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PSY 315 Week 3 Inferential Research and Statistics Project Part 1 PSY
315 Week 4 Inferential Research and Statistics Project Part 2 PSY 315
Week 5 Inferential Research and Statistics Project Part 3 Presentation
PSY 315 Week 3 Practice Problem Worksheet (Version 7) PSY 315
Week 4 Practice Problem Worksheet (Version 7) PSY 315 Week 1
Practice Problem Worksheet (Version 7) PSY 315 Week 3 Inferential
Research and Statistics Project Part 1 (PTSD) PSY 315 Week 4
Inferential Research and Statistics Project Part 2 (PTSD) PSY 315 Week
5 Inferential Research and Statistics Project Part 3 Presentation (PTSD)
PSY 315 Week 2 Practice Worksheet (New, 2018) PSY 315 Week 3
Practice Worksheet (New, 2018) PSY 315 Week 1 Discussion Question
1 PSY 315 Week 1 Discussion Question 2 PSY 315 week 1 Individual
Assignment Research, Statistics, and Psychology Paper PSY 315 Week
1 Practice Problems Worksheet PSY 315 Week 2 Discussion Question 1
PSY 315 Week 2 Discussion Question 2 PSY 315 Week 2 Practice
Problems Worksheet PSY 315 week 2 Individual Assignment Ch 1
Practice Problems 12 15 19 20 21 and 22 PSY 315 week 2 Learning
team assignment Descriptive and Inferential Statistics Paper andTeam
Charter PSY 315 week 2 Learning team assignment Descriptive and
Inferential Statistics Presentation (New) PSY 315 Week 3 Discussion
Question 1 PSY 315 Week 3 Discussion Question 2 PSY 315 Week 3
Practice Problems Worksheet PSY 315 Week 3 Team Assignment
Hypothesis Testing Lesson Presentation PSY 315 week 3 individual

assignment Chapter 2 Practice Problems 11 12 13 16 21 and Chapter 3
Practice Problems 14 15 22 25 PSY 315 Week 4 Discussion Question 1
PSY 315 Week 4 Discussion Question 2 PSY 315 Week 4 Practice
Problems Worksheet PSY 315 week 4 individual assignment Chapter 4
Practice Problems 13 16 and 20 PSY 315 week 4 Learning team
assignment Hypothesis Testing Paper on Psycological reason for
Depression PSY 315 Week 4 Team Assignment Research Data Critique
PSY 315 Week 5 Discussion Question 1 PSY 315 Week 5 Discussion
Question 2 PSY 315 week 5 Individual Assignment Ch 7 Practice
Problem 14, Ch 8 Practice Problem 18, Ch 9 Practice Problem 17 Ch 11
Practice Problems 11,12 PSY 315 Week 5 Individual Assignment
Hypothesis Testing Paper PSY 315 Week 5 Practice Problem
Worksheet (NEW)
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PSY 315 Week 1 Discussion Question 1
What are the differences between quantitative and qualitative data?
What are some examples of each?
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What are descriptive statistics, and how might you use descriptive
statistics in your personal life?
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PSY 315 Week 1 Individual Assignment Research, Statistics, and
Psychology Paper
1. Individual Assignment: Research, Statistics, and Psychology
Paper
Resources: Assigned readings, ERRs, the Internet, and other sources
Prepare a 700- to 1,050-word paper in which you examine the role of
research and statistics in the field of psychology.
Address the following items thoroughly:
o Define research and the scientific method (include an
explanation of all five steps).
o Compare and contrast the characteristics of primary
and secondary data.
o Explain the role of statistics in research. (Keep the
focus within the field of psychology).
Format your paper according to APA standards.
Complete the Certificate of Originality Report and submit to the
Assignments link as an attachment along with this assignment.
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PSY 315 Week 1 Practice Problem Worksheet (Version 7)

