Hypothesis Testing is important part of research, based on hypothesis testing we can check the truth of presumes hypothesis (Research Statement or Research Methodology )
Hypothesis Testing is important part of research, based on hypothesis testing we can check the truth of presumes hypothesis (Research Statement or Research Methodology )
Researchers use several tools and procedures for analyzing quantitative data obtained from different types of experimental designs. Different designs call for different methods of analysis. This presentation focuses on:
T-test
Analysis of variance (F-test), and
Chi-square test
Question1The Tri-City School District has instituted a zero-tol.docxmakdul
Question1:
The Tri-City School District has instituted a zero-tolerance policy for students carrying any objects that could be used as weapons. The following data give the number of students suspended during each of the past 12 weeks for violating this school policy.
Find the mean, median, and mode.
Round your answers to two decimal places, where appropriate.
Mean = Median = Mode =
Question 2:
Recall the following from section 3.1 of the text. Mean : The mean for ungrouped data is obtained by dividing the sum of all values by the number of values in the data set. Median: The median is the value of the middle term in a data set that has been ranked in increasing order. If there is an even number of data, find the average of the two middle data values. Mode: The mode is the value that occurs with the highest frequency in a data set. If there are more than one data values with the highest frequency in a data set, we will have multiple modes. If all data values have the same frequency of occurrences, then the data set has no mode.
26,32,27,23,34,33,29,43,23,28
(a) Arrange the data in increasing order:
(b) Calculate the mean. The mean =
Question 3:
The following data represent the 2011 guaranteed salaries (in thousands of dollars) of the head coaches of the final eight teams in the 2011 NCAA Men's Basketball Championship. The data represent the 2011 salaries of basketball coaches of the following universities, entered in that order: Arizona, Butler, Connecticut, Florida, Kansas, Kentucky, North Carolina, and Virginia Commonwealth. (Source: www.usatoday.com)
1950,434,2300,3575,3376,3800,1655,418
Compute the range, variance and standard deviation for these data.
Round your answers to the nearest integer, where appropriate.
Range = $
Variance =
Standard deviation = $
Question 4:
The 2011 gross sales of all firms in a large city have a mean of $3.6 million and a standard deviation of $0.7 million. Using Chebyshev′s theorem, find a lower bound on the percentage of firms in this city that had 2011 gross sales between $0.8 and $6.4 million.
Round the answer to the nearest percent.
The lower bound on the percentage is at least %
Questiono 5:
The 2011 gross sales of all firms in a large city have a mean of $2.4 million and a standard deviation of $ 0.6 million. Using Chebyshev's theorem, find at least what percentage of firms in this city had 2011 gross sales of $1.0 to $3.8 million. Round your answer to the nearest whole number.
%
Question 6:
The following data give the weights (in pounds) lost by 15 members of a health club at the end of two months after joining the club.
5 10 8 7 24 12 5 13 11 10 21 9 8 11 18
(a) Calculate the approximate value of the 82nd percentile, denoted P82.
P82 =
(b) Find the percentile rank of 11.
Give the answer rounded to the nearest percent.
The percentile rank of 11 =
Question 7:
In a group of households, the national news is watched on one of the following networks – ABC, CBS ...
This is my statistics exam I need help I have been lost this whole s.docxdivinapavey
This is my statistics exam I need help I have been lost this whole semester
Identify each of the following as examples of nominal, ordinal, interval, or ratio scales of measurement.
1.Identify each of the following as examples of nominal, ordinal, interval, or ratio scales of measurement.
1. A poll of registered voters in Florida asking which candidate they support
2. The length of time required for a wound to heal when using a new medicine
3. The number of telephone calls arriving at a switchboard per five-minute period
4. The distance first-year college football players can kick a ball
5. Mental health diagnoses present in an elderly population
6. The rankings of employees on their job performance
2) Two hundred raffle tickets are sold. Your friend has five people in her family who each bought two raffle tickets. What is the probability that someone from her family will win the raffle?
3) Jolie has 45 minutes to do her statistics homework. If the mean is 38 minutes and the standard deviation is 3, calculate Jolie's z score. Once calculated, interpret your findings in terms of Jolie's performance.
4) . A psychologist measures units of change for a memory test after students are given an opportunity to sleep only four hours. The following change units were obtained: 7, -12, 4, -7, 3, -10. Find the a) mean, b) median, c) mode, d) standard deviation, e) range, and f) variance.
