Question 1

If overlapping circles are used to illustrate the relationship between the coefficients of determination and nondetermination, each circle represents

Accepted Answer

A)  the coefficient of determination. 
B)  the coefficient of nondetermination. 
C)  the total variability for one of the variables. 
D)  the amount of shared variability. 
A)  the coefficient of determination. 
B)  the coefficient of nondetermination. 
C)  the total variability for one of the variables. 
D)  the amount of shared variability.

Question 2

______________ variables are used to estimate values on another variable in regression analysis.

Accepted Answer

A)  Criterion 
B)  Predictor 
C)  Probability 
D)  Theoretical 
A)  Criterion 
B)  Predictor 
C)  Probability 
D)  Theoretical

Question 3

A positive correlation coefficient indicates

Accepted Answer

A)  a favorable outcome. 
B)  scores from two variables that move in opposite directions. 
C)  scores from two variables that move in the same direction. 
D)  when to reject the null hypothesis. 
A)  a favorable outcome. 
B)  scores from two variables that move in opposite directions. 
C)  scores from two variables that move in the same direction. 
D)  when to reject the null hypothesis.

Question 4

______________________ is suggested if the data points of a scatterplot are widely dispersed.

Accepted Answer

A)  A positive correlation 
B)  A negative correlation 
C)  A weak correlation 
D)  A strong correlation 
A)  A positive correlation 
B)  A negative correlation 
C)  A weak correlation 
D)  A strong correlation

Question 5

What is meant by a negative correlation between two variables?

Accepted Answer

A negative correlation indicat

Question 6

Below are data for the number of hours that a random sample of students spent studying (X) and their score on a 25-point quiz (Y). Are longer study sessions related to higher scores? Conduct a Pearson correlation test, one-tailed at α = .01.

Accepted Answer

Hours spent studying and scores on a qui

Question 7

If the result of your calculation of the Pearson correlation coefficient is ________, you have made a mistake.

Accepted Answer

A)  −.00 
B)  −.99 
C)  +1.21 
D)  +.76 
A)  −.00 
B)  −.99 
C)  +1.21 
D)  +.76

Question 8

Uses of the Pearson correlation include measuring the reliability and validity of assessment instruments and _________________.

Accepted Answer

A)  identifying outliers 
B)  prediction 
C)  establishing cause and effect 
D)  determining the strength of curvilinear relationships. 
A)  identifying outliers 
B)  prediction 
C)  establishing cause and effect 
D)  determining the strength of curvilinear relationships.

Question 9

The correct notation for a non-directional alternative hypothesis for a Pearson correlation is

Accepted Answer

A)  H₁: p ≥ 0 
B)  H₁: p = 0 
C)  H₁: p ≠ 0 
D)  H₁: p < 0 
A)  H₁: p ≥ 0 
B)  H₁: p = 0 
C)  H₁: p ≠ 0 
D)  H₁: p < 0

Question 10

The _____________ is the point where the regression line cuts across the Y-axis.

Accepted Answer

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

Question 11

If a strong positive correlation between two variables is found, which of the following statements is legitimate?

Accepted Answer

A)  A cause and effect relationship may be indicated. 
B)  X causes changes in Y. 
C)  Y causes changes in X. 
D)  All of the above are true. 
A)  A cause and effect relationship may be indicated. 
B)  X causes changes in Y. 
C)  Y causes changes in X. 
D)  All of the above are true.

Question 12

If you were conducting a hypothesis test for a Pearson correlation for a sample size of 18, df would be ______.

Accepted Answer

A)  20 
B)  16 
C)  17 
D)  19 
A)  20 
B)  16 
C)  17 
D)  19

Question 13

A positive correlation coefficient suggests that

Accepted Answer

A)  high scores on Y are associated with low scores on X. 
B)  high scores on Y are associated with high scores on X. 
C)  low scores on Y are associated with low scores on X. 
D)  Both "b" and "c" are correct. 
A)  high scores on Y are associated with low scores on X. 
B)  high scores on Y are associated with high scores on X. 
C)  low scores on Y are associated with low scores on X. 
D)  Both "b" and "c" are correct.

Question 14

Which of the following represents the coefficient of determination?

Accepted Answer

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

Question 15

In the regression equation, "b" symbolizes the ____________.

Accepted Answer

A)  coefficient of determination 
B)  coefficient of nondetermination 
C)  slope 
D)  Y-intercept 
A)  coefficient of determination 
B)  coefficient of nondetermination 
C)  slope 
D)  Y-intercept

Question 16

Which of the following is the correct notation for a directional alternative hypothesis for a Pearson correlation?

