This document discusses different types of test scores, including raw scores, percentage scores, derived scores, developmental scores, and scores of relative standing. It provides definitions and examples of various standard scores like z-scores, t-scores, deviation IQ scores, normal curve equivalents, stanines, and percentile ranks. These standard scores transform raw scores into common scales that allow comparison of performance across different tests. The document explains how to calculate and interpret different standard score types.
Methods of Interpreting Test Scores
Interpretation of test Scores
Referencing Framework
Percentage
Standard deviation
Ranking
Frequency Distribution
Pictoral Form
Norm referenced and Criterion Referenced TestDrSindhuAlmas
By the end of the lesson, students will be able to:
Differentiate between Criterion-referenced tests (CRT) and Norm- referenced tests (NRT).
State uses of CRT and NRT.
Describe ways of interpreting CRT and NRT.
Here are my slides for my report for my Advanced Measurements and Evaluation subject on Educational Measurement and Evaluation. #Polytechnic University of the Philippines. #GraduateSchool
Methods of Interpreting Test Scores
Interpretation of test Scores
Referencing Framework
Percentage
Standard deviation
Ranking
Frequency Distribution
Pictoral Form
Norm referenced and Criterion Referenced TestDrSindhuAlmas
By the end of the lesson, students will be able to:
Differentiate between Criterion-referenced tests (CRT) and Norm- referenced tests (NRT).
State uses of CRT and NRT.
Describe ways of interpreting CRT and NRT.
Here are my slides for my report for my Advanced Measurements and Evaluation subject on Educational Measurement and Evaluation. #Polytechnic University of the Philippines. #GraduateSchool
Topic: Norm Referenced and Criterion Referenced
Student Name: Madiha Shahid
Class: B.Ed. Hons Elementary Part (II)
Project Name: “Young Teachers' Professional Development (TPD)"
"Project Founder: Prof. Dr. Amjad Ali Arain
Faculty of Education, University of Sindh, Pakistan
Topic: What is Reliability and its Types?
Student Name: Kanwal Naz
Class: B.Ed 1.5
Project Name: “Young Teachers' Professional Development (TPD)"
"Project Founder: Prof. Dr. Amjad Ali Arain
Faculty of Education, University of Sindh, Pakistan
Validity:
Validity refers to how well a test measures what it is purported to measure.
Types of Validity:
1. Logic valididty:
Validity which is in the form of theory, statements. It has 2 types.
I. Face Validity:
It is the extent to which the measurement method appears “on its face” to measure the construct of interest.
• Example:
• suppose you were taking an instrument reportedly measuring your attractiveness, but the questions were asking you to identify the correctly spelled word in each list
II. Content Validity:
Measuring all the aspects contributing to the variable of the interest.
Example:
For physical fitness temperature, height and stamina are supposed to be assess then a test of fitness must include content about temperatures, height and stamina.
2. Criterion
It is the extent to which people’s scores are correlated with other variables or criteria that reflect the same construct
Example:
An IQ test should correlate positively with school performance.
An occupational aptitude test should correlate positively with work performance.
Types of Criterion Validity
Concurrent validity:
• When the criterion is something that is happening or being assessed at the same time as the construct of interest, it is called concurrent validity.
• Example:
Beef test.
Predictive validity:
• A new measure of self-esteem should correlate positively with an old established measure. When the criterion is something that will happen or be assessed in the future, this is called predictive validity.
• Example:
GAT, SAT
Other types of validity
Internal Validity:
It is basically the extent to which a study is free from flaws and that any differences in a measurement are due to an independent variable and nothing else
External Validity
• It is the extent to which the results of a research study can be generalized to different situations, different groups of people, different settings, different conditions, etc.
It talks about the different types of validity in assessment.
* Face Validity
* Content Validity
* Predictive Validity
* Concurrent Validity
* Construct Validity
Topic: Statistics in Education
Student Name: Ahmed Nawaz
Class: M.Ed
Project Name: “Young Teachers' Professional Development (TPD)"
"Project Founder: Prof. Dr. Amjad Ali Arain
Faculty of Education, University of Sindh, Pakistan
This presentation includes meaning of Aptitude test, with its importance and use in education.Advantages and disadvantages of using aptitude test as well as references are their for further readings.
This is my report in my Assessment II subject. I am assigned to discuss on how to interpret test scores by standard deviation unit, Z-score, T-score, Stanine, Deviation IQ and NCE.
