Question 1

Principle components are found in

Accepted Answer

A)  multiple regression. 
B)  factor analysis. 
C)  discriminant analysis. 
D)  Spearman's rho. 
A)  multiple regression. 
B)  factor analysis. 
C)  discriminant analysis. 
D)  Spearman's rho.

Question 2

If the correlation between X and Y is 0 and we observe a score (in Z units)of 1.5 on X,what score would be predicted for Y?

Accepted Answer

A)  -1.5 
B)  -.75 
C)  0 
D)  1.5 
A)  -1.5 
B)  -.75 
C)  0 
D)  1.5

Question 3

X and Y correlate .2.What is the coefficient of determination of this relation?

Accepted Answer

A)  0 
B)  .04 
C)  .45 
D)  .75 
A)  0 
B)  .04 
C)  .45 
D)  .75

Question 4

Which of the following is true of the best-fitting line?

Accepted Answer

A)  It establishes statistical significance. 
B)  It increases as the correlation decreases. 
C)  It is rarely useful for prediction. 
D)  It minimizes residuals. 
A)  It establishes statistical significance. 
B)  It increases as the correlation decreases. 
C)  It is rarely useful for prediction. 
D)  It minimizes residuals.

Question 5

When you know nothing about a person's academic ability,the best estimate of his or her academic ability should be based on the

Accepted Answer

A)  mean. 
B)  Z score. 
C)  criterion. 
D)  correlation. 
A)  mean. 
B)  Z score. 
C)  criterion. 
D)  correlation.

Question 6

X and Y correlate .5.What is the coefficient of determination of this relation?

Accepted Answer

A)  0 
B)  .25 
C)  .50 
D)  .75 
A)  0 
B)  .25 
C)  .50 
D)  .75

Question 7

A factor loading is

Accepted Answer

A)  a residual. 
B)  the correlation between two principle components. 
C)  the correlation between an item and a factor. 
D)  the square root of a factor. 
A)  a residual. 
B)  the correlation between two principle components. 
C)  the correlation between an item and a factor. 
D)  the square root of a factor.

Question 8

In regression plots,a perfect forecaster of the criterion is at a(n)

Accepted Answer

A)  45 degree angle. 
B)  90 degree angle. 
C)  0 degree angle. 
D)  100 degree angle. 
A)  45 degree angle. 
B)  90 degree angle. 
C)  0 degree angle. 
D)  100 degree angle.

Question 9

The difference between the observed and predicted score is

Accepted Answer

A)  the residual. 
B)  the intercept. 
C)  the Z score. 
D)  correlation coefficient. 
A)  the residual. 
B)  the intercept. 
C)  the Z score. 
D)  correlation coefficient.

Question 10

Assume that X and Y correlate .6,are in Z-score form,and that a particular value of X is 1.What is the value of the Y residual?

Accepted Answer

A)  0 
B)  .4 
C)  .6 
D)  1 
A)  0 
B)  .4 
C)  .6 
D)  1

Question 11

Suppose you had a series of eight measures of anxiety that you administered to a sample.You would use the statistical technique referred to as ____ in order to test the hypothesis that they are all measuring the same thing (anxiety).

Accepted Answer

A)  linear regression 
B)  multiple regression 
C)  discriminant analysis 
D)  factor analysis 
A)  linear regression 
B)  multiple regression 
C)  discriminant analysis 
D)  factor analysis

Question 12

Suppose that X and Y are uncorrelated. X has a mean of 15 and Y has a mean of 19. Given a score of 14 on a particular X observation, the best prediction of Y is

Accepted Answer

A) 	0. 
B) 	15. 
C) 	19. 
D) 	indeterminate. 
A) 	0. 
B) 	15. 
C) 	19. 
D) 	indeterminate.

Question 13

Assumed that X and Y correlate .3 in a sample of 102.What is the approximate t-value used to test the significance of this relationship?

Accepted Answer

A)  0 
B)  1 
C)  2 
D)  3 
A)  0 
B)  1 
C)  2 
D)  3

Question 14

An appropriate statistical technique that one might use to see how Scholastic Aptitude Test Scores and High School Grades jointly relate to Freshman grades is

Accepted Answer

A)  linear regression. 
B)  multiple regression. 
C)  discriminant analysis. 
D)  factor analysis. 
A)  linear regression. 
B)  multiple regression. 
C)  discriminant analysis. 
D)  factor analysis.

Question 15

What is the point of least squares for the numbers 2,7,8,and 11?