Accepted Answer

A)  H₁: p ≥ 0 
B)  H₁: p ≠ 0 
C)  H₁: p = 0 
D)  H₁: p < 0 
A)  H₁: p ≥ 0 
B)  H₁: p ≠ 0 
C)  H₁: p = 0 
D)  H₁: p < 0

Question 17

A negative correlation coefficient indicates

Accepted Answer

A)  a favorable outcome. 
B)  scores from two variables that move in opposite directions. 
C)  scores from two variables that move in the same direction. 
D)  when to reject the null hypothesis. 
A)  a favorable outcome. 
B)  scores from two variables that move in opposite directions. 
C)  scores from two variables that move in the same direction. 
D)  when to reject the null hypothesis.

Question 18

Using more than one predictor variable is referred to as _____________ regression analysis.

Accepted Answer

A)  cumulative 
B)  complex 
C)  simple 
D)  multiple 
A)  cumulative 
B)  complex 
C)  simple 
D)  multiple

Question 19

Explain what is meant by the coefficients of determination and nondetermination.

Accepted Answer

The coefficient of determination is the

Question 20

A regression equation is Y' = .72X + 4.98 with X being sores on messiness and Y being scores on creativity. What creativity score would be predicted for a person who scored 11 on messiness?

Accepted Answer

Predicted

If overlapping circles are used to illustrate the relationship between the coefficients of determination and nondetermination, each circle represents

______________ variables are used to estimate values on another variable in regression analysis.

A positive correlation coefficient indicates

______________________ is suggested if the data points of a scatterplot are widely dispersed.

What is meant by a negative correlation between two variables?

Below are data for the number of hours that a random sample of students spent studying (X) and their score on a 25-point quiz (Y). Are longer study sessions related to higher scores? Conduct a Pearson correlation test, one-tailed at α = .01.

If the result of your calculation of the Pearson correlation coefficient is ________, you have made a mistake.

Uses of the Pearson correlation include measuring the reliability and validity of assessment instruments and _________________.

The correct notation for a non-directional alternative hypothesis for a Pearson correlation is

The _____________ is the point where the regression line cuts across the Y-axis.

If a strong positive correlation between two variables is found, which of the following statements is legitimate?

If you were conducting a hypothesis test for a Pearson correlation for a sample size of 18, df would be ______.

A positive correlation coefficient suggests that

Which of the following represents the coefficient of determination?

In the regression equation, "b" symbolizes the ____________.

Which of the following is the correct notation for a directional alternative hypothesis for a Pearson correlation?

A negative correlation coefficient indicates

Using more than one predictor variable is referred to as _____________ regression analysis.

Explain what is meant by the coefficients of determination and nondetermination.

A regression equation is Y' = .72X + 4.98 with X being sores on messiness and Y being scores on creativity. What creativity score would be predicted for a person who scored 11 on messiness?

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 overlapping circles are used to illustrate the relationship between the coefficients of determination and nondetermination, each circle represents

______________ variables are used to estimate values on another variable in regression analysis.

A positive correlation coefficient indicates

______________________ is suggested if the data points of a scatterplot are widely dispersed.

What is meant by a negative correlation between two variables?

Below are data for the number of hours that a random sample of students spent studying (X) and their score on a 25-point quiz (Y). Are longer study sessions related to higher scores? Conduct a Pearson correlation test, one-tailed at α = .01.

If the result of your calculation of the Pearson correlation coefficient is ________, you have made a mistake.

Uses of the Pearson correlation include measuring the reliability and validity of assessment instruments and _________________.

The correct notation for a non-directional alternative hypothesis for a Pearson correlation is

The _____________ is the point where the regression line cuts across the Y-axis.

If a strong positive correlation between two variables is found, which of the following statements is legitimate?

If you were conducting a hypothesis test for a Pearson correlation for a sample size of 18, df would be ______.

A positive correlation coefficient suggests that

Which of the following represents the coefficient of determination?

In the regression equation, "b" symbolizes the ____________.

Which of the following is the correct notation for a directional alternative hypothesis for a Pearson correlation?

A negative correlation coefficient indicates

Using more than one predictor variable is referred to as _____________ regression analysis.

Explain what is meant by the coefficients of determination and nondetermination.

A regression equation is Y' = .72X + 4.98 with X being sores on messiness and Y being scores on creativity. What creativity score would be predicted for a person who scored 11 on messiness?

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