Topic: Norm Referenced and Criterion Referenced
Student Name: Madiha Shahid
Class: B.Ed. Hons Elementary Part (II)
Project Name: “Young Teachers' Professional Development (TPD)"
"Project Founder: Prof. Dr. Amjad Ali Arain
Faculty of Education, University of Sindh, Pakistan
Topic: What is Reliability and its Types?
Student Name: Kanwal Naz
Class: B.Ed 1.5
Project Name: “Young Teachers' Professional Development (TPD)"
"Project Founder: Prof. Dr. Amjad Ali Arain
Faculty of Education, University of Sindh, Pakistan
Validity:
Validity refers to how well a test measures what it is purported to measure.
Types of Validity:
1. Logic valididty:
Validity which is in the form of theory, statements. It has 2 types.
I. Face Validity:
It is the extent to which the measurement method appears “on its face” to measure the construct of interest.
• Example:
• suppose you were taking an instrument reportedly measuring your attractiveness, but the questions were asking you to identify the correctly spelled word in each list
II. Content Validity:
Measuring all the aspects contributing to the variable of the interest.
Example:
For physical fitness temperature, height and stamina are supposed to be assess then a test of fitness must include content about temperatures, height and stamina.
2. Criterion
It is the extent to which people’s scores are correlated with other variables or criteria that reflect the same construct
Example:
An IQ test should correlate positively with school performance.
An occupational aptitude test should correlate positively with work performance.
Types of Criterion Validity
Concurrent validity:
• When the criterion is something that is happening or being assessed at the same time as the construct of interest, it is called concurrent validity.
• Example:
Beef test.
Predictive validity:
• A new measure of self-esteem should correlate positively with an old established measure. When the criterion is something that will happen or be assessed in the future, this is called predictive validity.
• Example:
GAT, SAT
Other types of validity
Internal Validity:
It is basically the extent to which a study is free from flaws and that any differences in a measurement are due to an independent variable and nothing else
External Validity
• It is the extent to which the results of a research study can be generalized to different situations, different groups of people, different settings, different conditions, etc.
It talks about the different types of validity in assessment.
* Face Validity
* Content Validity
* Predictive Validity
* Concurrent Validity
* Construct Validity
Topic: Statistics in Education
Student Name: Ahmed Nawaz
Class: M.Ed
Project Name: “Young Teachers' Professional Development (TPD)"
"Project Founder: Prof. Dr. Amjad Ali Arain
Faculty of Education, University of Sindh, Pakistan
This presentation includes meaning of Aptitude test, with its importance and use in education.Advantages and disadvantages of using aptitude test as well as references are their for further readings.
This is my report in my Assessment II subject. I am assigned to discuss on how to interpret test scores by standard deviation unit, Z-score, T-score, Stanine, Deviation IQ and NCE.
Work hard to make certain that the results you have are accurate b.docxkeilenettie
Work hard to make certain that the results you have are accurate based on class material.
Use T- table and Z-table when needed.
Feel free to consult and cite the notes and previous assignments in preparing this exam.
Please show all of your working out so I am able to see your path to your answer. Mistakes will be penalized however showing your working out will allow me to deduct fewer points. If no working out is shown, I will be forced to deduct full points for mistakes.
**
.
Z table and T table are attached.
Please read carefully
!
When appropriate and possible, express your answer in the same units as the variable.
For example, if the question asks for the mean years of formal education and you have calculated the mean to be 18.44, your answer should be expressed as “
18.44 years of formal education
.”
Equations to Use
Median Position = N+1/2
The
Median Value
is the midpoint between the scores.
Mean
=
å
x
/ N
Standard Deviation =
Z score =
x – mean / standard deviation
CI =
For samples sizes ≥ 100,
the formula for the
CI
is:
CI
=
(the sample mean) + & - Z(
s / √N – 1)
CI =
For samples sizes < 100,
the formula for the
CI
is:
CI
=
(the sample mean) + & - T(
s / √N – 1)
Please answer the following questions:
You are interested in the effects of release with aftercare for a small number of drug offenders. The number of additional months without drug use for a sample
of 6 offenders
is recorded. The data on the six (6) subjects are as follows:
2
8
5
2
8
2
What are the
median position
and the
median value
?
(3 points)
What is the mean?
(
2 points)
What is the most frequently occurring score in this distribution of scores - mode?
(2 point)
2. Computation of a mode is most appropriate when a variable is measured at which level?
(2 points)
A. interval-ratio
B. ordinal
C. nominal
D. discrete
Answer: ________________________
3.
Assume that the distribution of a college entrance exam is normal with
a mean of 500 and a standard deviation of 100
.
