If $\chi$2 = 3.84 and n = 36,then what is the value of r?

A) .11 B) .16 C) .33 D) .36 A) .11 B) .16 C) .33 D) .36

Exam 15: Correlation

Suppose a correlation is computed in each of two samples.If the value of SS_XY is the same in each sample,and is larger in Sample 1,then in which sample will the value of the correlation coefficient be larger?

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Question 1

Correct Answer:

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A researcher measures the relationship between two variables,X and Y.If SS_XY = 340 and SS_XSS_Y = 320,000,then what is the value of the correlation coefficient?

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Question 2

Correct Answer:

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The coefficient of determination is mathematically equivalent to ______.

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Question 3

Correct Answer:

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To summarize correlations,we report ______.

(Multiple Choice)

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Question 4

Which of the following is the assumption that there is an equal variance of data points dispersed along the regression line?

(Multiple Choice)

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Question 5

The assumption of normality requires that the range of scores observed in a sample is the same of the possible range of scores in the population.

(True/False)

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Question 6

The appropriate correlation coefficient for measuring for the direction and strength of the linear relationship between two dichotomous variables is ______.

(Multiple Choice)

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Question 7

A correlation of r = .50 in a sample of 15 participants is statistically significant for a two-tailed test at a .05 level of significance.

(True/False)

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Question 8

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 is called ______.

(Multiple Choice)

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Question 9

We convert r to a t statistic for which of the following correlation tests?

(Multiple Choice)

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Question 10

If SS_XY = 5.32 and n = 40,then what is the value of the coefficient of determination?

(Multiple Choice)

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Question 11

The appropriate correlation coefficient for measuring the direction and strength of the linear relationship between one continuous and one dichotomous variable is ______.

(Multiple Choice)

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Question 12

The point-biserial correlation coefficient is a measure of the direction and strength of the linear relationship between two variables,where ______.

(Multiple Choice)

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Question 13

The formula for the Spearman correlation coefficient was derived from the formula for the Pearson correlation coefficient.

(True/False)

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Question 14

Homoscedasticity is the assumption that there is an equal variance of data points dispersed along the regression line.

(True/False)

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Question 15

A correlation of r = .38 in a sample of 30 participants is statistically significant for a two-tailed test at a .05 level of significance.

(True/False)

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Question 16

The numerator of the correlation coefficient measures the extent to which two variables ______.

(Multiple Choice)

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Question 17

If $\chi$ ² = 3.84 and n = 36,then what is the value of r?

(Multiple Choice)

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Question 18

A researcher measures the relationship between narcissism and willingness to help.If SS_XY = 240,SS_X = 320,and SS_Y = 410,then what is the value of the correlation coefficient?

(Multiple Choice)

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Question 19

The coefficient of determination is the square root of the correlation coefficient.

(True/False)

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Question 20

Showing 1 - 20 of 80

Suppose a correlation is computed in each of two samples.If the value of SS_XY is the same in each sample,and is larger in Sample 1,then in which sample will the value of the correlation coefficient be larger?

A researcher measures the relationship between two variables,X and Y.If SS_XY = 340 and SS_XSS_Y = 320,000,then what is the value of the correlation coefficient?

The coefficient of determination is mathematically equivalent to ______.

To summarize correlations,we report ______.

Which of the following is the assumption that there is an equal variance of data points dispersed along the regression line?

The assumption of normality requires that the range of scores observed in a sample is the same of the possible range of scores in the population.

The appropriate correlation coefficient for measuring for the direction and strength of the linear relationship between two dichotomous variables is ______.

A correlation of r = .50 in a sample of 15 participants is statistically significant for a two-tailed test at a .05 level of significance.

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 is called ______.

We convert r to a t statistic for which of the following correlation tests?

If SS_XY = 5.32 and n = 40,then what is the value of the coefficient of determination?

The appropriate correlation coefficient for measuring the direction and strength of the linear relationship between one continuous and one dichotomous variable is ______.

The point-biserial correlation coefficient is a measure of the direction and strength of the linear relationship between two variables,where ______.

The formula for the Spearman correlation coefficient was derived from the formula for the Pearson correlation coefficient.

Homoscedasticity is the assumption that there is an equal variance of data points dispersed along the regression line.

A correlation of r = .38 in a sample of 30 participants is statistically significant for a two-tailed test at a .05 level of significance.

The numerator of the correlation coefficient measures the extent to which two variables ______.

If $\chi$ ² = 3.84 and n = 36,then what is the value of r?

A researcher measures the relationship between narcissism and willingness to help.If SS_XY = 240,SS_X = 320,and SS_Y = 410,then what is the value of the correlation coefficient?

The coefficient of determination is the square root of the correlation coefficient.

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

Suppose a correlation is computed in each of two samples.If the value of SSXY is the same in each sample,and is larger in Sample 1,then in which sample will the value of the correlation coefficient be larger?

A researcher measures the relationship between two variables,X and Y.If SSXY = 340 and SSXSSY = 320,000,then what is the value of the correlation coefficient?

The coefficient of determination is mathematically equivalent to ______.

To summarize correlations,we report ______.

Which of the following is the assumption that there is an equal variance of data points dispersed along the regression line?

The assumption of normality requires that the range of scores observed in a sample is the same of the possible range of scores in the population.

The appropriate correlation coefficient for measuring for the direction and strength of the linear relationship between two dichotomous variables is ______.

A correlation of r = .50 in a sample of 15 participants is statistically significant for a two-tailed test at a .05 level of significance.

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 is called ______.

We convert r to a t statistic for which of the following correlation tests?

If SSXY = 5.32 and n = 40,then what is the value of the coefficient of determination?

The appropriate correlation coefficient for measuring the direction and strength of the linear relationship between one continuous and one dichotomous variable is ______.

The point-biserial correlation coefficient is a measure of the direction and strength of the linear relationship between two variables,where ______.

The formula for the Spearman correlation coefficient was derived from the formula for the Pearson correlation coefficient.

Homoscedasticity is the assumption that there is an equal variance of data points dispersed along the regression line.

A correlation of r = .38 in a sample of 30 participants is statistically significant for a two-tailed test at a .05 level of significance.

The numerator of the correlation coefficient measures the extent to which two variables ______.

If χ\chiχ 2 = 3.84 and n = 36,then what is the value of r?

A researcher measures the relationship between narcissism and willingness to help.If SSXY = 240,SSX = 320,and SSY = 410,then what is the value of the correlation coefficient?

The coefficient of determination is the square root of the correlation coefficient.

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

Suppose a correlation is computed in each of two samples.If the value of SS_XY is the same in each sample,and is larger in Sample 1,then in which sample will the value of the correlation coefficient be larger?

A researcher measures the relationship between two variables,X and Y.If SS_XY = 340 and SS_XSS_Y = 320,000,then what is the value of the correlation coefficient?

If SS_XY = 5.32 and n = 40,then what is the value of the coefficient of determination?

If $\chi$ ² = 3.84 and n = 36,then what is the value of r?

A researcher measures the relationship between narcissism and willingness to help.If SS_XY = 240,SS_X = 320,and SS_Y = 410,then what is the value of the correlation coefficient?