5) A student scored 81 on a chemistry test and 75 on a history test. For the chemistry test, the mean was 70 and the standard deviation was 20. For the history test, the mean was 65 and the standard deviation was 8. Did the student do better on the chemistry test or the history test? Explain your answer
6. Suppose you want to figure out what to do with your degree in psychology. You ask some fellow students from your psychology program who recently graduated to find out what they are doing with their degree and how much it pays. What type of sampling is this? What are the limitations of this sampling approach?
7. Variables in which the values are categories are known as)
Interval variables
Nominal variables
Ordinal variables
Ratio variables
8. Before the researcher can conduct a statistical test, the research question must be translated into
A testable hypothesis
Additional observations
Mathematical symbols
Numbers
9. The hypothesis stating that there are no differences, effects, or relationships is)
The alternative hypothesis
The baseline hypothesis
The null hypothesis
The reasonable hypothesis
10. A group of students made the following scores on a 10-item quiz in psychological statistics: {5, 6, 7, 7, 7, 8, 8, 9, 9, 10, 10} What is the mean score?
6.6
7.2
7.8
8.7
11. A group of students made the following scores on a 10-item quiz in psychological statistics: {5, 6, 7, 7, 7, 8, 8, 9, 9, 10, 10} What is the median score?
6
7
8
9
12. A group of students made the following scores on a 10-item quiz in psychological statistics: {5, 6, 7, 7, 7, 8, 8, 9, 9, 10, 1.
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InstructionDue Date 6 pm on October 28 (Wed)Part IProbability a.docxdirkrplav
InstructionDue Date: 6 pm on October 28 (Wed)
Part IProbability and Sampling Distributions1.Thinking about probability statements. Probability is measure of how likely an event is to occur. Match one of probabilities that follow with each statement of likelihood given (The probability is usually a more exact measure of likelihood than is the verbal statement.)Answer0 0.01 0.3 0.6 0.99 1(a) This event is impossible. It can never occur.(b) This event is certain. It will occur on every trial.(c) This event is very unlikely, but it will occur once in a while in a long sequence of trials.(d) This event will occur more often that not.2. Spill or Spell? Spell-checking software catches "nonword errors" that result in a string of letters that is not a word, as when "the" is typed as "the." When undergraduates are asked to write a 250-word essay (without spell-checking), the number X of nonword errors has the following distribution:Value of X01234Probability0.10.20.30.30.1(a) Check that this distribution satisfies the two requirements for a legitimate assignment of probabilities to individual outcomes.(b) Write the event "at least one nonword error" in term of X (for example, P(X >3)). What is the probability of this event?(c) Describe the event X ≤ 2 in words. What is its probability? 3. Discrete or continuous? For each exercise listed below, decide whether the random variable described is discrete or continuous and explains the sample space.(a) Choose a student in your class at random. Ask how much time that student spent studying during the past 24 hours.(b) In a test of a new package design, you drop a carton of a dozen eggs from a height of 1 foot and count the number of broken eggs.(c) A nutrition researcher feeds a new diet to a young male white rat. The response variable is the weight (in grams) that the rat gains in 8 weeks.4. Tossing Coins(a) The distribution of the count X of heads in a single coin toss will be as follows. Find the mean number of heads and the variance for a single coin toss.Number of Heads (Xi)01mean:Probability (Pi)0.50.5variance:(b) The distribution of the count X of heads in four tosses of a balanced coin was as follows but some missing probabilities. Fill in the blanks and then find the mean number of heads and the variance for the distribution with assumption that the tosses are independent of each other.Number of Heads (Xi)01234mean:Probability (Pi)0.06250.0625variance:(c) Show that the two results of the means (i.e. single toss and four tosses) are related by the addition rule for means. (d) Show that the two results of the variances (i.e. single toss and four tosses) are related by the addition rule for variances (note: It was assumed that the tosses are independent of each other). 5. Generating a sampling distribution. Let's illustrate the idea of a sampling distribution in the case of a very small sample from a very small .
