Question 1

In what sense are percentile ranks and standard scores similar to each other?

Accepted Answer

Percentile ranks and standard scores are measures used to identify the location of a specified score within a set of scores.They represent an individual's performance on some variable relative to some group of individuals.They do not convey performance in an absolute sense.

Question 2

The score value corresponding to a given percentile rank is referred to as a _____.

Accepted Answer

A) z-score 
B) percentage 
C) percentile 
D) none of these 
A) z-score 
B) percentage 
C) percentile 
D) none of these C

Question 3

The median is the same as the____________________.

Accepted Answer

50th percentile

Question 4

One important use of standard scores is to compare scores on distributions that have different _____ and _____.

Accepted Answer

A) medians and IQRs 
B) standard deviations and variances 
C) means and standard deviations 
D) none of these 
A) medians and IQRs 
B) standard deviations and variances 
C) means and standard deviations 
D) none of these

Question 5

Given a normal distribution of test scores with
= 80,s2 = 49,what is the z score corresponding to a test score of 95?

Accepted Answer

A) .31 
B) -.31 
C) 2.14 
D) -2.14 
A) .31 
B) -.31 
C) 2.14 
D) -2.14

Question 6

An instructor has given his final exam and scores that are normally distributed.Nancy scores a 90 and Ronald scores a 75.The class mean on the exam was 85 and the standard deviation was 36.What is Ronald's z score?

Accepted Answer

A) 1.67 
B) -1.67 
C) 0.28 
D) -0.28 
A) 1.67 
B) -1.67 
C) 0.28 
D) -0.28

Question 7

What are some of the advantages of standard scores over percentile ranks?

Accepted Answer

A percentile rank reflects only an ordin

Question 8

Why are standard scores more meaningful when they occur in a normal distribution?

Accepted Answer

In normal distributions,the proportion o

Question 9

Jill took an English test and is -1 standard units below the class mean.What was her raw score on the test?

Accepted Answer

She is 1 s

Question 10

A _____ score in a _____ distribution is referred to as a z score.

Accepted Answer

A) raw;normal 
B) standard;normal 
C) raw;binomial 
D) standard;binomial 
A) raw;normal 
B) standard;normal 
C) raw;binomial 
D) standard;binomial

Question 11

If Jack's standard score on his math test is .60 and -.75 on his English he did better on his____.

Accepted Answer

The answer of If Jack's standard score on his math...

Question 12

All normal distributions are characterized by a "bell shape."

Accepted Answer

A) True 
 B)False

Question 13

The sum of a set of standard scores equals

Accepted Answer

A) 0 
B) 1 
C) the mean of the set of standard scores 
D) both a and c 
E) both b and c 
A) 0 
B) 1 
C) the mean of the set of standard scores 
D) both a and c 
E) both b and c

Question 14

Most empirical data is normally distributed.

Accepted Answer

A) True 
 B)False

Question 15

What is a z score?

Accepted Answer

A z score is a stand

Question 16

A percentile rank is an interval measure of relative standing.

Accepted Answer

A) True 
 B)False

Question 17

Based on the Method of Presentation section of Chapter 4,what would be the T score of a standard score of 2.5?

Accepted Answer

A) -4.75 
B) 2.5 
C) 75 
D) 135 
A) -4.75 
B) 2.5 
C) 75 
D) 135

Question 18

A psychologist is interested in how well people can remember words that they had previously seen.He gives them a list of 70 words,but does not tell them they will be tested later.One week later the students are given a list of 140 words,and told to choose the ones they had seen the previous week.Below is the grouped distribution of the number of words remembered by the subjects.
What is the score at the 90th percentile?

Accepted Answer

A) 42.5 
B) 44.5 
C) 45 
D) 47 
A) 42.5 
B) 44.5 
C) 45 
D) 47

Question 19

When comparing to scores from different distributions you should convert them into a Standard Distribution.

Accepted Answer

A) True 
 B)False

Question 20

What proportion of scores in a normal distribution are between z = -2.62 and z = 1.07

Accepted Answer

A) .1467 
B) .3577 
C) .4956 
D) .8533 
A) .1467 
B) .3577 
C) .4956 
D) .8533

In what sense are percentile ranks and standard scores similar to each other?