For each score below, find the equivalent Z score, the percentage of the area above the score, and the percentage of the area below the score.
( 5 each = total 10 points)
Score Z score % Area Above % Area Below
a) 437
b) 526
4. The class intervals below represent ages of respondents. Which list is both exhaustive and mutually exclusive?
(2 points)
A. 119–120, 120–121, 121–122
B. 119–120, 121–122, 123–124
C. 119–121, 123–125, 127–129
D. 119–120, 122–123, 125–126
Answer: ______________________
5. The parole board is alarmed by the low number of years actually spent in prison for those inmates sentences to 15-year sentences. To help them make parole recommendations they gather data on the number of years served for a small sample of 7 (
seven) p
otential parolees. The number of years served for these seven parol.
This is a copy of my presentation of "The Research Problem" that was based on the resources provided by the school.
Pictures were taken from Google images and the slide design is from GoSlides.com (It offers a lot of PPT Designs).
This Learning Plan is open to be corrected or enhanced. This is just a sample of Lesson plan that was used during my classroom observation in Mathematics 6 of Second Quarter.
DISCLAIMER: Some photos are not owned by the presenter. it was taken from various sites on Google.
COT LESSON PLAN ADDING AND SUBTRACTING SIMILAR FRACTIONS - EXPLICITCRISALDO CORDURA
This Learning Plan is open to be corrected or enhanced. This is just a sample of Lesson plan that was used during my classroom observation in Mathematics 5 of Second Quarter.
DISCLAIMER: Some photos are not owned by the presenter. it was taken from various sites on Google.
ESL 231 - CRISALDO H CORDURA - Why Formal Links are not Enough.pptxCRISALDO CORDURA
This is a copy of my presentation of "Why Formal links are not Enough" that was based from the resources provided by the school.
Some data from the slides was also taken from Discourse_Analysis_Unit_II_ 2013.pdf (lenguasvivas.org)
Two Views of Discourse Structure: As a Product and As a ProcessCRISALDO CORDURA
This is are 3 presenter presentation on the discussion of "Two Views of Discourse Structure: As a Product and As a Process"
Credit to
https://uomustansiriyah.edu.iq/media/lectures/8/8_2020_03_30!04_57_35_PM.pptx
and
The book from the school
This is a power-point presentation of the module 7 lesson for fourth quarter for the grade 4 pupils. The reference of this file is from DEPED Region IX SLM.
This file is intended to be used by teacher to make a little bit easier to present their lesson.
Disclaimer: I am not the owner of the module.
This is a power-point presentation of the module 5 lesson for fourth quarter for the grade 4 pupils. The reference of this file is from DEPED Region IX SLM.
This file is intended to be used by teacher to make a little bit easier to present their lesson.
Disclaimer: I am not the owner of the module.
This is a power-point presentation of the module 2 lesson for fourth quarter for the grade 4 pupils. The reference of this file is from DEPED Region IX SLM.
This file is intended to be used by teacher to make a little bit easier to present their lesson.
Disclaimer: I am not the owner of the module.
This is a power-point presentation of the module 1 lesson for fourth quarter for the grade 4 pupils. The reference of this file is from DEPED Region IX SLM.
This file is intended to be used by teacher to make a little bit easier to present their lesson.
Disclaimer: I am not the owner of the module.
This is a power-point presentation of the module 3 lesson for fourth quarter for the grade 4 pupils. The reference of this file is from DEPED Region IX SLM.
This file is intended to be used by teacher to make a little bit easier to present their lesson.
Disclaimer: I am not the owner of the module.
This is a power-point presentation of the module 6 lesson for fourth quarter for the grade 4 pupils. The reference of this file is from DEPED Region IX SLM.
This file is intended to be used by teacher to make a little bit easier to present their lesson.
Disclaimer: I am not the owner of the module.
This is a power-point presentation of the module 4 lesson for fourth quarter for the grade 4 pupils. The reference of this file is from DEPED Region IX SLM.
This file is intended to be used by teacher to make a little bit easier to present their lesson.
Disclaimer: I am not the owner of the module.
4A's SAMPLE LESSON PLAN- SPEED, TIME, & DISTANCECRISALDO CORDURA
Disclaimer: Some photos were taken from google and NOT MINE.
this isn't a perfect lesson plan but if you wish to borrow you can edit it in a way that is suitable for how you deliver your lesson.
this lesson plan also was supposed to be my COT 1 but wasn't because because of the delay of time.
