Question 1

For a correlation of .5, the proportion of variance of one variable that is shared with the other variable is:

Accepted Answer

A) 25% 
B) 50% 
C) 55% 
D) 60% 
A) 25% 
B) 50% 
C) 55% 
D) 60%

Question 2

Multiplying a person's Z score on one variable by the person's Z score on another variable creates what is called a(n)__________ of Z scores.

Accepted Answer

The answer of Multiplying a person's Z score on one...

Question 3

Which of the following is NOT usually included in a results section for correlation?

Accepted Answer

A) The value of r 
B) The significance level 
C) The Z scores 
D) A correlation matrix 
A) The value of r 
B) The significance level 
C) The Z scores 
D) A correlation matrix

Question 4

The association of a criterion variable with two or more predictor variables is __________. Making predictions in this situation is called __________.

Accepted Answer

A) positive correlation, positive regression 
B) negative correlation, negative regression 
C) multiple regression, multiple correlation 
D) multiple correlation, multiple regression 
A) positive correlation, positive regression 
B) negative correlation, negative regression 
C) multiple regression, multiple correlation 
D) multiple correlation, multiple regression

Question 5

For a positive linear correlation that is not perfect, the average of the cross-products of Z scores is between:

Accepted Answer

A) -1 and 0 
B) 0 and .5 
C) -.5 and .5 
D) 0 and 1 
A) -1 and 0 
B) 0 and .5 
C) -.5 and .5 
D) 0 and 1

Question 6

If playing video games and aggression are correlated, what are three possible directions of causality that might explain this correlation?

Accepted Answer

Playing video games can cause a person t

Question 7

A scatter diagram shows a pattern in which the dots go roughly straight across and then about halfway across start going down. This is an example of a(n)__________ correlation.

Accepted Answer

curvilinea

Question 8

When asterisks are used in a correlation matrix, they typically represent:

Accepted Answer

A) standardized regression coefficients 
B) multivariate scatter diagrams 
C) level of statistical significance 
D) various predicted values 
A) standardized regression coefficients 
B) multivariate scatter diagrams 
C) level of statistical significance 
D) various predicted values

Question 9

In a scatter diagram, the predictor variable goes on the __________ axis.

Accepted Answer

The answer of In a scatter diagram, the predictor variable...

Question 10

A(n)__________ is a graphic display of the pattern of relationship between two variables.

Accepted Answer

The answer of A(n)__________ is a graphic display of the...

Question 11

Students currently in a romantic relationship rated how important each of four different aspects of their relationship was to them. The article reporting the results included the following correlation matrix:
   _____________________________________________________________
Note. *p < .05; **p < .01
a. The strongest correlation occurred between which two variables?
b. The weakest correlation occurred between which two variables?
c. Which associations between variables were statistically significant and how strong were these associations?
d. In your own words, describe the overall pattern of findings from this study.

Accepted Answer

a. Strongest = companionship and intimac

Question 12

The correlation coefficient is abbreviated by the letter r, which stands for:

Accepted Answer

A) relation 
B) resistance 
C) relative distance 
D) regression 
A) relation 
B) resistance 
C) relative distance 
D) regression

Question 13

A scatter diagram in which the dots form a kind of upside-down "U" shape is an example of a(n)__________ correlation.

Accepted Answer

curvilinea

Question 14

A student applying to your graduate program in psychology has a GRE score that is 2.5 standard deviations above the mean. Suppose that the beta in a particular situation for predicting graduate school GPA from GRE scores is .6. What will be this person's predicted Z score for graduate school GPA?

Accepted Answer

A) .25 
B) 1.5 
C) 2.5 
D) 2.7 
A) .25 
B) 1.5 
C) 2.5 
D) 2.7

Question 15

When a research article reports r = .35, p < .05, the "p < .05" means that the result is statistically __________.

Accepted Answer

The answer of When a research article reports r =...

Question 16

In a perfect linear correlation, the dots in a scatter diagram all fall __________.

Accepted Answer

The answer of In a perfect linear correlation, the dots...

