Question 1

If a Pearson correlation is close to 0, the data points on the scatterplot

Accepted Answer

A)  will be scattered randomly throughout the graph. 
B)  will be close to the regression line from the lower left corner to the upper right corner. 
C)  will be close to the regression line from the lower right corner to the upper left corner. 
D)  will be close to the regression line which runs straight across the middle of the graph. 
A)  will be scattered randomly throughout the graph. 
B)  will be close to the regression line from the lower left corner to the upper right corner. 
C)  will be close to the regression line from the lower right corner to the upper left corner. 
D)  will be close to the regression line which runs straight across the middle of the graph.

Question 2

Calculate a Pearson correlation for the following scores:

Accepted Answer

The answer of Calculate a Pearson correlation for the following...

Question 3

The straight line that runs through a scatterplot used for predicting Y-scores from given X-scores is called the

Accepted Answer

A)  line of expectancy. 
B)  regression line. 
C)  line of best fit. 
D)  Both "b" and "c" are correct. 
A)  line of expectancy. 
B)  regression line. 
C)  line of best fit. 
D)  Both "b" and "c" are correct.

Question 4

Which of the following statements reflects a negative correlation?

Accepted Answer

A)  The less time a company spends on marketing, the fewer customers they tend to have. 
B)  The longer you go without food, the hungrier you will be. 
C)  As running pace increases, the amount of time it takes to get to the finish line decreases. 
D)  As temperature decreases, the cost spent on air conditioning goes down. 
A)  The less time a company spends on marketing, the fewer customers they tend to have. 
B)  The longer you go without food, the hungrier you will be. 
C)  As running pace increases, the amount of time it takes to get to the finish line decreases. 
D)  As temperature decreases, the cost spent on air conditioning goes down.

Question 5

The null hypothesis for the Pearson correlation

Accepted Answer

A)  is that there is no relationship between the two variables. 
B)  asserts a non-zero correlation in the population. 
C)  assumes a correlation equal to 1 in the population. 
D)  asserts a non-zero correlation in the sample. 
A)  is that there is no relationship between the two variables. 
B)  asserts a non-zero correlation in the population. 
C)  assumes a correlation equal to 1 in the population. 
D)  asserts a non-zero correlation in the sample.

Question 6

If r = .82, what is the coefficient of determination?

Accepted Answer

A)  .18 
B)  .2417 
C)  .3276 
D)  .6724 
A)  .18 
B)  .2417 
C)  .3276 
D)  .6724

Question 7

The variable that is estimated from predictor variables in regression analysis is called the ______________ variable.

Accepted Answer

A)  criterion 
B)  predictor 
C)  probability 
D)  theoretical 
A)  criterion 
B)  predictor 
C)  probability 
D)  theoretical

Question 8

Which of the following represents the coefficient of nondetermination?

Accepted Answer

A)  r² 
B)  1 - r² 
C)  1 
D)  r² - 1 
A)  r² 
B)  1 - r² 
C)  1 
D)  r² - 1

Question 9

Summarize why caution should be exercised when interpreting correlations as pertaining to the following:
a. cause and effect
b. restricted range
c. outliers

Accepted Answer

Caution when interpreting correlations:

Question 10

Given a correlation coefficient of r = .85, what is the coefficient of determination?

Accepted Answer

The answer of Given a correlation coefficient of r =...

Question 11

How would you describe the strength of a correlation of r = .04?

Accepted Answer

A correlation of r =

Question 12

Given a correlation of r = .89, what is the coefficient of nondetermination?

Accepted Answer

r² = .79
1

Question 13

The ____________ is the component of the regression equation that tells how much and in what direction the regression line slants.

Accepted Answer

A)  descent 
B)  angle 
C)  slope 
D)  Y-intercept 
A)  descent 
B)  angle 
C)  slope 
D)  Y-intercept

Question 14

Describe the three main uses of the Pearson correlation that are discussed in your text.

Accepted Answer

The Pearson correlation can be used to e

If a Pearson correlation is close to 0, the data points on the scatterplot

Calculate a Pearson correlation for the following scores:

The straight line that runs through a scatterplot used for predicting Y-scores from given X-scores is called the

Which of the following statements reflects a negative correlation?

The null hypothesis for the Pearson correlation

If r = .82, what is the coefficient of determination?

The variable that is estimated from predictor variables in regression analysis is called the ______________ variable.

Which of the following represents the coefficient of nondetermination?

Summarize why caution should be exercised when interpreting correlations as pertaining to the following: a. cause and effect b. restricted range c. outliers

Given a correlation coefficient of r = .85, what is the coefficient of determination?

How would you describe the strength of a correlation of r = .04?

Given a correlation of r = .89, what is the coefficient of nondetermination?

The ____________ is the component of the regression equation that tells how much and in what direction the regression line slants.

Describe the three main uses of the Pearson correlation that are discussed in your text.

Organizing Data Using Tables and Graphs

Measures of Central Tendency

Measures of Variability

Z-Scores and Other Standard Scores

Probability and the Normal Distribution

Sampling Distribution of Means

Hypothesis Testing

One-Sample T-Test

Two-Sample T-Test: Independent Samples Design

Two-Sample T-Test: Related Samples Design

Confidence Interval Versus Point Estimation

One-Way Analysis of Variance

Factorial Analysis of Variance

Chi-Square

Introduction to Statistics

Nonparametric Statistics for Ordinal Data

Filters

Exam 15: Correlation and Regression

If a Pearson correlation is close to 0, the data points on the scatterplot

Calculate a Pearson correlation for the following scores:

The straight line that runs through a scatterplot used for predicting Y-scores from given X-scores is called the

Which of the following statements reflects a negative correlation?

The null hypothesis for the Pearson correlation

If r = .82, what is the coefficient of determination?

The variable that is estimated from predictor variables in regression analysis is called the ______________ variable.

Which of the following represents the coefficient of nondetermination?

Summarize why caution should be exercised when interpreting correlations as pertaining to the following: a. cause and effect b. restricted range c. outliers

Given a correlation coefficient of r = .85, what is the coefficient of determination?

How would you describe the strength of a correlation of r = .04?

Given a correlation of r = .89, what is the coefficient of nondetermination?

The ____________ is the component of the regression equation that tells how much and in what direction the regression line slants.

Describe the three main uses of the Pearson correlation that are discussed in your text.

Organizing Data Using Tables and Graphs

Measures of Central Tendency

Measures of Variability

Z-Scores and Other Standard Scores

Probability and the Normal Distribution

Sampling Distribution of Means

Hypothesis Testing

One-Sample T-Test

Two-Sample T-Test: Independent Samples Design

Two-Sample T-Test: Related Samples Design

Confidence Interval Versus Point Estimation

One-Way Analysis of Variance

Factorial Analysis of Variance

Chi-Square

Introduction to Statistics

Nonparametric Statistics for Ordinal Data

Filters