A researcher computes the following phi correlation coefficient: rF1F1F1S1$\phi$F1F1F10 = .42.If the sample size was 20,then what is the decision for this correlation test?

A) retain the null hypothesis B) reject the null hypothesis C) there is not enough information to answer this question A) retain the null hypothesis B) reject the null hypothesis C) there is not enough information to answer this question

Exam 15: Correlation

Restriction of range occurs when an unanticipated variable not accounted for in a research study that could be causing or associated with observed changes in one or more measured variables.

(True/False)

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Question 21

A researcher measures the correlation of the time it take participants to complete two tasks purported to measure the same cognitive skill.Participant times are converted to ranks from fastest to slowest.If = 165 and n = 20,then what is the decision for this correlation test?

(Multiple Choice)

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Question 22

The correlation coefficient ranges between and .

(Multiple Choice)

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Question 23

A researcher measures the following correlation between cups of coffee consumed daily and daily work schedule.Which description best explains the relationship between these two factors?

(Multiple Choice)

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Question 24

A researcher computes the following phi correlation coefficient: r_$\phi$ = .42.If the sample size was 20,then what is the decision for this correlation test?

(Multiple Choice)

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Question 25

The Spearman correlation coefficient is used to measure the correlation between two nominal variables.

(True/False)

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Question 26

Outliers can change both the direction and strength of a correlation coefficient.

(True/False)

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Question 27

The value of the sum of products can be positive or negative.

(True/False)

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Question 28

A positive correlation is always stronger than a negative correlation.

(True/False)

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Question 29

The normality assumption states that the population of X and Y scores form a bivariate ("two variable")normal distribution,such that ______.

(Multiple Choice)

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Question 30

A researcher measures the following correlation between number of years of education and life satisfaction: r = +.08.What is the value of the coefficient of determination?

(Multiple Choice)

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Question 31

The coefficient of determination is ______.

(Multiple Choice)

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Question 32

The closer that data points fall to the regression line,the more closely two factors are related.

(True/False)

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Question 33

The correlation coefficient ranges from -1.0 to +1.0,with values closer to ±1.0 indicating ______.

(Multiple Choice)

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Question 34

What is the problem with the following data for computing a correlation?

(Multiple Choice)

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Question 35

Correlation does not show causation.

(True/False)

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Question 36

A researcher measures the correlation between gender and student aptitude scores from 0 to 100 among 20 participants.If r_pb = .49,then what is the decision for this correlation test?

(Multiple Choice)

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Question 37

The correlation coefficient is used to measure the and of the linear relationship between two factors.

(Multiple Choice)

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Question 38

When we compute many correlations in a single study,we report each correlation coefficient in a table called a correlation matrix.

(True/False)

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Question 39

Which of the following is the assumption that the best way to describe the pattern of data is using a straight line?

(Multiple Choice)

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Question 40

Showing 21 - 40 of 80

Restriction of range occurs when an unanticipated variable not accounted for in a research study that could be causing or associated with observed changes in one or more measured variables.

A researcher measures the correlation of the time it take participants to complete two tasks purported to measure the same cognitive skill.Participant times are converted to ranks from fastest to slowest.If = 165 and n = 20,then what is the decision for this correlation test?

The correlation coefficient ranges between and .

A researcher measures the following correlation between cups of coffee consumed daily and daily work schedule.Which description best explains the relationship between these two factors?

A researcher computes the following phi correlation coefficient: r_$\phi$ = .42.If the sample size was 20,then what is the decision for this correlation test?

The Spearman correlation coefficient is used to measure the correlation between two nominal variables.

Outliers can change both the direction and strength of a correlation coefficient.

The value of the sum of products can be positive or negative.

A positive correlation is always stronger than a negative correlation.

The normality assumption states that the population of X and Y scores form a bivariate ("two variable")normal distribution,such that ______.

A researcher measures the following correlation between number of years of education and life satisfaction: r = +.08.What is the value of the coefficient of determination?

The coefficient of determination is ______.

The closer that data points fall to the regression line,the more closely two factors are related.

The correlation coefficient ranges from -1.0 to +1.0,with values closer to ±1.0 indicating ______.

What is the problem with the following data for computing a correlation?

Correlation does not show causation.