Sample Lesson Plan: Finding the Area of a Composite FigureCRISALDO CORDURA
This Learning Plan is open to be corrected or enhanced. This is just a sample of Lesson plan that will be used for online class of Mathematics 6: Module 6
DISCLAIMER: Some photos are not owned by the presenter. it was taken from various sites on Google.
Finding Area of a Composite Figure (Presentation)CRISALDO CORDURA
This Presentation was adopted to Buklat-Ulat a presentation from lightning talks: Innovation. This presentation is also powered by Classpoint, one of the newest ans easiest embeded application that we can put in our presentation
Disclaimer: Some photos do not owned by the presenter and it was borrowed from google.
Ethnobotany and Ethnopharmacology:
Ethnobotany in herbal drug evaluation,
Impact of Ethnobotany in traditional medicine,
New development in herbals,
Bio-prospecting tools for drug discovery,
Role of Ethnopharmacology in drug evaluation,
Reverse Pharmacology.
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.
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.
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.
Instructions for Submissions thorugh G- Classroom.pptxJheel Barad
This presentation provides a briefing on how to upload submissions and documents in Google Classroom. It was prepared as part of an orientation for new Sainik School in-service teacher trainees. As a training officer, my goal is to ensure that you are comfortable and proficient with this essential tool for managing assignments and fostering student engagement.
Students, digital devices and success - Andreas Schleicher - 27 May 2024..pptxEduSkills OECD
Andreas Schleicher presents at the OECD webinar ‘Digital devices in schools: detrimental distraction or secret to success?’ on 27 May 2024. The presentation was based on findings from PISA 2022 results and the webinar helped launch the PISA in Focus ‘Managing screen time: How to protect and equip students against distraction’ https://www.oecd-ilibrary.org/education/managing-screen-time_7c225af4-en and the OECD Education Policy Perspective ‘Students, digital devices and success’ can be found here - https://oe.cd/il/5yV
The Indian economy is classified into different sectors to simplify the analysis and understanding of economic activities. For Class 10, it's essential to grasp the sectors of the Indian economy, understand their characteristics, and recognize their importance. This guide will provide detailed notes on the Sectors of the Indian Economy Class 10, using specific long-tail keywords to enhance comprehension.
For more information, visit-www.vavaclasses.com
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”.
2. WHAT IS ATEST SCORE?
•A test score is a piece of information, usually a number,
that conveys the performance of an examinee on a test.
• One formal definition is that it is "a
summary of the evidence
contained in an examinee's
responses to the items of a test
that are related to the construct or
constructs being measured."
3. Types of scores
Raw Scores
Percentage Scores
Derived Scores
Developmental Scores
Scores of Relative
4. WHAT IS A RAW SCORE?
The raw score is the number of items a
student answers correctly without
adjustment for guessing.
For example, if there are 15 problems on
an arithmetic test, and a student
answers 11 correctly, then the raw score
is 11. Raw scores, however, do not
provide us with enough information to
describe student performance.
5. Percentage
Scores
A percentage score is the percent
of test items answered correctly.
These scores can be useful when describing a
student's performance on a teacher-made
test or on a criterion-referenced test.
However, percentage scores have a
major disadvantage:We have no way of
comparing the percentage correct on
one test with the percentage correct on
another test. Suppose a child earned a
score of 85 percent correct on one test
and 55 percent correct on another test.
The interpretation of the score is related
to the difficulty level of the test items on
each test. Because each test has a
different or unique level of difficulty, we
have no common way to interpret these
scores; there is no frame of reference.
6. Derived Scores Derived scores are a family of
scores that allow us to make
comparisons between test scores.
Raw scores are
transformed to
derived scores.
Developmental scores and scores
of relative standing are two types of
derived scores. Scores of relative
standing include percentiles,
standard scores, and stanines.
7. Developmental
Scores
Sometimes called age and grade
equivalents, developmental scores are
scores that have been transformed from
raw scores and reflect the average
performance at age and grade levels.
Thus, the student's raw score
(number of items correct) is the same
as the average raw score for students
of a specific age or grade. Age
equivalents are written with a hyphen
between years and months (e.g., 12–4
means that the age equivalent is 12
years, 4 months old). A decimal point
is used between the grade and month
in grade equivalents (e.g., 1.2 is the
first grade, second month).
8. Scores of Relative
A percentile rank is the point in a
distribution at or below which the scores
of a given percentage of students fall.
Percentiles provide information about
the relative standing of students when
compared with the standardization
sample. Look at the following test
scores and their corresponding
percentile ranks.
10. What is a Standard Score?
Standard score is the name
given to a group or category
of scores. Each specific type
of standard score within this
group has the same mean
and the same standard
deviation.