Provide a response to the following questions. Written responses
should be at least 30 to 45 words each. 1. Explain and provide an
example for each of the following types of variables: a. Nominal: b.
Ordinal: c. Interval: d. Ratio scale: e. Continuous: f. Discrete: g.
Quantitative: h. Qualitative: 2. The following are the speeds of 40 cars
clocked by radar on a particular road in a 35 miles-per-hour zone on
an afternoon: 30, 36, 42, 36, 30, 52, 36, 34, 36, 33, 30, 32, 35, 32, 37,
34, 36, 31, 35, 20 24, 46, 23, 31, 32, 45, 34, 37, 28, 40, 34, 38, 40, 52,
31, 33, 15, 27, 36, 40 Create a frequency table and a histogram. Then,
describe the general shape of the distribution. 3. Raskauskas and
Stoltz (2007) asked a group of 84 adolescents about their involvement
in traditional and electronic bullying. The researchers defined
electronic bullying as “…a means of bullying in which peers use
electronics (such as text messages, emails, and defaming Web sites) to
taunt, threaten, harass, and/or intimidate a peer” (p. 565). The table
below is a frequency table showing the adolescents’ reported incidence
of being victims or perpetrators of traditional and electronic bullying.
a. Using the table below as an example, explain the idea of a frequency
table to a person who has never taken a course in statistics. b. Explain
the general meaning of the pattern of results. 4. Describe whether each
of the following data words best describes descriptive statistics or
inferential statistics. Explain your reasoning. a. Describe: b. Infer: c.
Summarize: 5. Compare the three types of research methods and
statistics. 6. Regarding gun ownership in the United States, data from
Gallup polls over a 40-year period show how gun ownership in the
United States has changed. The results are described below, with the
percentage of Americans who own guns given in each of the 5

decades. a. Are the percentages reported above an example of
descriptive statistics or inferential statistics? Why? b. Based on the
table, how would you describe the changes in gun ownership in the
United States over the 40 years shown? 7. Refer to the Simpson-
Southward et al. (2016) article from this week’s electronic readings.
Was this an example of inferential statistics and research or
descriptive statistics and research? Justify your response.
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The median home price in your area has increased in the last 10 years,
how does this differ from the mean home price in your area? How
does this illustrate what the mean and median are?
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How effective are the pie charts that often accompany a newspaper
article in explaining the statistics being used in the article? Can you
find an example of a pie chart?
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PSY 315 Week 2 Learning team assignment Descriptive and
Inferential Statistics Paper andTeam Charter

1. Learning Team Assignment:Descriptive and Inferential Statistics
Paper & Team Charter: see Rubric in the Course MaterialsForum,
Also post the team charter to the Assignments section with the
completed assignment.
Prepare a 700- to 1,050-word paper in which you examine the
differences between descriptive and inferential statistics.
Address the following items:
o Describe the functions of statistics.
o Define descriptive and inferential statistics.
o Provideat least one example of the relationship between
descriptive and inferential statistics.
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PSY 315 Week 2 Learning team assignment Descriptive and
Inferential Statistics Presentation (New)
Resource: Assigned journal article
Create a 7- to 10-slide presentation with speaker notes examining the
differences between descriptive and inferential statistics used in the
journal article you were assigned.
Address the following items as they apply to the article:

 Describe the functions of statistics.
 Define descriptive and inferential statistics.Provide at least one
example of the relationship between descriptive and inferential
statistics.
Format your presentation consistent with APA guidelines.
Click the Assignment Files tab to submit your assignment.
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PSY 315 Week 2 Practice Worksheet (New, 2019)
Week 2 Practice Worksheet Provide a response to the following
prompts. 1. The Wilcox &Keselman (2003) article from this week’s
electronic readings discusses two problems with measures of central
tendency: skewness of the data and outliers. Discuss each of these
issues and how they affect measures of central tendency. 2. How
do the sample mean and the population mean differ? What is the
symbol for each type of mean? 3. An expert reviews a sample of
10 scientific articles (n = 10) and records the following numbers of
error in each article: 0, 4, 2, 8, 2, 3, 1, 0, 5, and 7. 1. Compute the
mean, median, mode, sum of squares (SS), the variance, and the
standard deviation for this sample using the definitional and
computational formulas. You may use Microsoft® Excel® data anlysis
to compute these statistics and copy your output into this worksheet.
Explain, to a person who has never had a course in statistics what you

