Question 1

The _____ is a measure of the proportion of variance in one of the variables that is accounted for by the other variable.​

Accepted Answer

A) Spearman rank-order correlation coefficient 
B) coefficient of determination 
C) point-biserial correlation coefficient 
D) Pearson product-moment correlation coefficient 
A) Spearman rank-order correlation coefficient 
B) coefficient of determination 
C) point-biserial correlation coefficient 
D) Pearson product-moment correlation coefficient

Question 2

If the points on a scatterplot are spread all over the graph, this would suggest that the two variables depicted are

Accepted Answer

A) normally distributed. 
B) positively correlated. 
C) strongly related. 
D) not correlated. 
A) normally distributed. 
B) positively correlated. 
C) strongly related. 
D) not correlated.

Question 3

A correlation coefficient of 0.00 is to _____ as a correlation coefficient of -1.00 is to _____.​

Accepted Answer

A) no relationship; weak relationship 
B) no relationship; perfect relationship 
C) weak relationship; no relationship 
D) perfect relationship; no relationship 
A) no relationship; weak relationship 
B) no relationship; perfect relationship 
C) weak relationship; no relationship 
D) perfect relationship; no relationship

Question 4

Explain when each of the correlation coefficients listed below should be used.​

Accepted Answer

​
· point-biserial correlation

Question 5

A variable that is truncated and has limited variability is said to have _____.

Accepted Answer

A) directionality 
B) a third variable 
C) causality 
D) a restricted range 
A) directionality 
B) a third variable 
C) causality 
D) a restricted range

Question 6

A correlation coefficient of +1.00 is to _____ as a correlation coefficient of -1.00 is to _____.​

Accepted Answer

A) perfect relationship; perfect relationship 
B) perfect relationship; no relationship 
C) straight linear relationship; curvilinear relationship 
D) curvilinear relationship; straight linear relationship 
A) perfect relationship; perfect relationship 
B) perfect relationship; no relationship 
C) straight linear relationship; curvilinear relationship 
D) curvilinear relationship; straight linear relationship

Question 7

Assume that the regression equation for the relationship between SAT scores and IQ scores is y=9 + 0.105x. What would you expect the IQ score to be for the following individuals given their SAT scores?​

Accepted Answer

The answer of Assume that the regression equation for the...

Question 8

Two interval/ratio variables are to _____ coefficient as one interval/ratio variable and one nominal variable are to _____ coefficient.​

Accepted Answer

A) Pearson product-moment correlation; Spearman rank-order correlation 
B) Spearman rank-order correlation; Pearson product-moment correlation 
C) phi; Spearman rank-order correlation 
D) Pearson product-moment correlation; point-biserial correlation 
A) Pearson product-moment correlation; Spearman rank-order correlation 
B) Spearman rank-order correlation; Pearson product-moment correlation 
C) phi; Spearman rank-order correlation 
D) Pearson product-moment correlation; point-biserial correlation

Question 9

If the points on a scatterplot are clustered in a pattern that extends from the lower left to the upper right, this would suggest that the two variables depicted are​

Accepted Answer

A) normally distributed. 
B) positively correlated. 
C) regressing toward the average. 
D) negatively correlated. 
A) normally distributed. 
B) positively correlated. 
C) regressing toward the average. 
D) negatively correlated.

Question 10

_____ is a procedure which allows us to predict an individual's score on one variable based on knowing one or more other variables.

Accepted Answer

A) Pearson product-moment correlation coefficient 
B) Coefficient of determination 
C) Regression analyses 
D) Point-biserial correlation coefficient 
A) Pearson product-moment correlation coefficient 
B) Coefficient of determination 
C) Regression analyses 
D) Point-biserial correlation coefficient

Question 11

A correlation coefficient of _____ indicates that the variables form a perfect linear relationship.​

Accepted Answer

A) +1.00 
B) ‑1.00 
C) 0.00 
D) both +1.00 and -1.00 
A) +1.00 
B) ‑1.00 
C) 0.00 
D) both +1.00 and -1.00

Question 12

What is a person-who argument?​

Accepted Answer

​A person-who argument is argu

Question 13

In a recent study it was found that the correlation between self-esteem and depression was ‑0.64. Tom interprets this to mean that low levels of self-esteem lead to high levels of depression and vice versa. How is Tom misinterpreting these data?