11. The different types of Standard Scores:
Z-Scores
T-Scores
Deviation IQ Scores
Normal Curves Equivalents
Stanines
Percentile Ranks
13. Calculating Z-Scores
z =
(raw score – mean)
standard deviation
raw score = 31, mean =27, S = 6.
z =
(31 – 27)
6
= 4/6 or .67
Interpretation
The person scored .67
standard deviations
above the mean.
14. How to Identify Z-Scores?
Positive and Negative Z-Scores
Some z-scores will be positive
whereas others will be negative. If
a z-score is positive, its’
corresponding raw score is above
(greater than) the mean. If a z-
score is negative, its’
corresponding raw score is below
(less than) the mean.
http://statistics-help-for-students.com/How_do_I_interpret_Z_score_data_in_SPSS.htm#.W1I4vbgRXIU
15. T-Scores
A t score is one form of a
standardized test statistic (the other
you’ll come across in elementary
statistics is the z-score). The t score
formula enables you to take an
individual score and transform it
into a standardized form>one which
helps you to compare scores.
http://www.statisticshowto.com/probability-and-statistics/t-
distribution/t-score-formula/
have a mean of
50 and a
standard
deviation of 10.
16. Formula forT-Scores:
If you have only one item in
your sample, the square root in
the denominator becomes √1.
This means the formula
becomes:
17. Sample question:
A law school claims it’s graduates earn an
average of $300 per hour. A sample of 15
graduates is selected and found to have a
mean salary of $280 with a sample standard
deviation of $50. Assuming the school’s claim
is true, what is the probability that the mean
salary of graduates will be no more than $280?
18. Step 1: Plug the information into the
formula and solve:
x̄ = sample mean = 280
μ0 = population mean = 300
s = sample standard deviation = 50
n = sample size = 15
19. t = (280 – 300)/ (50/√15) = -20 / 12.909945 = -1.549.
Step 2: Subtract 1 from the sample size to get the
degrees of freedom:
15 – 1 = 14.The degrees of freedom lets you know
which form of the t distribution to use (there are
many, but you can solve these problems without
knowing that fact!).
20. Step 3: Use a calculator to find the probability using your
degrees of freedom (8).You have several options, including
theTI-83 (see How to find a t distribution on aTI 83) and
this online calculator. Here’s the result from that
calculator. Note that I selected the radio button under the
left tail, as we’re looking for a result that’s no more than
$280:
https://surfstat.anu.edu.au/surfstat-home/tables/t.php
24. Deviation IQ scores are frequently used to report
the performance of students on norm-referenced
standardized tests. The deviation scores of the
Wechsler Intelligence Scale for Children–III and the
Wechsler Individual Achievement Test–II have a
mean of 100 and a standard deviation of 15, while
the Stanford-Binet Intelligence Scale–IV has a mean
of 100 and a standard deviation of 16. Many test
manuals provide tables that allow conversion of raw
scores to deviation IQ scores.
26. Normal curve equivalents (NCEs) a type
of standard score with a mean of 50 and a
standard deviation of 21.06. When the
baseline of the normal curve is divided into
99 equal units, the percentile ranks of 1,
50, and 99 are the same as NCE units
(Lyman, 1986). One test that does report
NCEs is the Developmental Inventory-
2.However, NCEs are not reported for
some tests.
28. Stanines are bands of standard scores that have a mean
of 5 and a standard deviation of 2. Stanines range from
1 to 9. Despite their relative ease of interpretation,
stanines have several disadvantages. A change in just a
few raw score points can move a student from one
stanine to another. Also, because stanines are a general
way of interpreting test performance, caution is
necessary when making classification and placement
decisions. As an aid in interpreting stanines, evaluators
can assign descriptors to each of the 9 values:
30. Percentile ranks
Point in a distribution at or below
which the scores of a given percentage
of students fall.
31. References:
Excerpt from Assessment of Children & Youth with Special Needs, by L.G. Cohen, L.J.
Spenciner, 2007 edition, p. 57-62
http://www.statisticshowto.com/probability-and-statistics/t-distribution/t-score-formula/
https://surfstat.anu.edu.au/surfstat-home/tables/t.php
Editor's Notes
Because each type of standard score has the same mean and the same standard deviation, standard scores are an excellent way of representing a child's performance. Standard scores allow us to compare a child's performance on several tests and to compare one child's performance to the performance of other students. Unlike percentile scores, standard scores function in mathematical operations. For instance, standard scores can be averaged.