have done. 1. Note the ways in which the means and standard
deviations differ, and speculate on the possible meaning of these
differences, presuming they are representative of U.S. governors and
large corporations’ CEOs in general. 4. A researcher records the
levels of attraction for various fashion models among college
students. He finds that mean levels of attraction are much higher than
the median and the mode for these data. 5. What is the shape of
the distribution for the data in this study? 1. What measure of
central tendency is most appropriate for describing these data? Why?
5. On a standard measure of hearing ability, the mean is 300, and
the standard deviation is 20. Provide the Z scores for persons whose
raw scores are 340, 310, and 260. Provide the raw scores for persons
whose Z scores on this test are 2.4, 1.5, and -4.5. 6. Using the unit
normal table, find the proportion under the standard normal curve
that lies in the tail for each of the follow useing table starting on page
673 (Hint: Remember to change all percents to decimals): 1. Z =
1.00 2. Z = -1.05 3. Z = 0 4. Z = 2.80 5. Z = 1.96 7. Suppose
the scores of architects on a particular creativity test are normally
distributed. Using a normal curve table (pp. 673-676 of the text), what
percentage of architects have Z scores 8. above .10? 9. below
.10? 10. above .20? 11. below .20? 12. above 1.10? 13. below
1.10? 8. A statistics instructor wants to measure the effectiveness
of his teaching skills in a class of 102 students (N = 102). He selects
students by waiting at the door to the classroom prior to his lecture
and pulling aside every third student to give him or her a
questionnaire. 1. Is this sample design an example of random
sampling? Explain. Assuming that all students attend his class that
day, how many students will the instructor select to complete his

questionnaire? 9. Suppose you were going to conduct a survey of
visitors to your campus. You want the survey to be as representative
as possible. 1. How would you select the people to survey? 1. Why
would that be your best method? 10. In a school band, 9 kids play
string instruments, 10 kids play woodwind instruments, 7 kids play
brass instruments, and 4 kids play percussion instruments. 1.
What is the probability that you randomly select a kid who plays
a string or percussion instrument? 1. What is the probability that you
randomly select a kid who does not play a brass instrument?
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What are some terms related to hypothesis testing with which you are
already familiar? What are the five steps of hypothesis testing? Why do
the null and alternative hypotheses have to be mutually exclusive? -----
----------------------------------------------------------------------------------
What is the difference between null and alternative hypotheses
statements in one-tailed and two-tailed tests? What are
significance/alpha levels and how does using a one versus a two tailed
test affect significance levels?
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PSY 315 Week 3 Inferential Research and Statistics Project Part 1

Select one of the following scenarios based on your particular field of
interest in psychology: • Industrial/Organizational Psychology: o A
few months ago, the upper management at a large corporation
decided they wanted to make major changes in the organization.
Leadership is concerned that employees may be resistant to the
change, and they want to find out if there is a change management
method that would help employees accept change more effectively
and keep employee satisfaction high. Two methods they have
considered are the ADKAR Framework and the Prosci Change
Management Methodology. The company wants to implement a
small change in two departments before they make any major
organization changes and would like to test the methods. The
corporation uses the Devine Company to measure employee
satisfaction with an anonymous survey. • Applied Psychology: o A
large medical facility is experiencing too many missed appointments
in its primary and specialty care clinics. The facility has noticed that
not all patients respond well to reminder calls regarding follow-up
appointments. Some patients do not answer calls and do not seem to
respond to voice mail requesting they call the facility. The result is
that many follow up appointments are missed. Management has read
articles that people respond very well to text messages and would like
to see which method provides the least amount of missed
appointments. Missed appointments are tracked in the facility
database on a monthly basis. • General Psychology: o Clinicians at a
small clinic have been introduced to a new method to treat post-
traumatic stress disorder (PTSD) in their clients for veterans. Research

indicates that virtual reality (VR) is a highly effective treatment option
for patients with PTSD. Currently, the clinic uses only cognitive
processing therapy (CPT) with their patients suffering from PTSD. The
clinicians would like to find out whether VR therapy has different
results from CPT therapy. The measure used by the clinic to measure
PTSD symptoms is the Combat Exposure Scale. Both therapies need to
be applied for a minimum of 12 weeks to be effective. Write a 525- to
750-word paper that addresses the following for your chosen
scenario: • Clearly define the problem or issue you are addressing.
Provide a brief background of any research you have found that might
affect your research hypothesis. • Create a research hypothesis based
on the information provided in each scenario. You will be given a data
set with two sets of interval data (just the numbers, as you must
decide what they represent, such as method A results or method B
results). This means you are going to test one thing against another,
such as which method works best (step 1 of the steps to hypothesis
testing). State the null and research hypotheses. Explain whether
these hypotheses require a one-tailed test or two-tailed test, and
explain your rationale. • Describe the sample you will use. Sample size
will be 30 for each group, which will be provided in your data set.
Explain what type of sampling you selected. You may create your own
data set if you want, as it is only hypothetical—you do not need to
collect any data. • Do you think you would also collect some
descriptive data, such as gender, age, or shift? Why do you think it
makes sense to collect descriptive data? Format your paper according
to APA guidelines. Example You have a hypothesis that two drugs
have different effects on lowering anxiety. You would have anxiety
scores for drug A and anxiety scores for drug B (all after 4 weeks of