F ProjHOSPITAL INPATIENT P & L20162017Variance Variance Per DC 20.docxmecklenburgstrelitzh
F ProjHOSPITAL INPATIENT P & L20162017Variance Variance %Per DC 2016Per DC 2017Total Number of Beds149149Maximum Occupancy55,74554,561Total Patient Days37,25037,926Actual Occupancy %ALOSDischarges by PayerMedicare/Medicaid4,9224,989Commercial Ins5,2415,099Private Pay/Bad Debt1,2801,162Total DischargesREVENUEGross Patient Revenue$ 161,325,872$ 135,365,715Contract Allowances, Uncollectables$ (84,696,083)$ (65,680,261) Net Patient RevenueMisc Income$ 378,530$ 303,233 NET REVENUEPatient Care Expenses Salaries $ 18,387,223$ 18,244,610Benefits $ 4,140,146$ 4,211,157Contract Labor $ 1,724,507$ 1,820,377Physician Contract Services$ 6,439,165$ 6,335,188Lab Services $ 1,589,648$ 1,575,808Radiology Services$ 2,336,043$ 2,343,920Rehabilitation Services$ 655,766$ 679,444General Supplies $ 653,941$ 689,766Medical Supplies $ 1,006,220$ 1,029,151Cost of Food $ 576,245$ 612,890Patient Transportation $ 35,324$ 36,031Total Patient Care ExpensesGeneral and Administrative ExpensesSalaries$ 8,450,134$ 8,629,126Benefits$ 2,001,199$ 1,993,174Contract Labor$ 157,925$ 161,015Purchased Services $ 1,285,925$ 1,355,602Medical Director $ 162,909$ 167,207Telephone$ 586,985$ 596,466Meals & Entertainment $ 254,517$ 289,185Travel$ 126,951$ 141,561General Supplies $ 332,069$ 337,874Postage$ 53,760$ 57,383Building Expense$ 2,685,376$ 2,950,379Equipment Rents $ 363,302$ 429,694Repairs and Maintenance $ 337,711$ 366,311Insurance$ 644,384$ 715,563Utilities $ 504,959$ 556,226Total General and Administrative ExpensesNet Operating Expenses NET PROFIT (LOSS) before Interest, Taxes and Depreciation (EBITDA)NET PROFIT (LOSS) %2017CASH FLOW 2016RELEVANT FINANCIAL RATIOS 2016What is your average Daily Revenue?Return on Assets (ROA)Return on Assets (ROA)Assume your AR Days are 55, what is your Total AR?Return on Equity (ROE)Return on Equity (ROE)What is your Average Daily Expense?Current RatioCurrent RatioAssume your AP Days are 35, what is your total AP?Debt RatioDebt RatioBALANCE SHEET 2016ASSETS Cash and EquivalentsAssume 45 days of ExpensesAssume 45 days of Expenses Accounts Receivable$ - 0$ - 0 Inventory All SuppliesAssume 55 days of suppliesAssume 55 days of suppliesTotal Current AssetsFixed Assets:xxxxxxxxxxxxxxxxxxxxxxxxxxxx Bldg and Equipment$ 14,700,779$14,700,779Total AssetsLIABILITIES AND EQUITYCurrent Liabilitiesxxxxxxxxxxxxxxxxxxxxxxxxxxxx Accounts Payable$ - 0$0Long Term Debtxxxxxxxxxxxxxxxxxxxxxxxxxxxx Bldg and Equipment$ 8,149,152$8,149,152Total LiabilitiesEquityTotal Liabilities and EquityITEMSPOINT VALUEOccupany Calcs2Hospital Cols B & C3Variance (2014-2013) $ and %2PPD 2013 - 20142Cash flow 20142Balance Sheet Calculations5Relevant Financial Ratios4Sub-Total20
35879 Topic: Discussion6
Number of Pages: 1 (Double Spaced)
Number of sources: 1
Writing Style: APA
Type of document: Essay
Academic Level:Master
.
Identify each of the following as examples of nominal, ordinal, inte.docxscuttsginette
Identify each of the following as examples of nominal, ordinal, interval, or ratio scales of measurement. (4 points each)
A poll of registered voters in Florida asking which candidate they support
The length of time required for a wound to heal when using a new medicine
The number of telephone calls arriving at a switchboard per five-minute period
The distance first-year college football players can kick a ball
Mental health diagnoses present in an elderly population
The rankings of employees on their job performance
(Points : 24)
Question 2.
2.
