Question 1

Which of the following indicates a very significant correlation?

Accepted Answer

A) p = 0.05 
B) p < 0.05 
C) p < 0.01 
D) p < 0.50 
A) p = 0.05 
B) p < 0.05 
C) p < 0.01 
D) p < 0.50

Question 2

If a simple Pearson correlation value = 0.362,what percentage of variance is unaccounted for?

Accepted Answer

A) 25% 
B) 36% 
C) 56% 
D) 87% 
A) 25% 
B) 36% 
C) 56% 
D) 87%

Question 3

The research hypothesis posits that the more caffeine consumed by a subject,the longer a subject will stay awake (H1: rxy > 0).What would be concluded for r(10)= 0.653,p < 0.05?

Accepted Answer

The obtained value (0.653)is greater tha

Question 4

If the accounted variance is 24.2%,what is the correlation between the two variables?

Accepted Answer

A) 24.6% 
B) 49.2% 
C) 50.4% 
D) 75.4% 
A) 24.6% 
B) 49.2% 
C) 50.4% 
D) 75.4%

Question 5

The research hypothesis posits that the relationship between two variables will be greater than 0 (H1: rxy > 0).What would be concluded for r(29)= 0.467,p < 0.05?

Accepted Answer

The obtained value (0.467)is greater tha

Question 6

If two variables are significantly correlated,this means that one variable causes the other.

Accepted Answer

A) True 
 B)False

Question 7

When the research hypothesis posits that there is a nondirect relationship between two variables,the test is ______.

Accepted Answer

A) one-tailed 
B) two-tailed 
C) negative 
D) nondirectional 
A) one-tailed 
B) two-tailed 
C) negative 
D) nondirectional

Question 8

The appropriate test statistic to use is the t test for the correlation coefficient.

Accepted Answer

A) True 
 B)False

Question 9

Significant correlations cannot indicate ______.

Accepted Answer

A) the probability level 
B) the size of the effect 
C) the strength of the effect 
D) causality 
A) the probability level 
B) the size of the effect 
C) the strength of the effect 
D) causality

Question 10

Correlations can ______.

Accepted Answer

A) be directional or nondirectional 
B) be only directional 
C) be only nondirectional 
D) neither be directional nor nondirectional 
A) be directional or nondirectional 
B) be only directional 
C) be only nondirectional 
D) neither be directional nor nondirectional

Question 11

What do correlation coefficients examine?

Accepted Answer

A) differences between two groups 
B) differences between two or more groups 
C) the relationship between variables 
D) how variables can be arranged into higher-order factors 
A) differences between two groups 
B) differences between two or more groups 
C) the relationship between variables 
D) how variables can be arranged into higher-order factors

Question 12

If the correlation between two variables is 0.496,what is the coefficient of determination?

Accepted Answer

A) 0.246 
B) 0.496 
C) 0.504 
D) 0.754 
A) 0.246 
B) 0.496 
C) 0.504 
D) 0.754

Question 13

If a simple Pearson correlation value = 0.685,what percentage of variance is accounted for?

Accepted Answer

A) 35% 
B) 47% 
C) 68% 
D) 69% 
A) 35% 
B) 47% 
C) 68% 
D) 69%

Question 14

Correlation coefficients examine the relationship between variables.

Accepted Answer

A) True 
 B)False

Question 15

If the correlation between two variables is 0.876,how much of the variance has been accounted for?

Accepted Answer

A) 24.6% 
B) 49.6% 
C) 59.1% 
D) 76.7% 
A) 24.6% 
B) 49.6% 
C) 59.1% 
D) 76.7%

Question 16

A researcher hypothesizes that there will be a positive relationship between couples' listening skills and length of marriage.The researcher has a ______.

Accepted Answer

A) one-tailed hypothesis 
B) invalid hypothesis 
C) valid hypothesis 
D) two-tailed hypothesis 
A) one-tailed hypothesis 
B) invalid hypothesis 
C) valid hypothesis 
D) two-tailed hypothesis

Question 17

If a research hypothesis posits that there is a direct relationship between two variables,the test is ______.

Accepted Answer

A) one-tailed 
B) two-tailed 
C) negative 
D) nondirectional 
A) one-tailed 
B) two-tailed 
C) negative 
D) nondirectional

Question 18

A single correlation can be computed in order to determine the relationship between three variables.

Accepted Answer

A) True 
 B)False

Question 19

The statement rxy $\neq$ 0 represents ______.

Accepted Answer

A) the null hypothesis 
B) the t statistic 
C) the mean difference 
D) the research hypothesis 
A) the null hypothesis 
B) the t statistic 
C) the mean difference 
D) the research hypothesis

Question 20

A significant correlation indicates a meaningful relationship.

Accepted Answer

A) True 
 B)False

Which of the following indicates a very significant correlation?

If a simple Pearson correlation value = 0.362,what percentage of variance is unaccounted for?

The research hypothesis posits that the more caffeine consumed by a subject,the longer a subject will stay awake (H₁: r_xy > 0).What would be concluded for r₍₁₀₎= 0.653,p < 0.05?