treatment) to run inferential analysis after 4 weeks. • Null hypothesis
is H0: drug A = drug B • Research hypothesis is H1: drug A ≠ drug B •
Dependent variable: Anxiety score changed after treatment. •
Independent variable: drug treatment Because you did not state a
direction in your hypotheses (better than or worse than), this will be a
two-tailed test. You are looking for differences in either direction. You
would set your alpha level of .05 and have a sample for each group of
30 people that were volunteers for the study.
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1. On a standard measure of hearing ability, the mean is 300, and
the standard deviation is 20. Provide the Z scores for persons
whose raw scores are 340, 310, and 260. Provide the raw scores
for persons whose Z scores on this test are 2.4, 1.5, and -4.5. 2.
Using the unit normal table, find the proportion under the
standard normal curve that lies to the right of each of the
following: a. z = 1.00 b. z = -1.05 c. z = 0 d. z = 2.80 e. z = 1.96 3.
Suppose the scores of architects on a particular creativity test are
normally distributed. Using a normal curve table (pp. 477–480 of
the text), what percentage of architects have Z scores a. Above
.10? b. Below .10? c. Above .20? d. Below .20? e. Above 1.10? f.
Below 1.10? g. Above -.10? h. Below -.10? 4. A statistics
instructor wants to measure the effectiveness of his teaching
skills in a class of 102 students (N = 102). He selects students by
waiting at the door to the classroom prior to his lecture and

pulling aside every third student to give him or her a
questionnaire. a. Is this sample design an example of random
sampling? Explain. b. Assuming that all students attend his class
that day, how many students will the instructor select to complete
his questionnaire? 5. Suppose you were going to conduct a
survey of visitors to your campus. You want the survey to be as
representative as possible. a. How would you select the people to
survey? b. Why would that be your best method?
2. ---------------------------------------------------------------------------------
------
3.
PSY 315 Week 3 Practice Worksheet (New, 2019)
Week 3 Practice Worksheet Provide a response to the following
prompts. Note: Each team member should compute the following
questions and submit them to the Learning Team forum. The team
should then discuss each team member’s answers to ascertain the
correct answer for each question. Once your team has answered all
the questions, submit a finalized team worksheet. 1. When a result is
not extreme enough to reject the null hypothesis, explain why it is
wrong to conclude that your result supports the null hypothesis. 2.
List the five steps of hypothesis testing and explain the
procedure and logic of each. 3. A researcher wants to know whether
people who regularly listen to radio talk shows are more or less likely
to vote in national elections than people in general. 1.State the

research hypothesis and null hypothesis 1. Would the researchers use
a one- or two-tailed Z test? 4. The general population (Population
2) has a mean of 30 and a standard deviation of 5, and the cutoff Z
score for significance in a study involving one participant is 1.96. If the
raw score obtained by the participant is 45, what decisions should be
made about the null and research hypotheses? 5. One hundred
people are included in a study in which they are compared to a known
population that has a mean of 73, a standard deviation of 20, and a
rectangular distribution. 1.μM = __________. 2. σM = __________. 3.
The shape of the comparison distribution is __________. 4. If the
sample mean is 75, the lower limit for the 99% confidence interval is
__________. 5. If the sample mean is 75, the upper limit for the 99%
confidence interval is __________. 6. If the sample mean is 75, the
lower limit for the 95% confidence interval is __________. 7. If the
sample mean is 75, the upper limit for the 95% confidence interval is
__________. 6. A psychology professor of a large class became
curious as to whether the students who turned in tests first scored
differently from the overall mean on the test. The overall mean score
on the test was 75 with a standard deviation of 10; the scores were
approximately normally distributed. The mean score for the first 20
students to turn in tests was 78. Using the .05 significance level, was
the average test score earned by the first 20 students to turn in their
tests significantly different from the overall mean? 1. Use the five
steps of hypothesis testing. 1. Figure the confidence limits for the
95% confidence interval.
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PSY 315 Week 3 Team Assignment Hypothesis Testing Lesson
Presentation