Two hundred raffle tickets are sold. Your friend has five people in her family who each bought two raffle tickets. What is the probability that someone from her family will win the raffle?
(Points : 4)
Question 3.
3.
Jolie has 45 minutes to do her statistics homework. If the mean is 38 minutes and the standard deviation is 3, calculate Jolie's z score. Once calculated, interpret your findings in terms of Jolie's performance.
(
HINT:
use the normal distribution and the probability that other students performed better or worse.) (Points : 8)
Question 4.
4.
A psychologist measures units of change for a memory test after students are given an opportunity to sleep only four hours. The following change units were obtained: 7, -12, 4, -7, 3, -10. Find the a) mean, b) median, c) mode, d) standard deviation, e) range, and f) variance. (Points : 24)
Question 5.
5.
A student scored 81 on a chemistry test and 75 on a history test. For the chemistry test, the mean was 70 and the standard deviation was 20. For the history test, the mean was 65 and the standard deviation was 8. Did the student do better on the chemistry test or the history test? Explain your answer. (Points : 12)
Question 6.
6.
Suppose you want to figure out what to do with your degree in psychology. You ask some fellow students from your psychology program who recently graduated to find out what they are doing with their degree and how much it pays. What type of sampling is this? What are the limitations of this sampling approach? (Points : 8)
Question 7.
7.
Variables in which the values are categories are known as (Points : 4)
Interval variables
Nominal variables
Ordinal variables
Ratio variables
Question 8.
8.
Before the researcher can conduct a statistical test, the research question must be translated into (Points : 4)
A testable hypothesis
Additional observations
Mathematical symbols
Numbers
Question 9.
9.
The hypothesis stating that there are no differences, effects, or relationships is (Points : 4)
The alternative hypothesis
The baseline hypothesis
The null hypothesis
The reasonable hypothesis
Question 10.
10.
A group of students made the following scores on a 10-item quiz in psychological statistics: {5, 6, 7, 7, 7, 8, 8, 9, 9, 10, 10} What is the mean score? (Points : 4)
6.6.
PSY520 – Module 7Answer SheetSubmit your answers in the .docxwoodruffeloisa
PSY520 – Module 7
Answer Sheet
Submit your answers in the boxes provided. No credit will be given for responses not found in the correct answer area.
Chapter 19:
19.9Randomly selected records of 140 convicted criminals reveal that their crimes were committed on the following days of the week:
DAYS WHEN CRIMES WERE COMMITTED
FREQUENCY
MON.
TUE.
WED.
THU.
FRI.
SAT.
SUN.
TOTAL
Observed (ƒₒ)
17
21
22
18
23
24
15
140
Question:
Calculations or Logic:
Answer:
Using the .01 level of significance, test the null hypothesis that in the underlying population, crimes are equally likely to be committed on any day of the week.
Step 1
What is the research problem?
Step 2
What is the null hypothesis?
What is the alternative hypothesis?
Step 3
What are the degrees of freedom?
What is the decision rule?
Step 4
What is the critical X2?
What is the value of X2? (you will need to calculate this)
Step 5
What is the decision? (retain or reject the null hypothesis at the specified level of significance; note the relationship between the observed and critical X2 scores)
Step 6
What is your interpretation of the decision in relation to the original research problem?
Specify the p -value for this test result.
How might this result be reported in the literature?
19.10While playing a coin-tossing game in which you are to guess whether heads or tails will appear, you observe 30 heads in a string of 50 coin tosses.
Question:
Calculations or Logic:
Answer:
Test the null hypothesis that this coin is unbiased, that is, that heads and tails are equally likely to appear in the long run.
Step 1
What is the research problem?
Step 2
What is the null hypothesis?
What is the alternative hypothesis?
Step 3
What are the degrees of freedom?
What is the decision rule?
Step 4
What is the critical X2?
What is the value of X2? (you will need to calculate this)
Step 5
What is the decision? (retain or reject the null hypothesis at the specified level of significance; note the relationship between the observed and critical X2 scores)
Step 6
What is your interpretation of the decision in relation to the original research problem?
Specify the p -value for this test result.
19.13In 1912, over 800 passengers perished after the ocean liner Titanic collided with an iceberg and sank. The table below compares the survival frequencies of cabin and steerage passengers.