Accepted Answer

A)  indeterminate 
B)  4 
C)  7 
D)  10 
A)  indeterminate 
B)  4 
C)  7 
D)  10

Question 16

People who drink caffeinated beverages tend to experience increased alertness and psychomotor activity.This demonstrates a(n)

Accepted Answer

A)  positive correlation. 
B)  negative correlation. 
C)  zero correlation. 
D)  unknown. 
A)  positive correlation. 
B)  negative correlation. 
C)  zero correlation. 
D)  unknown.

Question 17

The best-fitting straight line through a set of points in a scatter diagram is known as the

Accepted Answer

A)  regression line. 
B)  linear line. 
C)  correlation line. 
D)  perfect correlation. 
A)  regression line. 
B)  linear line. 
C)  correlation line. 
D)  perfect correlation.

Question 18

Assume that X and Y correlate .6,are in Z score form,and that a particular value of X is 1.What is the predicted value of Y?

Accepted Answer

A)  0 
B)  .4 
C)  .6 
D)  1 
A)  0 
B)  .4 
C)  .6 
D)  1

Question 19

In the linear equation Y´ = a + bX,"b" is called

Accepted Answer

A)  the slope. 
B)  the intercept. 
C)  the actual score. 
D)  the predicted score. 
A)  the slope. 
B)  the intercept. 
C)  the actual score. 
D)  the predicted score.

Question 20

If the regression between X and Y is less than perfect,

Accepted Answer

A)  predicted values of Y are relatively further from the mean of Y than observed values of X are to the mean of X. 
B)  predicted values of Y are relatively closer to the mean of Y than observed values of X are to the mean of X. 
C)  values of Y cannot be predicted from observations of X. 
D)  observed values of X are relatively closer to the mean of X than predicted values of Y are to the mean of Y. 
A)  predicted values of Y are relatively further from the mean of Y than observed values of X are to the mean of X. 
B)  predicted values of Y are relatively closer to the mean of Y than observed values of X are to the mean of X. 
C)  values of Y cannot be predicted from observations of X. 
D)  observed values of X are relatively closer to the mean of X than predicted values of Y are to the mean of Y.

Exam 3: Correlation and Regression

Principle components are found in

If the correlation between X and Y is 0 and we observe a score (in Z units)of 1.5 on X,what score would be predicted for Y?

X and Y correlate .2.What is the coefficient of determination of this relation?

Which of the following is true of the best-fitting line?

When you know nothing about a person's academic ability,the best estimate of his or her academic ability should be based on the

X and Y correlate .5.What is the coefficient of determination of this relation?

A factor loading is

In regression plots,a perfect forecaster of the criterion is at a(n)

The difference between the observed and predicted score is

Assume that X and Y correlate .6,are in Z-score form,and that a particular value of X is 1.What is the value of the Y residual?

Suppose you had a series of eight measures of anxiety that you administered to a sample.You would use the statistical technique referred to as ____ in order to test the hypothesis that they are all measuring the same thing (anxiety).

Suppose that X and Y are uncorrelated. X has a mean of 15 and Y has a mean of 19. Given a score of 14 on a particular X observation, the best prediction of Y is

Assumed that X and Y correlate .3 in a sample of 102.What is the approximate t-value used to test the significance of this relationship?

An appropriate statistical technique that one might use to see how Scholastic Aptitude Test Scores and High School Grades jointly relate to Freshman grades is

What is the point of least squares for the numbers 2,7,8,and 11?

People who drink caffeinated beverages tend to experience increased alertness and psychomotor activity.This demonstrates a(n)

The best-fitting straight line through a set of points in a scatter diagram is known as the

Assume that X and Y correlate .6,are in Z score form,and that a particular value of X is 1.What is the predicted value of Y?

In the linear equation Y´ = a + bX,"b" is called

If the regression between X and Y is less than perfect,

Introduction

Norms and Basic Statistics for Testing

Reliability

Validity

Writing and Evaluating Test Items

Test Administration

Interviewing Techniques

Theories of Intelligence and the Binet Scales

The Wechsler Intelligence Scales: Wais-Iv, wisc-Iv, and Wppsi-Iii

Other Individual Tests of Ability in Education and Special Education

Standardized Tests in Education, civil Service, and the Military

Applications in Clinical and Counseling Settings

Projective Personality Tests

Computers and Basic Psychological Science in Testing

Testing in Counseling Psychology

Testing in Health Psychology and Health Care

Testing in Industrial and Business Settings

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Testing and the Law

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