If the accounted variance is 24.2%,what is the correlation between the two variables?

The research hypothesis posits that the relationship between two variables will be greater than 0 (H₁: r_xy > 0).What would be concluded for r₍₂₉₎= 0.467,p < 0.05?

If two variables are significantly correlated,this means that one variable causes the other.

When the research hypothesis posits that there is a nondirect relationship between two variables,the test is ______.

The appropriate test statistic to use is the t test for the correlation coefficient.

Significant correlations cannot indicate ______.

Correlations can ______.

What do correlation coefficients examine?

If the correlation between two variables is 0.496,what is the coefficient of determination?

If a simple Pearson correlation value = 0.685,what percentage of variance is accounted for?

Correlation coefficients examine the relationship between variables.

If the correlation between two variables is 0.876,how much of the variance has been accounted for?

A researcher hypothesizes that there will be a positive relationship between couples' listening skills and length of marriage.The researcher has a ______.

If a research hypothesis posits that there is a direct relationship between two variables,the test is ______.

A single correlation can be computed in order to determine the relationship between three variables.

The statement r_xy $\neq$ 0 represents ______.

A significant correlation indicates a meaningful relationship.

Statistics or Sadistics Its up to You

Means to an End: Computing and Understanding Averages

Understanding Variability: Vive La Différence

A Picture Really Is Worth a Thousand Words

Computing Correlation Coefficients: Ice Cream and Crime

Understanding Reliability and Validity: Just the Truth

Hypotheticals and You: Testing Your Questions

Probability and Why It Counts: Fun With a Bell-Shaped Curve

Significantly Significant: What It Means for You and Me

Only the Lonely: the One Sample Z-Test

Teafor Two: Tests Between the Means of Different Groups

Teafor Two Again: Tests Between the Means of Related Groups

Two Groups Too Many Try Analysis of Variance

Two Too Many Factors: Factorial Analysis of Variancea Brief Introduction

Using Linear Regression: Predicting Wholl Win the Super Bowl

Chi-Square and Some Other Nonparametric Tests: What to Do When Youre Not Normal

Some Other Importantstatistical Procedures You Should Know About

An Introduction to Data Mining

Filters

Exam 15: Testing Relationships Using the Correlation Coefficients: Cousins or Just Good Friends

Which of the following indicates a very significant correlation?

If a simple Pearson correlation value = 0.362,what percentage of variance is unaccounted for?

The research hypothesis posits that the more caffeine consumed by a subject,the longer a subject will stay awake (H1: rxy > 0).What would be concluded for r(10)= 0.653,p < 0.05?

If the accounted variance is 24.2%,what is the correlation between the two variables?

The research hypothesis posits that the relationship between two variables will be greater than 0 (H1: rxy > 0).What would be concluded for r(29)= 0.467,p < 0.05?

If two variables are significantly correlated,this means that one variable causes the other.

When the research hypothesis posits that there is a nondirect relationship between two variables,the test is ______.

The appropriate test statistic to use is the t test for the correlation coefficient.

Significant correlations cannot indicate ______.

Correlations can ______.

What do correlation coefficients examine?

If the correlation between two variables is 0.496,what is the coefficient of determination?

If a simple Pearson correlation value = 0.685,what percentage of variance is accounted for?

Correlation coefficients examine the relationship between variables.

If the correlation between two variables is 0.876,how much of the variance has been accounted for?

A researcher hypothesizes that there will be a positive relationship between couples' listening skills and length of marriage.The researcher has a ______.

If a research hypothesis posits that there is a direct relationship between two variables,the test is ______.

A single correlation can be computed in order to determine the relationship between three variables.

The statement rxy ≠\neq= 0 represents ______.

A significant correlation indicates a meaningful relationship.

Statistics or Sadistics Its up to You

Means to an End: Computing and Understanding Averages

Understanding Variability: Vive La Différence

A Picture Really Is Worth a Thousand Words

Computing Correlation Coefficients: Ice Cream and Crime

Understanding Reliability and Validity: Just the Truth

Hypotheticals and You: Testing Your Questions

Probability and Why It Counts: Fun With a Bell-Shaped Curve

Significantly Significant: What It Means for You and Me

Only the Lonely: the One Sample Z-Test

Teafor Two: Tests Between the Means of Different Groups

Teafor Two Again: Tests Between the Means of Related Groups

Two Groups Too Many Try Analysis of Variance

Two Too Many Factors: Factorial Analysis of Variancea Brief Introduction

Using Linear Regression: Predicting Wholl Win the Super Bowl

Chi-Square and Some Other Nonparametric Tests: What to Do When Youre Not Normal

Some Other Importantstatistical Procedures You Should Know About

An Introduction to Data Mining

Filters

The research hypothesis posits that the more caffeine consumed by a subject,the longer a subject will stay awake (H₁: r_xy > 0).What would be concluded for r₍₁₀₎= 0.653,p < 0.05?

The research hypothesis posits that the relationship between two variables will be greater than 0 (H₁: r_xy > 0).What would be concluded for r₍₂₉₎= 0.467,p < 0.05?

The statement r_xy $\neq$ 0 represents ______.