For a correlation of .5, the proportion of variance of one variable that is shared with the other variable is:

Multiplying a person's Z score on one variable by the person's Z score on another variable creates what is called a(n)__________ of Z scores.

Which of the following is NOT usually included in a results section for correlation?

The association of a criterion variable with two or more predictor variables is . Making predictions in this situation is called .

For a positive linear correlation that is not perfect, the average of the cross-products of Z scores is between:

If playing video games and aggression are correlated, what are three possible directions of causality that might explain this correlation?

A scatter diagram shows a pattern in which the dots go roughly straight across and then about halfway across start going down. This is an example of a(n)__________ correlation.

When asterisks are used in a correlation matrix, they typically represent:

In a scatter diagram, the predictor variable goes on the __________ axis.

A(n)__________ is a graphic display of the pattern of relationship between two variables.

The correlation coefficient is abbreviated by the letter r, which stands for:

A scatter diagram in which the dots form a kind of upside-down "U" shape is an example of a(n)__________ correlation.

A student applying to your graduate program in psychology has a GRE score that is 2.5 standard deviations above the mean. Suppose that the beta in a particular situation for predicting graduate school GPA from GRE scores is .6. What will be this person's predicted Z score for graduate school GPA?

When a research article reports r = .35, p < .05, the "p < .05" means that the result is statistically __________.

In a perfect linear correlation, the dots in a scatter diagram all fall __________.

Displaying the Order in a Group of Numbers Using Tables and Graphs

The Mean, Variance, Standard Deviation, and Z Scores

Some Key Ingredients for Inferential Statistics: the Normal Curve, Sample Versus Population, and Probability

Introduction to Hypothesis Testing

Hypothesis Tests With Means of Samples

Making Sense of Statistical Significance: Effect Size and Statistical Power

Introduction to the T Test: Single Sample and Dependent Means

The T Test for Independent Means

Introduction to the Analysis of Variance

Chi-Square Tests and Strategies When Population Distributions Are Not Normal

Applying Statistical Methods in Your Own Research Project

Filters

Exam 3: Correlation and Prediction

For a correlation of .5, the proportion of variance of one variable that is shared with the other variable is:

Multiplying a person's Z score on one variable by the person's Z score on another variable creates what is called a(n)__________ of Z scores.

Which of the following is NOT usually included in a results section for correlation?

The association of a criterion variable with two or more predictor variables is __________. Making predictions in this situation is called __________.

For a positive linear correlation that is not perfect, the average of the cross-products of Z scores is between:

If playing video games and aggression are correlated, what are three possible directions of causality that might explain this correlation?

A scatter diagram shows a pattern in which the dots go roughly straight across and then about halfway across start going down. This is an example of a(n)__________ correlation.

When asterisks are used in a correlation matrix, they typically represent:

In a scatter diagram, the predictor variable goes on the __________ axis.

A(n)__________ is a graphic display of the pattern of relationship between two variables.

The correlation coefficient is abbreviated by the letter r, which stands for:

A scatter diagram in which the dots form a kind of upside-down "U" shape is an example of a(n)__________ correlation.

A student applying to your graduate program in psychology has a GRE score that is 2.5 standard deviations above the mean. Suppose that the beta in a particular situation for predicting graduate school GPA from GRE scores is .6. What will be this person's predicted Z score for graduate school GPA?

When a research article reports r = .35, p < .05, the "p < .05" means that the result is statistically __________.

In a perfect linear correlation, the dots in a scatter diagram all fall __________.

Displaying the Order in a Group of Numbers Using Tables and Graphs

The Mean, Variance, Standard Deviation, and Z Scores

Some Key Ingredients for Inferential Statistics: the Normal Curve, Sample Versus Population, and Probability

Introduction to Hypothesis Testing

Hypothesis Tests With Means of Samples

Making Sense of Statistical Significance: Effect Size and Statistical Power

Introduction to the T Test: Single Sample and Dependent Means

The T Test for Independent Means

Introduction to the Analysis of Variance

Chi-Square Tests and Strategies When Population Distributions Are Not Normal

Applying Statistical Methods in Your Own Research Project

Filters

The association of a criterion variable with two or more predictor variables is . Making predictions in this situation is called .