ACCOMMODATIONS ON THE TITANIC
SURVIVED
CABIN
STEERAGE
TOTAL
YES
299
186
485
NO
280
526
806
TOTAL
579
712
1291
Source: MacG. Dawson, R .J. (1995). The “unusual” episode data revisited. Journal of Statistical Education, 3, no. 3.
Question:
Calculations or Logic:
Answer:
Using the .05 level of significance, test the null hypothesis that survival rates are independent of the passengers’ accommodations (cabin or steerage).
Step 1
What is the research problem?
Step 2
What is the null hypothesis?
What is the alternative hypothesis?
Step 3
What are the degrees of freedom?
...
1. What type of research uses numeric measurement data (Points .docxpaynetawnya
1. What type of research uses numeric measurement data? (Points : 3)
2. What type of research uses a research hypothesis? (Points : 3)
3. What type of research does not use statistical data analysis? (Points : 3)
4. What type of research preempts all other types of research endeavors? (Points : 3)
5. Business research is a type of ________________ inquiry. (Points : 3)
6. What are the three main types of non-probability sampling used in business research? (Points : 3)
7. In a situation where in a confidence level .01 what percent of the measurement results are left to chance? (Points : 3)
8. What is the most important ingredient in a statistical testing procedure? (Points : 3)
9. If a production manager wanted to determine whether or not the first shift was processing more widgets than the second shift, what type of statistical process would be used? (Points : 3)
10. What type of t test seeks to determine whether or not a relationship exists in one sample over two conditions? _______________ (Points : 3)
11. Which of the examples below represent the Ratio level of scaling?
A) A high temperature of 83 degrees Fahrenheit
B) A survey result that 24 students work full time, 36, part time.
C) Bill is consistently rated most effective communicator of his group.
D) Gallup says that 60% of the voters support the incumbent.
E) Pick up three pounds of ground beef please.
F) Patty acts as expected based on her first-born family position.
G) Seattle at an altitude of 67 feet is higher than Death Valley at an altitude of – 120.
H) The door is 37 inches wide, the door frame is 36 inches wide.
(Points : 3)
B, C and F
D, E and G
C, F and H
A, E and H
12. Select those issues that only relate to selecting a specific statistical test. (Do not select items common to all tests or not applying to statistical tests.) (Points : 3)
The distribution (shape) of the population (e.g., normal, skewed, flat, etc.)
The measurement scale/nature of the data being evaluated (nominal, ordinal, interval or ratio)
The size of the population (assuming it is much larger than any samples)
The level of significance (_) you wish to place on the test results
Whether you have matched/related or unmatched/unrelated samples
The degrees of freedom (sample size) associated with your sample(s)
The statement of the null and research hypotheses
Whether the sample was stratified or not
13. Which of the following apply to Populations?
A) parameter
B) “Roman” letters, i.e.: x, s
C) A bounded, defined complete group (people, objects, etc.) having something in common to be described in its totality
D) “Greek” letters, i.e.: μ, σ
E) One or more subsets of a larger defined group, used to represent the larger group
F) 170 Republicans selected randomly from King County voter records
G) All Democrats in the state of Washington (totality)
(Points : 3)
A, B ...
1. What type of research uses numeric measurement data (Points .docxjackiewalcutt
1. What type of research uses numeric measurement data? (Points : 3)
2. What type of research uses a research hypothesis? (Points : 3)
3. What type of research does not use statistical data analysis? (Points : 3)
4. What type of research preempts all other types of research endeavors? (Points : 3)
5. Business research is a type of ________________ inquiry. (Points : 3)
6. What are the three main types of non-probability sampling used in business research? (Points : 3)
7. In a situation where in a confidence level .01 what percent of the measurement results are left to chance? (Points : 3)
8. What is the most important ingredient in a statistical testing procedure? (Points : 3)
9. If a production manager wanted to determine whether or not the first shift was processing more widgets than the second shift, what type of statistical process would be used? (Points : 3)
10. What type of t test seeks to determine whether or not a relationship exists in one sample over two conditions? _______________ (Points : 3)
11.
Which of the examples below represent the Ratio level of scaling?
A) A high temperature of 83 degrees Fahrenheit
B) A survey result that 24 students work full time, 36, part time.
C) Bill is consistently rated most effective communicator of his group.
