Question 1

If two variables are related in a fashion that is nonlinear,Pearson correlation:

Accepted Answer

A) will always be negative 
B) will be sensitive to this 
C) will not be sensitive to this 
D) will always be positive 
A) will always be negative 
B) will be sensitive to this 
C) will not be sensitive to this 
D) will always be positive

Question 2

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 3

Regarding correlation and causation,if we observe a positive correlation between two variables,we cannot conclude that there is a ____________________ relationship between the two variables.

Accepted Answer

The answer of Regarding correlation and causation,if we observe a...

Question 4

The range of the correlation coefficient is from -1.00 to ____________________.

Accepted Answer

The answer of The range of the correlation coefficient is...

Question 5

Restricting the range of two variables will always lower the correlation between them.

Accepted Answer

A) True 
 B)False

Question 6

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

Accepted Answer

A) True 
 B)False

Question 7

A correlation coefficient of _____ means the two variables form a perfect linear relationship.

Accepted Answer

A) +1.00 
B) -1.00 
C) 0 
D) a and b 
A) +1.00 
B) -1.00 
C) 0 
D) a and b

Question 8

In the behavioral sciences where complex behaviors are studied,correlations in the .20 to .30 range (and the -.20 to -.30 range)are usually considered to be unimportant.

Accepted Answer

A) True 
 B)False

Question 9

The sum of the cross products is a measure of _____.

Accepted Answer

A) covariation between two sets of scores 
B) variability between the X mean and the Y mean 
C) sum of the squares for variable y multiplied by x values 
D) the determination coefficient 
A) covariation between two sets of scores 
B) variability between the X mean and the Y mean 
C) sum of the squares for variable y multiplied by x values 
D) the determination coefficient

Question 10

The standard error of estimate is an indication of

Accepted Answer

A) the average deviation from the mean of the regression line 
B) the average amount of error in calculating a z score for an individual 
C) the average error resulting from predicting Y values from X scores using a regression equation. 
D) the average sum of the differences between actual Y scores and predicted Y scores for a set of scores. 
A) the average deviation from the mean of the regression line 
B) the average amount of error in calculating a z score for an individual 
C) the average error resulting from predicting Y values from X scores using a regression equation. 
D) the average sum of the differences between actual Y scores and predicted Y scores for a set of scores.

Question 11

The purpose of a scatterplot is to

Accepted Answer

A) graph a straight line that represents a relationship 
B) calculate the slop of the line 
C) calculate the linear equation for the data set 
D) graph the values of variables X and Y for each person 
A) graph a straight line that represents a relationship 
B) calculate the slop of the line 
C) calculate the linear equation for the data set 
D) graph the values of variables X and Y for each person

Question 12

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 standard error of estimate for the above data.

Accepted Answer

If two variables are related in a fashion that is nonlinear,Pearson correlation:

Which type of relationship is graphed in the following scatterplot?

Regarding correlation and causation,if we observe a positive correlation between two variables,we cannot conclude that there is a ____________________ relationship between the two variables.

The range of the correlation coefficient is from -1.00 to ____________________.

Restricting the range of two variables will always lower the correlation between them.

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

A correlation coefficient of _____ means the two variables form a perfect linear relationship.

In the behavioral sciences where complex behaviors are studied,correlations in the .20 to .30 range (and the -.20 to -.30 range)are usually considered to be unimportant.

The sum of the cross products is a measure of _____.

The standard error of estimate is an indication of

The purpose of a scatterplot is to

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

If two variables are related in a fashion that is nonlinear,Pearson correlation:

Which type of relationship is graphed in the following scatterplot?

Regarding correlation and causation,if we observe a positive correlation between two variables,we cannot conclude that there is a ____________________ relationship between the two variables.

The range of the correlation coefficient is from -1.00 to ____________________.

Restricting the range of two variables will always lower the correlation between them.

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

A correlation coefficient of _____ means the two variables form a perfect linear relationship.

In the behavioral sciences where complex behaviors are studied,correlations in the .20 to .30 range (and the -.20 to -.30 range)are usually considered to be unimportant.

The sum of the cross products is a measure of _____.

The standard error of estimate is an indication of

The purpose of a scatterplot is to

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