A researcher measures the correlation between gender and student aptitude scores from 0 to 100 among 20 participants.If r_pb = .49,then what is the decision for this correlation test?

The correlation coefficient is used to measure the and of the linear relationship between two factors.

When we compute many correlations in a single study,we report each correlation coefficient in a table called a correlation matrix.

Which of the following is the assumption that the best way to describe the pattern of data is using a straight line?

Introduction to Statistics

Summarizing Data: Frequency Distributions in Tables and Graphs

Summarizing Data: Central Tendency

Summarizing Data: Variability

Probability

Probability, normal Distributions, and Z Scores

Probability and Sampling Distributions

Hypothesis Testing: Significance,effect Size,and Power

Testing Means: One-Sample and Two-Independent-Sample T Tests

Testing Means: Truehe Related-Samples T Test

Estimation and Confidence Intervals

Analysis of Variance: One-Way Between-Subjects Design

Analysis of Variance: One-Way Within-Subjects Repeated-Measuresdesign

Analysis of Variance: Two-Way Between-Subjects Factorial Design

Linear Regression and Multiple Regression

Nonparametric Tests: Chi-Square Tests

Nonparametric Tests: Tests for Ordinal Data

Filters

Exam 15: Correlation

Restriction of range occurs when an unanticipated variable not accounted for in a research study that could be causing or associated with observed changes in one or more measured variables.

A researcher measures the correlation of the time it take participants to complete two tasks purported to measure the same cognitive skill.Participant times are converted to ranks from fastest to slowest.If = 165 and n = 20,then what is the decision for this correlation test?

The correlation coefficient ranges between ______ and ______.

A researcher measures the following correlation between cups of coffee consumed daily and daily work schedule.Which description best explains the relationship between these two factors?

A researcher computes the following phi correlation coefficient: r ϕ\phiϕ = .42.If the sample size was 20,then what is the decision for this correlation test?

The Spearman correlation coefficient is used to measure the correlation between two nominal variables.

Outliers can change both the direction and strength of a correlation coefficient.

The value of the sum of products can be positive or negative.

A positive correlation is always stronger than a negative correlation.

The normality assumption states that the population of X and Y scores form a bivariate ("two variable")normal distribution,such that ______.

A researcher measures the following correlation between number of years of education and life satisfaction: r = +.08.What is the value of the coefficient of determination?

The coefficient of determination is ______.

The closer that data points fall to the regression line,the more closely two factors are related.

The correlation coefficient ranges from -1.0 to +1.0,with values closer to ±1.0 indicating ______.

What is the problem with the following data for computing a correlation?

Correlation does not show causation.

A researcher measures the correlation between gender and student aptitude scores from 0 to 100 among 20 participants.If rpb = .49,then what is the decision for this correlation test?

The correlation coefficient is used to measure the ______ and ______ of the linear relationship between two factors.

When we compute many correlations in a single study,we report each correlation coefficient in a table called a correlation matrix.

Which of the following is the assumption that the best way to describe the pattern of data is using a straight line?

Introduction to Statistics

Summarizing Data: Frequency Distributions in Tables and Graphs

Summarizing Data: Central Tendency

Summarizing Data: Variability

Probability

Probability, normal Distributions, and Z Scores

Probability and Sampling Distributions

Hypothesis Testing: Significance,effect Size,and Power

Testing Means: One-Sample and Two-Independent-Sample T Tests

Testing Means: Truehe Related-Samples T Test

Estimation and Confidence Intervals

Analysis of Variance: One-Way Between-Subjects Design

Analysis of Variance: One-Way Within-Subjects Repeated-Measuresdesign

Analysis of Variance: Two-Way Between-Subjects Factorial Design

Linear Regression and Multiple Regression

Nonparametric Tests: Chi-Square Tests

Nonparametric Tests: Tests for Ordinal Data

Filters

The correlation coefficient ranges between and .

A researcher computes the following phi correlation coefficient: r_$\phi$ = .42.If the sample size was 20,then what is the decision for this correlation test?

A researcher measures the correlation between gender and student aptitude scores from 0 to 100 among 20 participants.If r_pb = .49,then what is the decision for this correlation test?

The correlation coefficient is used to measure the and of the linear relationship between two factors.