Question 1

Z-scores are based on the use of the bell shape curve.

Accepted Answer

A) True 
 B)False

Question 2

Janet received an 80 on her English exam and a 50 on her chemistry exam.The
Mean for the class in English was 78 SD=2 and the mean for the chemistry exam was 48 and SD = 4.Transform Janet's score on her Chemistry exam into a T-score.

Accepted Answer

The answer of Janet received an 80 on her English...

Question 3

What are some of the important properties of standard scores?

Accepted Answer

A positive standard score indicates that

Question 4

The _____ and the _____ of a set of standard scores is always equal to 1.00.

Accepted Answer

A) mean;variance 
B) standard deviation;variance 
C) variance;range 
D) mean;standard deviation 
A) mean;variance 
B) standard deviation;variance 
C) variance;range 
D) mean;standard deviation

Question 5

What raw score in a normal distribution would correspond to a z score of 1.56 with a mean equal to 75 and standard deviation of 2?

Accepted Answer

A) 78.12 
B) 64.13 
C) 68.90 
D) 34.45 
A) 78.12 
B) 64.13 
C) 68.90 
D) 34.45

Question 6

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 7

A _____ standard score indicates that the original score is _____ than the mean.

Accepted Answer

A) positive;greater 
B) negative;less 
C) a and b 
D) neither a nor b 
A) positive;greater 
B) negative;less 
C) a and b 
D) neither a nor b

Question 8

The scores below represent the results of an in-class quiz worth 10 points.
How many students had a score at or below 8?

Accepted Answer

A) 75% 
B) 60% 
C) 25% 
D) None of these 
A) 75% 
B) 60% 
C) 25% 
D) None of these

Question 9

The proportion of scores occurring between standard scores of 0 and -1 is less than the proportion of scores occurring between standard scores of 0 and +1.

Accepted Answer

A) True 
 B)False

Question 10

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 11

When a standard score is 0,the original (raw)score is equal to the _____ of the distribution.

Accepted Answer

A) mode 
B) median 
C) mean 
D) standard deviation 
A) mode 
B) median 
C) mean 
D) standard deviation

Question 12

Standardization _____ the skewness and kurtosis of the scores.

Accepted Answer

A) affects 
B) does not affect 
C) minimizes 
D) maximizes 
A) affects 
B) does not affect 
C) minimizes 
D) maximizes

Question 13

An instructor has given his final exam,and scores are approximately normally distributed.Nancy scores a 90 and Ronald scores a 75.The characteristics of the distribution are as follows:
= 85,s2 = 36.What is Ronald's z score?

Accepted Answer

A) 1.67 
B) -1.67 
C) .28 
D) -.28 
A) 1.67 
B) -1.67 
C) .28 
D) -.28

Question 14

Percentiles are based on what scale of measurement?

Accepted Answer

A) Nominal 
B) Ordinal 
C) Ratio 
D) All of these 
A) Nominal 
B) Ordinal 
C) Ratio 
D) All of these

Question 15

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

Accepted Answer

A) True 
 B)False

Question 16

Why are standard scores important?

Accepted Answer

A) They allow us to compare scores from different distributions 
B) They allow us to predict behavior 
C) They allow us to put scores into an ordinal distribution 
D) None of these 
A) They allow us to compare scores from different distributions 
B) They allow us to predict behavior 
C) They allow us to put scores into an ordinal distribution 
D) None of these

Z-scores are based on the use of the bell shape curve.

Janet received an 80 on her English exam and a 50 on her chemistry exam.The Mean for the class in English was 78 SD=2 and the mean for the chemistry exam was 48 and SD = 4.Transform Janet's score on her Chemistry exam into a T-score.

What are some of the important properties of standard scores?

The _ and the _ of a set of standard scores is always equal to 1.00.

What raw score in a normal distribution would correspond to a z score of 1.56 with a mean equal to 75 and standard deviation of 2?

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

A _ standard score indicates that the original score is _ than the mean.

The scores below represent the results of an in-class quiz worth 10 points. How many students had a score at or below 8?

The proportion of scores occurring between standard scores of 0 and -1 is less than the proportion of scores occurring between standard scores of 0 and +1.

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

When a standard score is 0,the original (raw)score is equal to the _____ of the distribution.

Standardization _____ the skewness and kurtosis of the scores.

An instructor has given his final exam,and scores are approximately normally distributed.Nancy scores a 90 and Ronald scores a 75.The characteristics of the distribution are as follows: = 85,s² = 36.What is Ronald's z score?

Percentiles are based on what scale of measurement?

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

Why are standard scores important?

Introduction and Mathematical Preliminaries

Frequency and Probability Distributions

Pearson Correlation and Regression: Descriptive Aspects

Measures of Central Tendency and Variability

Estimation and Sampling Distributions

Hypothesis Testing: Inferences About a Single Mean

Probability

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

Z-scores are based on the use of the bell shape curve.

Janet received an 80 on her English exam and a 50 on her chemistry exam.The Mean for the class in English was 78 SD=2 and the mean for the chemistry exam was 48 and SD = 4.Transform Janet's score on her Chemistry exam into a T-score.

What are some of the important properties of standard scores?

The _____ and the _____ of a set of standard scores is always equal to 1.00.

What raw score in a normal distribution would correspond to a z score of 1.56 with a mean equal to 75 and standard deviation of 2?

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

A _____ standard score indicates that the original score is _____ than the mean.

The scores below represent the results of an in-class quiz worth 10 points. How many students had a score at or below 8?

The proportion of scores occurring between standard scores of 0 and -1 is less than the proportion of scores occurring between standard scores of 0 and +1.

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

When a standard score is 0,the original (raw)score is equal to the _____ of the distribution.

Standardization _____ the skewness and kurtosis of the scores.

An instructor has given his final exam,and scores are approximately normally distributed.Nancy scores a 90 and Ronald scores a 75.The characteristics of the distribution are as follows: = 85,s2 = 36.What is Ronald's z score?

Percentiles are based on what scale of measurement?

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

Why are standard scores important?

Introduction and Mathematical Preliminaries

Frequency and Probability Distributions

Pearson Correlation and Regression: Descriptive Aspects

Measures of Central Tendency and Variability

Estimation and Sampling Distributions

Hypothesis Testing: Inferences About a Single Mean

Probability

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

The _ and the _ of a set of standard scores is always equal to 1.00.

A _ standard score indicates that the original score is _ than the mean.

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 are approximately normally distributed.Nancy scores a 90 and Ronald scores a 75.The characteristics of the distribution are as follows: = 85,s² = 36.What is Ronald's z score?