The score value corresponding to a given percentile rank is referred to as a _____.

The median is the same as the____________________.

One important use of standard scores is to compare scores on distributions that have different _ and _.

Given a normal distribution of test scores with = 80,s²= 49,what is the z score corresponding to a test score of 95?

An instructor has given his final exam and scores that are normally distributed.Nancy scores a 90 and Ronald scores a 75.The class mean on the exam was 85 and the standard deviation was 36.What is Ronald's z score?

What are some of the advantages of standard scores over percentile ranks?

Why are standard scores more meaningful when they occur in a normal distribution?

Jill took an English test and is -1 standard units below the class mean.What was her raw score on the test?

A _ score in a _ distribution is referred to as a z score.

If Jack's standard score on his math test is .60 and -.75 on his English he did better on his____.

All normal distributions are characterized by a "bell shape."

The sum of a set of standard scores equals

Most empirical data is normally distributed.

What is a z score?

A percentile rank is an interval measure of relative standing.

Based on the Method of Presentation section of Chapter 4,what would be the T score of a standard score of 2.5?

When comparing to scores from different distributions you should convert them into a Standard Distribution.

What proportion of scores in a normal distribution are between z = -2.62 and z = 1.07

Introduction and Mathematical Preliminaries

Frequency and Probability Distributions

Measures of Central Tendency and Variability

Pearson Correlation and Regression: Descriptive Aspects

Probability

Estimation and Sampling Distributions

Hypothesis Testing: Inferences About a Single Mean

Principles of Research Design and Statistical Preliminaries for Analyzing Bivariate Relationships

Independent Groups T-Test

Correlated Groups T-Test

One-Way Repeated Measures Analysis of Variance

Pearson Correlation and Regression: Inferential Aspects

Chi-Square Test

Nonparametric Statistics

Two-Way Between-Subjects Analysis of Variance

Overview and Extension: Statistical Tests for More Complex Designs

Filters

Exam 4: Percentiles,percentile Ranks,standard Scores,and the Normal Distribution

In what sense are percentile ranks and standard scores similar to each other?

The score value corresponding to a given percentile rank is referred to as a _____.

The median is the same as the____________________.

One important use of standard scores is to compare scores on distributions that have different _____ and _____.

Given a normal distribution of test scores with = 80,s2 = 49,what is the z score corresponding to a test score of 95?

An instructor has given his final exam and scores that are normally distributed.Nancy scores a 90 and Ronald scores a 75.The class mean on the exam was 85 and the standard deviation was 36.What is Ronald's z score?

What are some of the advantages of standard scores over percentile ranks?

Why are standard scores more meaningful when they occur in a normal distribution?

Jill took an English test and is -1 standard units below the class mean.What was her raw score on the test?

A _____ score in a _____ distribution is referred to as a z score.

If Jack's standard score on his math test is .60 and -.75 on his English he did better on his____.

All normal distributions are characterized by a "bell shape."

The sum of a set of standard scores equals

Most empirical data is normally distributed.

What is a z score?

A percentile rank is an interval measure of relative standing.

Based on the Method of Presentation section of Chapter 4,what would be the T score of a standard score of 2.5?

When comparing to scores from different distributions you should convert them into a Standard Distribution.

What proportion of scores in a normal distribution are between z = -2.62 and z = 1.07

Introduction and Mathematical Preliminaries

Frequency and Probability Distributions

Measures of Central Tendency and Variability

Pearson Correlation and Regression: Descriptive Aspects

Probability

Estimation and Sampling Distributions

Hypothesis Testing: Inferences About a Single Mean

Principles of Research Design and Statistical Preliminaries for Analyzing Bivariate Relationships

Independent Groups T-Test

Correlated Groups T-Test

One-Way Repeated Measures Analysis of Variance

Pearson Correlation and Regression: Inferential Aspects

Chi-Square Test

Nonparametric Statistics

Two-Way Between-Subjects Analysis of Variance

Overview and Extension: Statistical Tests for More Complex Designs

Filters

One important use of standard scores is to compare scores on distributions that have different _ and _.

Given a normal distribution of test scores with = 80,s²= 49,what is the z score corresponding to a test score of 95?

A _ score in a _ distribution is referred to as a z score.