Prepare a 7- to 10-slide Microsoft PowerPoint Presentation with
speaker notes, as a lesson to explain the null and alternative
hypothesis and how to use a z-test to test the null hypothesis.
Provide an example to illustrate your lesson.
Include a minimum of 1-2 peer-reviewed resources as references.
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What is a t-Test? How is the t-Test different from what we learned last
week? What is the normal distribution and how does it relate to the t-
test? What is an example of a situation in which you would use a t Test
for dependent means?
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What is the theory underlying the ANOVA? Why is it important?
What are the differences between a two sample t-test and ANOVA
hypothesis testing? What is an example of a research idea that would
need to be analyzed using an ANOVA?
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Analyze the data from Part 1 using Microsoft® Excel® software. Write
a 700- to 875-word paper that includes the following information: •
Describe what method you are using to compare groups. • Copy and
paste the output into a Microsoft® Word document, and also answer
the following questions: o What is the significance level of the
comparison? o What was the alpha level you identified in Week 3? o
What was the means and variance for each variable? o What was the
test statistic? o What was the critical value for both the one- and two-
tailed test? o Was your test one-tailed or two-tailed? o Were you able
to reject the null hypothesis? In other words, did you prove there was
a difference? • Talk about what these results mean in everyday
language and in context to your chosen scenario. • Make a
recommendation based on the findings. Format your paper according
to APA guidelines. Example of Output You Would Use to Answer These
Questions
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PSY 315 Week 4 Learning team assignment Hypothesis Testing Paper
on Psycological reason for Depression
1. Learning Team Assignment: Hypothesis Testing Paper

Select a research issue, problem, or opportunity in the field of
psychology.
Obtain instructor approval for your research issue, problem, or
opportunity before completing your Hypothesis Testing Paper.
Prepare a 1,050- to 1,750-word paper in which you formulate a
hypothesis based on your selected research issue, problem, or
opportunity. See the rubric in the Course Materials forum.
Address the following:
o Describe your selected research issue, problem, or
opportunity.
o Formulate both a numerical and verbal hypothesis
statement concerning your selected research issue, problem,
or opportunity.
o Explainhow the five steps of hypothesis testing were
carried out for analyzing your data, and how the five steps
of hypothesis testing may be used to evaluate other
solutions for your selected research issue, problem, or
opportunity.
2. Learning Team Assignment: Hypothesis Testing Presentation
Resources: Assigned readings, ERRs, the Internet, and
other sources

Prepare a 10- to 15-slides (not including the title and
reference slides) Microsoft®
PowerPoint®
presentation with
presenter notes illustrating your Hypothesis Testing Paper.
(Remember the title and references slides do not count
towards the needed total slide count). Follow the rubric
provided in the Course Materials forum.
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1. Two boats, the Prada (Italy) and the Oracle (USA), are
competing for a spot in the upcoming America’s Cup race. They
race over a part of the course several times. The sample times in
minutes for the Prada were as follows: 12.9, 12.5, 11.0, 13.3,
11.2, 11.4, 11.6, 12.3, 14.2, and 11.3. The sample times in
minutes for the Oracle were as follows: 14.1, 14.1, 14.2, 17.4,
15.8, 16.7, 16.1, 13.3, 13.4, 13.6, 10.8, and 19.0. For data
analysis, the appropriate test is the t test: two-sample assuming
unequal variances. The next table shows the results of this
independent t test. At the .05 significance level, can you conclude
that there is a difference in their mean times? Explain these
results to a person who knows about the t test for a single sample
but who is unfamiliar with the t test for independent means. 2.
The Willow Run Outlet Mall has two Haggar Outlet Stores, one
located on Peach Street and the other on Plum Street. The two
stores are laid out differently, but both store managers claim
their layout maximizes the amounts customers will purchase on
impulse. A sample of 10 customers at the Peach Street store

