Question 1

For a perfect positive linear relationship,the z scores for the X and Y variables will tend to have _____.

Accepted Answer

A) opposite signs 
B) all negative signs 
C) only positive signs 
D) the same positive or negative signs 
A) opposite signs 
B) all negative signs 
C) only positive signs 
D) the same positive or negative signs

Question 2

A scatterplot primarily is intended to show

Accepted Answer

A) the relationship between X and Y scores. 
B) the frequencies of X and Y scores. 
C) the correlation of X scores. 
D) the correlation of Y scores. 
A) the relationship between X and Y scores. 
B) the frequencies of X and Y scores. 
C) the correlation of X scores. 
D) the correlation of Y scores.

Question 3

When standard scores are used to calculate the regression equation,the intercept will always equal _____ and the slope will always equal _____.

Accepted Answer

A) 1.0;the correlation coefficient 
B) 0;the correlation coefficient 
C) 1.0;0 
D) 0;1.0 
A) 1.0;the correlation coefficient 
B) 0;the correlation coefficient 
C) 1.0;0 
D) 0;1.0

Question 4

There seems to be a negative correlation between the number of errors made on an exam and the level of satisfaction with performance.What does this mean?

Accepted Answer

A) a high level of satisfaction with performance causes more errors on an exam 
B) a low level of satisfaction with performance causes more errors on an exam 
C) there is a tendency for those with a high level of satisfaction with performance to have made more errors on an exam 
D) there is a tendency for those with a low level of satisfaction with performance to have made more errors on an exam 
A) a high level of satisfaction with performance causes more errors on an exam 
B) a low level of satisfaction with performance causes more errors on an exam 
C) there is a tendency for those with a high level of satisfaction with performance to have made more errors on an exam 
D) there is a tendency for those with a low level of satisfaction with performance to have made more errors on an exam

Question 5

Refer to the following data set.
Individual X Y
1 2 4 SCP = 80
2 4 8 SSY = 160
3 6 1 SSX = 40
4 8 16
5 10 20
The correlation coefficient for the above is ______.

Accepted Answer

A) r=.75 
B) r=-1.00 
C) 1.00 
D) 0.00 
A) r=.75 
B) r=-1.00 
C) 1.00 
D) 0.00

Question 6

Which of the following linear relationships describes a situation in which the value of one variable decreases as the value of the second variable also decreases?

Accepted Answer

A) -.66 
B) .42 
C) 1.10 
D) -1.00 
A) -.66 
B) .42 
C) 1.10 
D) -1.00

Question 7

When the correlation between two variables is nonzero,the value of the sum of z score products is influenced not only by the size of the correlation,but also by the sample size (N).

Accepted Answer

A) True 
 B)False

Question 8

The ____________________ minimizes the sum of the squared discrepancies between the predicted and observed Y scores.

Accepted Answer

least squa

Question 9

In least squares analysis,the slope and intercept are defined so as to minimize the _____ that the data points,considered collectively,are from the regression line.

Accepted Answer

A) vertical distances 
B) horizontal distances 
C) squared vertical distances 
D) squared horizontal distances 
A) vertical distances 
B) horizontal distances 
C) squared vertical distances 
D) squared horizontal distances

Question 10

When one finds that there is a strong correlation between X and Y it is possible that.......

Accepted Answer

A) changes in X cause changes is Y. 
B) changes in Y cause changes is X. 
C) changes in X and Y are due to another variable. 
D) all of these 
A) changes in X cause changes is Y. 
B) changes in Y cause changes is X. 
C) changes in X and Y are due to another variable. 
D) all of these

Question 11

What are the consequences of using the correlation coefficient to assess a curvilinear relationship between two variables?

Accepted Answer

Two variables might be related,but if th

Question 12

In statistical computer output,when every variable of interest is correlated with every other variable,the output contains a correlation ____________________.

Accepted Answer

The answer of In statistical computer output,when every variable of...

Question 13

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 14

The sign of the correlation coefficient indicates the magnitude of the linear approximation.

Accepted Answer

A) True 
 B)False

Question 15

The _____ represents an average error across individuals in predicting scores on Y from the regression equation.

Accepted Answer

A) standard deviation 
B) standard error of estimate 
C) standard estimate of error 
D) standard error of discrepancy 
A) standard deviation 
B) standard error of estimate 
C) standard estimate of error 
D) standard error of discrepancy

Question 16

The fact that there is a positive relationship between the murder rate and ice cream consumption can be explained by the fact that both of these increase during hot weather.This is an example of a _____.

Accepted Answer

A) spurious relationship between the murder rate and ice cream consumption 
B) spurious relationship between hot weather and ice cream consumption 
C) nonlinear relationship between the murder rate and ice cream consumption 
D) nonlinear relationship between hot weather and ice cream consumption 
A) spurious relationship between the murder rate and ice cream consumption 
B) spurious relationship between hot weather and ice cream consumption 
C) nonlinear relationship between the murder rate and ice cream consumption 
D) nonlinear relationship between hot weather and ice cream consumption

Question 17

The Pearson correlation coefficient can range from _____.