D) Gallup says that 60% of the voters support the incumbent.
E) Pick up three pounds of ground beef please.
F) Patty acts as expected based on her first-born family position.
G) Seattle at an altitude of 67 feet is higher than Death Valley at an altitude of – 120.
H) The door is 37 inches wide, the door frame is 36 inches wide.
(Points : 3)
B, C and F
D, E and G
C, F and H
A, E and H
12. Select those issues that only relate to selecting a specific statistical test. (Do not select items common to all tests or not applying to statistical tests.) (Points : 3)
The distribution (shape) of the population (e.g., normal, skewed, flat, etc.)
The measurement scale/nature of the data being evaluated (nominal, ordinal, interval or ratio)
The size of the population (assuming it is much larger than any samples)
The level of significance (_) you wish to place on the test results
Whether you have matched/related or unmatched/unrelated samples
The degrees of freedom (sample size) associated with your sample(s)
The statement of the null and research hypotheses
Whether the sample was stratified or not
13.
Which of the following apply to Populations?
A) parameter
B) “Roman” letters, i.e.: x, s
C) A bounded, defined complete group (people, objects, etc.) having something in common to be described in its totality
D) “Greek” letters, i.e.: μ, σ
E) One or more subsets of a larger defined group, used to represent the larger group
F) 170 Republicans selected randomly from King County voter records
G) All Democrats in the state of Washington (totality)
(Points : 3)
A, B, ...
QNT Weekly learning assessments - Questions and Answers | UOP E AssignmentsUOP E Assignments
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Math 221 Massive Success / snaptutorial.comStephenson164
1. (TCO 1) An Input Area (as it applies to Excel 2010) is defined as______.
2. (TCO 1) In Excel 2010, a sheet tab ________.
3. (TCO 1) Which of the following best describes the AutoComplete function?
4. (TCO 1) Which of the following best describes the order of precedence as it applies to math operations in Excel?
This is a presentation by Dada Robert in a Your Skill Boost masterclass organised by the Excellence Foundation for South Sudan (EFSS) on Saturday, the 25th and Sunday, the 26th of May 2024.
He discussed the concept of quality improvement, emphasizing its applicability to various aspects of life, including personal, project, and program improvements. He defined quality as doing the right thing at the right time in the right way to achieve the best possible results and discussed the concept of the "gap" between what we know and what we do, and how this gap represents the areas we need to improve. He explained the scientific approach to quality improvement, which involves systematic performance analysis, testing and learning, and implementing change ideas. He also highlighted the importance of client focus and a team approach to quality improvement.
We all have good and bad thoughts from time to time and situation to situation. We are bombarded daily with spiraling thoughts(both negative and positive) creating all-consuming feel , making us difficult to manage with associated suffering. Good thoughts are like our Mob Signal (Positive thought) amidst noise(negative thought) in the atmosphere. Negative thoughts like noise outweigh positive thoughts. These thoughts often create unwanted confusion, trouble, stress and frustration in our mind as well as chaos in our physical world. Negative thoughts are also known as “distorted thinking”.
Operation “Blue Star” is the only event in the history of Independent India where the state went into war with its own people. Even after about 40 years it is not clear if it was culmination of states anger over people of the region, a political game of power or start of dictatorial chapter in the democratic setup.
The people of Punjab felt alienated from main stream due to denial of their just demands during a long democratic struggle since independence. As it happen all over the word, it led to militant struggle with great loss of lives of military, police and civilian personnel. Killing of Indira Gandhi and massacre of innocent Sikhs in Delhi and other India cities was also associated with this movement.
Palestine last event orientationfvgnh .pptxRaedMohamed3
An EFL lesson about the current events in Palestine. It is intended to be for intermediate students who wish to increase their listening skills through a short lesson in power point.
Synthetic Fiber Construction in lab .pptxPavel ( NSTU)
Synthetic fiber production is a fascinating and complex field that blends chemistry, engineering, and environmental science. By understanding these aspects, students can gain a comprehensive view of synthetic fiber production, its impact on society and the environment, and the potential for future innovations. Synthetic fibers play a crucial role in modern society, impacting various aspects of daily life, industry, and the environment. ynthetic fibers are integral to modern life, offering a range of benefits from cost-effectiveness and versatility to innovative applications and performance characteristics. While they pose environmental challenges, ongoing research and development aim to create more sustainable and eco-friendly alternatives. Understanding the importance of synthetic fibers helps in appreciating their role in the economy, industry, and daily life, while also emphasizing the need for sustainable practices and innovation.