revealed they spent the following amounts more than planned:
$17.58, $19.73, $12.61, $17.79, $16.22, $15.82, $15.40, $15.86,
$11.82, $15.85. A sample of 14 customers at the Plum Street store
revealed they spent the following amounts more than they
planned when they entered the store: $18.19, $20.22, $17.38,
$17.96, $23.92, $15.87, $16.47, $15.96, $16.79, $16.74, $21.40,
$20.57, $19.79, $14.83. For data analysis, a t test: two-sample
assuming unequal variances was used. At the .01 significance
level, is there a difference in the mean amount purchased on an
impulse at the two stores? Explain these results to a person who
knows about the t test for a single sample but who is unfamiliar
with the t test for independent means. 3. Fry Brothers Heating
and Air Conditioning, Inc. employs Larry Clark and George
Murnen to make service calls to repair furnaces and air
conditioning units in homes. Tom Fry, the owner, would like to
know whether there is a difference in the mean number of
service calls they make per day. Assume the population standard
deviation for Larry Clark is 1.05 calls per day, and 1.23 calls per
day for George Murnen. A random sample of 40 days last year
showed that Larry Clark made an average of 4.77 calls per day.
For a sample of 50 days, George Murnen made an average of
5.02 calls per day. At the .05 significance level, is there a
difference in the mean number of calls per day between the two
employees? What is the p-value? Chapters 11 & 12 1. A
consumer organization wants to know if there is a difference in
the price of a particular toy at three different types of stores. The
price of the toy was checked in a sample of five discount toy
stores, five variety stores, and five department stores. The results
are shown below. An ANOVA was run and the results are shown
below. At the .05 significance level, is there a difference in the

mean prices between the three stores? What is the p-value?
Explain why an ANOVA was used to analyze this problem. 2. A
physician who specializes in weight control has three different
diets she recommends. As an experiment, she randomly selected
15 patients and then assigned 5 to each diet. After three weeks
the following weight losses, in pounds, were noted. At the .05
significance level, can she conclude that there is a difference in
the mean amount of weight loss among the three diets? An
ANOVA was run and the results are shown below. At the .01
significance level, is there a difference in the weight loss between
the three plans? What is the p-value? What can you do to
determine exactly where the difference is?
2. ---------------------------------------------------------------------------------
------
3.
What is a correlation? What are the different types of correlation
research? Why is it important to determine correlation? How is the
strength of a correlation determined?
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If anxiety and depression are correlated, what three possible directions
of causality might explain this correlation?

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PSY 315 Week 5 Individual Assignment Hypothesis Testing Paper
Resource: Instructor approved research issue, problem, or opportunity
in the field of psychology
Prepare a 1,400- to 1,750-word paper in which you formulate a
hypothesis based on your selected research issue, problem, or
opportunity.
Address the following:
 Describe your selected research issue, problem, or opportunity.
 Formulate a hypothesis statement concerning your selected
research issue, problem, or opportunity.
 Determine your population and describe which sampling method
you would use to generate your sample
 Describe how you would collect your data, the level of
measurement of your data and which statistical technique you
would use to analyze the data. Explain why you chose that
statistical technique.
Include a conclusion of your anticipated findings.
Format your paper consistent with APA guidelines.
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Presentation
Create a 12- to 15-slide presentation using the information you
gathered and submitted in Weeks 3 & 4. Include the following: •
Describe the problem, and provide some brief background about the
situation. • Explain the research hypothesis. • Describe your sample
and your sampling method. • Explain the four steps of the research
process you followed, and define the critical value and the test
statistic your analysis provided. • Provide the main finding of the
study. What did you prove or fail to prove? • Provide
recommendations based on your findings. Format any citations in
your presentation according to APA guidelines.
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Provide a response to the following questions. Note: Each team
member should compute the following questions and submit them to
the Learning Team forum. The team should then discuss each team
member’s answers to ascertain the correct answer for each question.
Once your team has answered all the questions, submit a finalized
team worksheet. Your research team has been tasked with finding the
correlation of the following scenario: Four research participants take
a test of manual dexterity (high scores mean better dexterity) and an

anxiety test (high scores mean more anxiety). The scores are as
follows: Person Dexterity Anxiety 1 1 10 2 1 8 3 2 4 4 4 -2 Describe the
process your research team would go through by completing the
following: 1. Create a scatter diagram of the scores, which should be a
negative direction. 2. Describe in words the general pattern of
correlation, if any. 3. Figure the correlation coefficient. 4. Explain the
logic of what you have done, writing as if you are speaking to someone
who has never heard of correlation (but who does understand the
mean, standard deviation, Z scores, and hypothesis testing). 5. Provide
three logically possible directions of causality, indicating for each
direction whether it is a reasonable explanation for the correlation in
light of the variables involved. Explain why.
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