Question 1

Refer to the following data set.  
What is the slope of the regression line?

Accepted Answer

A) 14 
B) 1.8 
C) 22 
D) 5 
A) 14 
B) 1.8 
C) 22 
D) 5

Question 2

Suppose you were interested in conducting a study examining how ratings of similarity between oneself and another person were related to how attracted one is to the other person.You conduct this study by giving participants a description of a person named "Sarah." Participants are asked to read the description and then rate on a scale from 1 to 10 how similar Sarah is to themselves.You also ask each participant to rate on a scale from 1 to 20 how likeable they think Sarah is.
X = rating of similarity of target to oneself
Y = rating of likability of the target ("Sarah")
62 people participate in your study,and you obtain the following data:   
= 6.00 SCP = 66   
= 10.00 SSX = 40
SSY = 136
Calculate the slope for the regression equation for the above data.

Accepted Answer

Question 3

Which correlation coefficient most closely represents the relationship depicted in the scatterplot below?

Accepted Answer

A) .75 
B) .35 
C) .02 
D) -.44 
A) .75 
B) .35 
C) .02 
D) -.44

Question 4

What is restricted range and how does it affect the correlation coefficient?

Accepted Answer

Restricted range involves examining only

Question 5

The regression equation for predicting X from Y is not the same as the regression equation for predicting Y from X.

Accepted Answer

A) True 
 B)False

Question 6

The technique which minimizes the squared vertical distances from the regression line to the data points is called the _____.

Accepted Answer

A) correlation line 
B) method of least squares 
C) slope minimization technique 
D) truncation of range technique 
A) correlation line 
B) method of least squares 
C) slope minimization technique 
D) truncation of range technique

Question 7

Pearson correlation is an appropriate statistic for a nonlinear relationship.

Accepted Answer

A) True 
 B)False

Question 8

Researchers were recently surprised to learn that the correlation between the type of clothing people wear when they are not working and the type of jobs they hold is approximately zero.Based on this,we can conclude that _____.

Accepted Answer

A) people with lower status jobs tend to dress worse than people with higher status jobs 
B) people with higher status jobs tend to dress better on and off the job 
C) there is no relationship between the types of clothing worn in non-work settings and the type of work that people do 
D) people with higher status jobs tend to dress worse when they are not at work 
E) people with lower status jobs tend to wear the same clothing both on and off the job 
A) people with lower status jobs tend to dress worse than people with higher status jobs 
B) people with higher status jobs tend to dress better on and off the job 
C) there is no relationship between the types of clothing worn in non-work settings and the type of work that people do 
D) people with higher status jobs tend to dress worse when they are not at work 
E) people with lower status jobs tend to wear the same clothing both on and off the job

Question 9

Which type of relationship is graphed in the following scatterplot?

Accepted Answer

A) no relationship 
B) positive curvilinear relationship 
C) negative linear relationship 
D) positive linear relationship 
A) no relationship 
B) positive curvilinear relationship 
C) negative linear relationship 
D) positive linear relationship

Question 10

The criterion for deriving the values of the slope and intercept is formally known as the least squares criterion.

Accepted Answer

A) True 
 B)False

Question 11

The Pearson correlation technique may be used to measure ______ relationships when both variables are ______ in nature.

Accepted Answer

A) curvilinear;qualitative 
B) linear;qualitative 
C) linear;quantitative 
D) curvilinear;quantitative 
A) curvilinear;qualitative 
B) linear;qualitative 
C) linear;quantitative 
D) curvilinear;quantitative

Question 12

In the case of a _____ relationship,as scores on X increase,scores on Y also increase.

Accepted Answer

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

Refer to the following data set. What is the slope of the regression line?

Which correlation coefficient most closely represents the relationship depicted in the scatterplot below?

What is restricted range and how does it affect the correlation coefficient?

The regression equation for predicting X from Y is not the same as the regression equation for predicting Y from X.

The technique which minimizes the squared vertical distances from the regression line to the data points is called the _____.

Pearson correlation is an appropriate statistic for a nonlinear relationship.

Researchers were recently surprised to learn that the correlation between the type of clothing people wear when they are not working and the type of jobs they hold is approximately zero.Based on this,we can conclude that _____.

Which type of relationship is graphed in the following scatterplot?

The criterion for deriving the values of the slope and intercept is formally known as the least squares criterion.

The Pearson correlation technique may be used to measure relationships when both variables are in nature.

In the case of a _____ relationship,as scores on X increase,scores on Y also increase.

Introduction and Mathematical Preliminaries

Frequency and Probability Distributions

Measures of Central Tendency and Variability

Percentiles,percentile Ranks,standard Scores,and the Normal Distribution

Probability

Estimation and Sampling Distributions

Hypothesis Testing: Inferences About a Single Mean

Principles of Research Design and Statistical Preliminaries for Analyzing Bivariate Relationships

Independent Groups T-Test

Correlated Groups T-Test

One-Way Repeated Measures Analysis of Variance

Pearson Correlation and Regression: Inferential Aspects

Chi-Square Test

Nonparametric Statistics

Two-Way Between-Subjects Analysis of Variance

Overview and Extension: Statistical Tests for More Complex Designs

Filters

Exam 5: Pearson Correlation and Regression: Descriptive Aspects

Refer to the following data set. What is the slope of the regression line?

Which correlation coefficient most closely represents the relationship depicted in the scatterplot below?

What is restricted range and how does it affect the correlation coefficient?

The regression equation for predicting X from Y is not the same as the regression equation for predicting Y from X.

The technique which minimizes the squared vertical distances from the regression line to the data points is called the _____.

Pearson correlation is an appropriate statistic for a nonlinear relationship.

Researchers were recently surprised to learn that the correlation between the type of clothing people wear when they are not working and the type of jobs they hold is approximately zero.Based on this,we can conclude that _____.

Which type of relationship is graphed in the following scatterplot?

The criterion for deriving the values of the slope and intercept is formally known as the least squares criterion.

The Pearson correlation technique may be used to measure ______ relationships when both variables are ______ in nature.

In the case of a _____ relationship,as scores on X increase,scores on Y also increase.

Introduction and Mathematical Preliminaries

Frequency and Probability Distributions

Measures of Central Tendency and Variability

Percentiles,percentile Ranks,standard Scores,and the Normal Distribution

Probability

Estimation and Sampling Distributions

Hypothesis Testing: Inferences About a Single Mean

Principles of Research Design and Statistical Preliminaries for Analyzing Bivariate Relationships

Independent Groups T-Test

Correlated Groups T-Test

One-Way Repeated Measures Analysis of Variance

Pearson Correlation and Regression: Inferential Aspects

Chi-Square Test

Nonparametric Statistics

Two-Way Between-Subjects Analysis of Variance

Overview and Extension: Statistical Tests for More Complex Designs

Filters

The Pearson correlation technique may be used to measure relationships when both variables are in nature.