Model Attribute Check Company Auto PropertyCeline George
In Odoo, the multi-company feature allows you to manage multiple companies within a single Odoo database instance. Each company can have its own configurations while still sharing common resources such as products, customers, and suppliers.
The Roman Empire A Historical Colossus.pdfkaushalkr1407
The Roman Empire, a vast and enduring power, stands as one of history's most remarkable civilizations, leaving an indelible imprint on the world. It emerged from the Roman Republic, transitioning into an imperial powerhouse under the leadership of Augustus Caesar in 27 BCE. This transformation marked the beginning of an era defined by unprecedented territorial expansion, architectural marvels, and profound cultural influence.
The empire's roots lie in the city of Rome, founded, according to legend, by Romulus in 753 BCE. Over centuries, Rome evolved from a small settlement to a formidable republic, characterized by a complex political system with elected officials and checks on power. However, internal strife, class conflicts, and military ambitions paved the way for the end of the Republic. Julius Caesar’s dictatorship and subsequent assassination in 44 BCE created a power vacuum, leading to a civil war. Octavian, later Augustus, emerged victorious, heralding the Roman Empire’s birth.
Under Augustus, the empire experienced the Pax Romana, a 200-year period of relative peace and stability. Augustus reformed the military, established efficient administrative systems, and initiated grand construction projects. The empire's borders expanded, encompassing territories from Britain to Egypt and from Spain to the Euphrates. Roman legions, renowned for their discipline and engineering prowess, secured and maintained these vast territories, building roads, fortifications, and cities that facilitated control and integration.
The Roman Empire’s society was hierarchical, with a rigid class system. At the top were the patricians, wealthy elites who held significant political power. Below them were the plebeians, free citizens with limited political influence, and the vast numbers of slaves who formed the backbone of the economy. The family unit was central, governed by the paterfamilias, the male head who held absolute authority.
Culturally, the Romans were eclectic, absorbing and adapting elements from the civilizations they encountered, particularly the Greeks. Roman art, literature, and philosophy reflected this synthesis, creating a rich cultural tapestry. Latin, the Roman language, became the lingua franca of the Western world, influencing numerous modern languages.
Roman architecture and engineering achievements were monumental. They perfected the arch, vault, and dome, constructing enduring structures like the Colosseum, Pantheon, and aqueducts. These engineering marvels not only showcased Roman ingenuity but also served practical purposes, from public entertainment to water supply.
2024.06.01 Introducing a competency framework for languag learning materials ...Sandy Millin
http://sandymillin.wordpress.com/iateflwebinar2024
Published classroom materials form the basis of syllabuses, drive teacher professional development, and have a potentially huge influence on learners, teachers and education systems. All teachers also create their own materials, whether a few sentences on a blackboard, a highly-structured fully-realised online course, or anything in between. Despite this, the knowledge and skills needed to create effective language learning materials are rarely part of teacher training, and are mostly learnt by trial and error.
Knowledge and skills frameworks, generally called competency frameworks, for ELT teachers, trainers and managers have existed for a few years now. However, until I created one for my MA dissertation, there wasn’t one drawing together what we need to know and do to be able to effectively produce language learning materials.
This webinar will introduce you to my framework, highlighting the key competencies I identified from my research. It will also show how anybody involved in language teaching (any language, not just English!), teacher training, managing schools or developing language learning materials can benefit from using the framework.