Accepted Answer

​Tom is assuming both causality-that one

Question 14

When there is a _____ relationship, as scores on X increase, scores on Y also increase.​

Accepted Answer

A) positive 
B) negative 
C) curvilinear 
D) zero 
A) positive 
B) negative 
C) curvilinear 
D) zero

Question 15

General State University recently decided to discontinue its use of the GRE as an admissions tool for its graduate programs because they observed no correlation between GRE scores and subsequent GPAs. Ninety percent of the grades awarded in the graduate programs at General State University are A's. What General State has failed to consider in this situation is the issue of​

Accepted Answer

A) curvilinear relationships.​ 
B) causality. 
C) the third-variable problem. 
D) restrictive range. 
A) curvilinear relationships.​ 
B) causality. 
C) the third-variable problem. 
D) restrictive range.

Question 16

Which of the following correlation coefficients represents the variables with the strongest degree of relationship?​

Accepted Answer

A) +0.99 
B) ‑1.00 
C) +0.01 
D) ‑0.59 
A) +0.99 
B) ‑1.00 
C) +0.01 
D) ‑0.59

Question 17

Suppose that the correlation between height and weight for adults is +0.75. What proportion (or percent) of the variability in weight is accounted for by the relationship with height?​

Accepted Answer

A) 75% 
B) 25% 
C) 56% 
D) unable to determine 
A) 75% 
B) 25% 
C) 56% 
D) unable to determine

Question 18

Jim thought that the strong negative correlation that he observed between depression and self-esteem meant that having a low self-esteem led to high levels of depression. Jim is misinterpreting the correlation by assuming​

Accepted Answer

A) causality. 
B) directionality. 
C) that there is a third variable. 
D) both causality and directionality. 
A) causality. 
B) directionality. 
C) that there is a third variable. 
D) both causality and directionality.

The _____ is a measure of the proportion of variance in one of the variables that is accounted for by the other variable.

If the points on a scatterplot are spread all over the graph, this would suggest that the two variables depicted are

A correlation coefficient of 0.00 is to _ as a correlation coefficient of -1.00 is to _.

Explain when each of the correlation coefficients listed below should be used.

A variable that is truncated and has limited variability is said to have _____.

A correlation coefficient of +1.00 is to _ as a correlation coefficient of -1.00 is to _.

Assume that the regression equation for the relationship between SAT scores and IQ scores is y=9 + 0.105x. What would you expect the IQ score to be for the following individuals given their SAT scores?

Two interval/ratio variables are to _ coefficient as one interval/ratio variable and one nominal variable are to _ coefficient.

If the points on a scatterplot are clustered in a pattern that extends from the lower left to the upper right, this would suggest that the two variables depicted are

_____ is a procedure which allows us to predict an individual's score on one variable based on knowing one or more other variables.

A correlation coefficient of _____ indicates that the variables form a perfect linear relationship.

What is a person-who argument?

In a recent study it was found that the correlation between self-esteem and depression was ‑0.64. Tom interprets this to mean that low levels of self-esteem lead to high levels of depression and vice versa. How is Tom misinterpreting these data?

When there is a _____ relationship, as scores on X increase, scores on Y also increase.

Which of the following correlation coefficients represents the variables with the strongest degree of relationship?

Suppose that the correlation between height and weight for adults is +0.75. What proportion (or percent) of the variability in weight is accounted for by the relationship with height?

