Question 1

Suppose you want to grade a class on the "normal curve." What characteristic of the distribution are you most concerned about?

Accepted Answer

A)  The typical score earned 
B)  The 16th percentile 
C)  The class mean 
D)  The degree of skewness in the class distribution 
E)  The 50th percentile 
A)  The typical score earned 
B)  The 16th percentile 
C)  The class mean 
D)  The degree of skewness in the class distribution 
E)  The 50th percentile

Question 2

On which test did Shawn do best?

Accepted Answer

A)  Test one: Shawn scored exactly at the mean. 
B)  Test two: Shawn's score was a z-score of -1.2. 
C)  Test three: Shawn's score was a T-score of 47. 
D)  Test four: Shawn's score was a percentile of 38. 
A)  Test one: Shawn scored exactly at the mean. 
B)  Test two: Shawn's score was a z-score of -1.2. 
C)  Test three: Shawn's score was a T-score of 47. 
D)  Test four: Shawn's score was a percentile of 38.

Question 3

In a normal distribution with a mean of 50 and a standard deviation of 7.5, what is the value of the mode?

Accepted Answer

A)  42.5 
B)  50 
C)  57.5 
D)  Not possible to determine from the information given. 
A)  42.5 
B)  50 
C)  57.5 
D)  Not possible to determine from the information given.

Question 4

Suppose a normal distribution has a standard deviation of 15. Judy has a raw score of 120 and a z-score of .5. What is the mean of the distribution?

Accepted Answer

A)  -127.5 
B)  -112.5 
C)  +112.5 
D)  +127.5 
A)  -127.5 
B)  -112.5 
C)  +112.5 
D)  +127.5

Question 5

If the variance is 121, and the 16th percentile is 988, which of the following is probably the mean?

Accepted Answer

A)  995 
B)  999 
C)  1000 
D)  1005 
E)  1009 
A)  995 
B)  999 
C)  1000 
D)  1005 
E)  1009

Question 6

Which of the following is a discrete variable?

Accepted Answer

A)  Temperature 
B)  Time 
C)  Number of cars in the parking lot 
D)  Body weight 
A)  Temperature 
B)  Time 
C)  Number of cars in the parking lot 
D)  Body weight

Suppose you want to grade a class on the "normal curve." What characteristic of the distribution are you most concerned about?

On which test did Shawn do best?

In a normal distribution with a mean of 50 and a standard deviation of 7.5, what is the value of the mode?

Suppose a normal distribution has a standard deviation of 15. Judy has a raw score of 120 and a z-score of .5. What is the mean of the distribution?

If the variance is 121, and the 16th percentile is 988, which of the following is probably the mean?

Which of the following is a discrete variable?

Research Methods

Introduction to Measurement and Statistics

Descriptive Statistics

Correlation and Regression

Introduction to Inferential Statistics

Two-Sample T-Test

Issues in Inferential Statistics

One-Way Between-Groups Anova

One-Way Within-Groups Anova

Factorial Anova

Multivariate Anova Manova

Advanced Statistics

Nonparametric Statistics

Filters

Exam 4: The Normal Curve and Standard Scores

Suppose you want to grade a class on the "normal curve." What characteristic of the distribution are you most concerned about?

On which test did Shawn do best?

In a normal distribution with a mean of 50 and a standard deviation of 7.5, what is the value of the mode?

Suppose a normal distribution has a standard deviation of 15. Judy has a raw score of 120 and a z-score of .5. What is the mean of the distribution?

If the variance is 121, and the 16th percentile is 988, which of the following is probably the mean?

Which of the following is a discrete variable?

Research Methods

Introduction to Measurement and Statistics

Descriptive Statistics

Correlation and Regression

Introduction to Inferential Statistics

Two-Sample T-Test

Issues in Inferential Statistics

One-Way Between-Groups Anova

One-Way Within-Groups Anova

Factorial Anova

Multivariate Anova Manova

Advanced Statistics

Nonparametric Statistics

Filters