3. Performing the calculation You would use chi-squared if you were investigating difference between what you actually observed (by collecting primary or secondary data) and what you might normally expect to find. Here is an example from a piece of human geography research into urban development relating to the 2012 Olympics site. First, look at the chi-squared formula: o = the observed frequencies e = the expected frequencies Σ = the ‘sum of’
4. Case Study: Using chi-squared to analyse questionnaire responses A student collected data on local people’s viewpoints about the building of the 2012 Olympic venue in Stratford, east London. She was interested in seeing if viewpoints changed according to the perspectives of different groups. Method She decided to collect 20 responses from each category of local person. After this, she discontinued the data collection. She know nothing about the local population’s demographic characteristics and did not try to reflect this in her study. Her questionnaire was a survey of viewpoints about the usefulness of the new Olympic developments for different groups (categories) of locals. This is the statement she posed: ‘ The 2012 Olympic Games development will be of benefit to the whole community of Stratford, east London.’ 1 2 3 4 Strongly agree Agree Disagree Strongly disagree
5. She wanted to find out if the type of local person influenced feelings about how useful the developments would be. She was particularly interested in those who felt negatively about the Olympic developments (disagreed or strongly disagreed) Here are the results of the survey. The residents had to choose which category best suited their own characteristics. Some of those questioned could have fitted into more than one category. For example, a business owner may also be a local resident. In this case the person questioned was disregarded from the study. Remember that 20 people responded from each category and she only recorded the frequency of negative response, i.e. those who either disagreed or strongly disagreed with the statement/ Category (type) Frequency of negative responses (Observed values: o) Business owner 4 School student 6 Adult male resident 14 Adult female resident 10 Senior citizen 16
6. The student added up the number of times a negative response to the question above was given. You can see that the categories seem to show large differences of opinion between the groups. A glance at the results suggests that different groups have responded very differently to the questionnaire. The chi-squared calculation helps us decide if there is a statistically significant difference between the groups. You can then use the critical values to assess the likelihood of the results being a chance or fluke set of figures The first task is to generate a null hypothesis (H ₒ): ‘ There is no significant difference between the category of local person and the frequency of negative response.’ Now lets test this null hypothesis (H ₒ). It is much easier to start the calculation with a table.
7. In this example, the expected data (e) is simply taken as being the mean negative frequency of response. It is calculated by adding up all of the observed data (o) and then dividing by the number of categories, i.e. 5. This gives an expected frequency of 10 for each category. Business owner School student Adult male resident Adult female resident Senior citizen Total o 4 6 14 10 16 50 e 10 10 10 10 10 50 o - e -6 -------- (o – e)² 36 -------- (o – e)² e 3.6 -------- x² 3.6
8. In this example, the expected data (e) is simply taken as being the mean negative frequency of response. It is calculated by adding up all of the observed data (o) and then dividing by the number of categories, i.e. 5. This gives an expected frequency of 10 for each category. Business owner School student Adult male resident Adult female resident Senior citizen Total o 4 6 14 10 16 50 e 10 10 10 10 10 50 o - e -6 -4 4 0 6 -------- (o – e)² 36 16 16 0 36 -------- (o – e)² e 3.6 1.6 1.6 0 3.6 -------- x² 3.6 1.6 1.6 0 3.6 10.4
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11. Interpreting the results The value of x² = 10.4 Using degrees of freedom and significance levels we can decide whether we are able to reject the null hypothesis (H ₒ) of: There is no significant difference between the category of local person and the frequency of negative response.’ For this study, the degrees of freedom is calculated as n - 1, where n is the number of categories in the sample. As were 5 categories, there are 4 degrees of freedom In order to reject the null hypothesis (H ₒ) , our chi-squared score must be greater than the critical value at the 0.05 level of significance. Our value of 10.4 is higher than the 0.05 level of significance value of 9.49, therefore we can reject the null hypothesis (H ₒ). Confidence level 0.10 90% 0.05 95% 0.01 99% 0.005 99.5% Critical value 7.78 9.49 13.28 14.86
12. Further applications of chi-square Use the tables on the following three slides to practice your working of the chi-squared (x²) Tables taken from chi-squared presentation produced by GeoBlogs on slideshare. http://www.slideshare.net/GeoBlogs/chi-squared
13. The number of buses observed per minute in relation to the distance from the city centre. Distance (km) No. of buses per min (O) Expected frequency (E) (O-E) (O-E) 2 (O-E) 2 /E 0 10 1 5 2 3 3 2 Σ
14. The relationship between the size of pebbles in a river in relation to the distance from its source. Distance from source (km) Average Diameter of pebbles (mm) (O) Expected frequency (E) (O-E) (O-E) 2 (O-E) 2 /E 0 100 1 60 2 20 3 20 Total
15. The number of cars observed in relation to the distance from my house. Distance from house (km) Number of cars seen (O) Expected frequency (E) (O-E) (O-E) 2 (O-E) 2 /E 0 52 1 53 2 51 3 44 Total