Accepted Answer

A) 0.0 to + 1.00 
B) 1.00 to 100.00 
C) -1.00 to 1.00 
D) 0.0 to 8 
A) 0.0 to + 1.00 
B) 1.00 to 100.00 
C) -1.00 to 1.00 
D) 0.0 to 8

Question 18

What are the statistical and conceptual implications of designating one variable as the X variable and one variable as the Y variable?

Accepted Answer

From a statistical perspective,the desig

Question 19

The __________ indicates the number of units variable Y changes as variable X changes by 1 unit.

Accepted Answer

A) intercept 
B) correlation coefficient 
C) slope 
D) standard error of estimate 
A) intercept 
B) correlation coefficient 
C) slope 
D) standard error of estimate

Question 20

A ____________________ is a graph that represents values for X and Y for each person in the data set.

Accepted Answer

The answer of A ____________________ is a graph that represents...

For a perfect positive linear relationship,the z scores for the X and Y variables will tend to have _____.

A scatterplot primarily is intended to show

When standard scores are used to calculate the regression equation,the intercept will always equal _ and the slope will always equal _.

There seems to be a negative correlation between the number of errors made on an exam and the level of satisfaction with performance.What does this mean?

Refer to the following data set. Individual X Y 1 2 4 SCP = 80 2 4 8 SS_Y = 160 3 6 1 SS_X = 40 4 8 16 5 10 20 The correlation coefficient for the above is ______.

Which of the following linear relationships describes a situation in which the value of one variable decreases as the value of the second variable also decreases?

When the correlation between two variables is nonzero,the value of the sum of z score products is influenced not only by the size of the correlation,but also by the sample size (N).

The ____________________ minimizes the sum of the squared discrepancies between the predicted and observed Y scores.

In least squares analysis,the slope and intercept are defined so as to minimize the _____ that the data points,considered collectively,are from the regression line.

When one finds that there is a strong correlation between X and Y it is possible that.......

What are the consequences of using the correlation coefficient to assess a curvilinear relationship between two variables?

In statistical computer output,when every variable of interest is correlated with every other variable,the output contains a correlation ____________________.

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

The sign of the correlation coefficient indicates the magnitude of the linear approximation.

The _____ represents an average error across individuals in predicting scores on Y from the regression equation.

The fact that there is a positive relationship between the murder rate and ice cream consumption can be explained by the fact that both of these increase during hot weather.This is an example of a _____.

The Pearson correlation coefficient can range from _____.

What are the statistical and conceptual implications of designating one variable as the X variable and one variable as the Y variable?

The __________ indicates the number of units variable Y changes as variable X changes by 1 unit.

A ____________________ is a graph that represents values for X and Y for each person in the data set.

Introduction and Mathematical Preliminaries

Frequency and Probability Distributions

Percentiles percentile Ranks standard Scores and the Normal Distribution

Measures of Central Tendency and Variability

Estimation and Sampling Distributions

Hypothesis Testing: Inferences About a Single Mean

Probability

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

For a perfect positive linear relationship,the z scores for the X and Y variables will tend to have _____.

A scatterplot primarily is intended to show

When standard scores are used to calculate the regression equation,the intercept will always equal _____ and the slope will always equal _____.

There seems to be a negative correlation between the number of errors made on an exam and the level of satisfaction with performance.What does this mean?

Refer to the following data set. Individual X Y 1 2 4 SCP = 80 2 4 8 SSY = 160 3 6 1 SSX = 40 4 8 16 5 10 20 The correlation coefficient for the above is ______.

Which of the following linear relationships describes a situation in which the value of one variable decreases as the value of the second variable also decreases?

When the correlation between two variables is nonzero,the value of the sum of z score products is influenced not only by the size of the correlation,but also by the sample size (N).

The ____________________ minimizes the sum of the squared discrepancies between the predicted and observed Y scores.

In least squares analysis,the slope and intercept are defined so as to minimize the _____ that the data points,considered collectively,are from the regression line.

When one finds that there is a strong correlation between X and Y it is possible that.......

What are the consequences of using the correlation coefficient to assess a curvilinear relationship between two variables?

In statistical computer output,when every variable of interest is correlated with every other variable,the output contains a correlation ____________________.

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

The sign of the correlation coefficient indicates the magnitude of the linear approximation.

The _____ represents an average error across individuals in predicting scores on Y from the regression equation.

The fact that there is a positive relationship between the murder rate and ice cream consumption can be explained by the fact that both of these increase during hot weather.This is an example of a _____.

The Pearson correlation coefficient can range from _____.

What are the statistical and conceptual implications of designating one variable as the X variable and one variable as the Y variable?

The __________ indicates the number of units variable Y changes as variable X changes by 1 unit.

A ____________________ is a graph that represents values for X and Y for each person in the data set.

Introduction and Mathematical Preliminaries

Frequency and Probability Distributions

Percentiles percentile Ranks standard Scores and the Normal Distribution

Measures of Central Tendency and Variability

Estimation and Sampling Distributions

Hypothesis Testing: Inferences About a Single Mean

Probability

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

When standard scores are used to calculate the regression equation,the intercept will always equal _ and the slope will always equal _.

Refer to the following data set. Individual X Y 1 2 4 SCP = 80 2 4 8 SS_Y = 160 3 6 1 SS_X = 40 4 8 16 5 10 20 The correlation coefficient for the above is ______.