Jim thought that the strong negative correlation that he observed between depression and self-esteem meant that having a low self-esteem led to high levels of depression. Jim is misinterpreting the correlation by assuming

Thinking Like a Scientist

Getting Started

Defining Measuring and Manipulating Variables

Descriptive Methods

Data Organization and Descriptive Statistics

Probability and Hypothesis Testing

Introduction to Inferential Statistics

Experimental Design and Analysis I

Experimental Design and Analysis II

Experimental Design and Analysis III

Experimental Design and Analysis Iv

Quasi Experimental and Single Case Designs

Nonparametric Inferential Statistics

APA Communication Guidelines

Filters

Exam 6: Correlational Methods and Statistics

The _____ is a measure of the proportion of variance in one of the variables that is accounted for by the other variable.​

If the points on a scatterplot are spread all over the graph, this would suggest that the two variables depicted are

A correlation coefficient of 0.00 is to _____ as a correlation coefficient of -1.00 is to _____.​

Explain when each of the correlation coefficients listed below should be used.​

A variable that is truncated and has limited variability is said to have _____.

A correlation coefficient of +1.00 is to _____ as a correlation coefficient of -1.00 is to _____.​

Assume that the regression equation for the relationship between SAT scores and IQ scores is y=9 + 0.105x. What would you expect the IQ score to be for the following individuals given their SAT scores?​

Two interval/ratio variables are to _____ coefficient as one interval/ratio variable and one nominal variable are to _____ coefficient.​

If the points on a scatterplot are clustered in a pattern that extends from the lower left to the upper right, this would suggest that the two variables depicted are​

_____ is a procedure which allows us to predict an individual's score on one variable based on knowing one or more other variables.

A correlation coefficient of _____ indicates that the variables form a perfect linear relationship.​

What is a person-who argument?​

In a recent study it was found that the correlation between self-esteem and depression was ‑0.64. Tom interprets this to mean that low levels of self-esteem lead to high levels of depression and vice versa. How is Tom misinterpreting these data?

When there is a _____ relationship, as scores on X increase, scores on Y also increase.​

Which of the following correlation coefficients represents the variables with the strongest degree of relationship?​

Suppose that the correlation between height and weight for adults is +0.75. What proportion (or percent) of the variability in weight is accounted for by the relationship with height?​

Jim thought that the strong negative correlation that he observed between depression and self-esteem meant that having a low self-esteem led to high levels of depression. Jim is misinterpreting the correlation by assuming​

Thinking Like a Scientist

Getting Started

Defining Measuring and Manipulating Variables

Descriptive Methods

Data Organization and Descriptive Statistics

Probability and Hypothesis Testing

Introduction to Inferential Statistics

Experimental Design and Analysis I

Experimental Design and Analysis II

Experimental Design and Analysis III

Experimental Design and Analysis Iv

Quasi Experimental and Single Case Designs

Nonparametric Inferential Statistics

APA Communication Guidelines

Filters

The _____ is a measure of the proportion of variance in one of the variables that is accounted for by the other variable.

A correlation coefficient of 0.00 is to _ as a correlation coefficient of -1.00 is to _.

Explain when each of the correlation coefficients listed below should be used.

A correlation coefficient of +1.00 is to _ as a correlation coefficient of -1.00 is to _.

Assume that the regression equation for the relationship between SAT scores and IQ scores is y=9 + 0.105x. What would you expect the IQ score to be for the following individuals given their SAT scores?

Two interval/ratio variables are to _ coefficient as one interval/ratio variable and one nominal variable are to _ coefficient.

If the points on a scatterplot are clustered in a pattern that extends from the lower left to the upper right, this would suggest that the two variables depicted are

A correlation coefficient of _____ indicates that the variables form a perfect linear relationship.

What is a person-who argument?

When there is a _____ relationship, as scores on X increase, scores on Y also increase.

Which of the following correlation coefficients represents the variables with the strongest degree of relationship?

Suppose that the correlation between height and weight for adults is +0.75. What proportion (or percent) of the variability in weight is accounted for by the relationship with height?

Jim thought that the strong negative correlation that he observed between depression and self-esteem meant that having a low self-esteem led to high levels of depression. Jim is misinterpreting the correlation by assuming