Question 1

A researcher selects a sample of 110 participants and computes the following phi correlation coefficient:   = 0.31.What is the value of   ?

Accepted Answer

A) 3.84 
B) 10.57 
C) 34.10 
D) There is not enough information to answer this question. 
A) 3.84 
B) 10.57 
C) 34.10 
D) There is not enough information to answer this question. B

Question 2

To appropriately interpret the chi-square goodness-of-fit test,it is necessary to compare differences

Accepted Answer

A) at each level of the categorical variable 
B) across the levels of the categorical variable 
C) within and between expected frequencies 
A) at each level of the categorical variable 
B) across the levels of the categorical variable 
C) within and between expected frequencies A

Question 3

When k = 3,then the critical value for a chi-square goodness-of-fit test is 7.81.

Accepted Answer

A) True 
 B)False  False

Question 4

A researcher computes a 2 $\times$ 3 chi-square test for independence.In this example,the degrees of freedom are 2.

Accepted Answer

A) True 
 B)False

Question 5

A chi-square goodness-of-fit test is used to determine how well a set of observed frequencies "fits" with what was expected.

Accepted Answer

A) True 
 B)False

Question 6

Which of the following is an appropriate measure of effect size for a 2 $\times$ 2 chi-square test for independence?

Accepted Answer

A) proportion of variance 
B) the phi coefficient 
C) Cramer's V 
D) all of the above 
A) proportion of variance 
B) the phi coefficient 
C) Cramer's V 
D) all of the above

Question 7

Parametric tests are often called distribution-free tests.

Accepted Answer

A) True 
 B)False

Question 8

A researcher conducts a chi-square goodness-of-fit test in which k = 3 and   = 4.32.What is the decision for this test at a .05 level of significance?

Accepted Answer

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.

Question 9

One way a researcher can correct for having expected frequencies smaller than five is to increase the levels of the categorical variable such that the number of levels

Accepted Answer

A) is equal to the sample size 
B) is greater than four 
C) is less than five 
D) is minimal 
A) is equal to the sample size 
B) is greater than four 
C) is less than five 
D) is minimal

Question 10

The test statistic is the same for a chi-square goodness-of-fit test and a chi-square test for independence.

Accepted Answer

A) True 
 B)False

Question 11

One way a researcher can correct for having expected frequencies smaller than five is to increase the sample size such that

Accepted Answer

A) it is equal to the number of cells 
B) it is three times larger than the number of cells 
C) it is five times larger than the number of cells 
D) it is seven times smaller than the number of cells 
A) it is equal to the number of cells 
B) it is three times larger than the number of cells 
C) it is five times larger than the number of cells 
D) it is seven times smaller than the number of cells

Question 12

Variance is not computed using the chi-square tests.

Accepted Answer

A) True 
 B)False

Question 13

A 2 $\times$ 2 chi-square test for independence has 4 degrees of freedom.

Accepted Answer

A) True 
 B)False

Question 14

A researcher reports the following results for a chi-square test: $\chi$2(1)= 5.386,p < .05 (V = 0.224).If this test were a test for independence,then how many groups were observed?

Accepted Answer

A) 1 
B) 2 
C) 3 
D) 4 
A) 1 
B) 2 
C) 3 
D) 4

Question 15

If a researcher computes a chi-square goodness-of-fit test in which k = 4 and n = 40,then the degrees of freedom for this test is 3.

Accepted Answer

A) True 
 B)False

Question 16

A researcher asks participants to taste each of three meals and to choose the one they like best.The same foods are in each meal,expect for the calorie total of the meal (which is low,moderate,or high calorie).Based on the observed frequencies given below,what is an appropriate conclusion for this test at a .05 level of significance?

Accepted Answer

A) Participants liked the high calorie meal more than the low calorie meal. 
B) Participants liked the low calorie meal less than the moderate calorie meal. 
C) Participants liked the high calorie meal more than was expected. 
D) all of the above 
A) Participants liked the high calorie meal more than the low calorie meal. 
B) Participants liked the low calorie meal less than the moderate calorie meal. 
C) Participants liked the high calorie meal more than was expected. 
D) all of the above

Question 17

A local ice cream shop wants to see if they should promote a new swizzleberry swirl or creamsicle flavored drink.In order to determine which one to promote,they took a sample of 80 patrons and asked them to choose which they preferred.The one that is significantly preferred over the other (at a .05 level of significance)will be promoted.It is expected that an equal number of patrons will choose each flavor.Based on the observed frequencies given below,what is the decision for this test?

Accepted Answer

A) Promote the swizzleberry swirl flavored drink. 
B) Promote the creamsicle flavored drink. 
C) Do not promote any flavored drinks. 
D) There is not enough information to answer this question. 
A) Promote the swizzleberry swirl flavored drink. 
B) Promote the creamsicle flavored drink. 
C) Do not promote any flavored drinks. 
D) There is not enough information to answer this question.

Question 18

A researcher conducts a chi-square goodness-of-fit test in which k = 5.What is the critical value for this test at a .05 level of significance?

Accepted Answer

A) 4 
B) 5 
C) 9.49 
D) 11.07 
A) 4 
B) 5 
C) 9.49 
D) 11.07

Question 19

Homogeneity of variance is one assumption for the chi-square goodness-of-fit test.

Accepted Answer

A) True 
 B)False

Question 20

A researcher selects a sample of 80 people and records the frequency of participants choosing a low,moderate,or high calorie dessert in a buffet.What are the degrees of freedom for this chi-square goodness-of-fit test?

Accepted Answer

A) 2 
B) 3 
C) 79 
D) 80 
A) 2 
B) 3 
C) 79 
D) 80

A researcher selects a sample of 110 participants and computes the following phi correlation coefficient: = 0.31.What is the value of ?

To appropriately interpret the chi-square goodness-of-fit test,it is necessary to compare differences

When k = 3,then the critical value for a chi-square goodness-of-fit test is 7.81.

A researcher computes a 2 $\times$ 3 chi-square test for independence.In this example,the degrees of freedom are 2.

A chi-square goodness-of-fit test is used to determine how well a set of observed frequencies "fits" with what was expected.

Which of the following is an appropriate measure of effect size for a 2 $\times$ 2 chi-square test for independence?

Parametric tests are often called distribution-free tests.

A researcher conducts a chi-square goodness-of-fit test in which k = 3 and = 4.32.What is the decision for this test at a .05 level of significance?

One way a researcher can correct for having expected frequencies smaller than five is to increase the levels of the categorical variable such that the number of levels

The test statistic is the same for a chi-square goodness-of-fit test and a chi-square test for independence.

One way a researcher can correct for having expected frequencies smaller than five is to increase the sample size such that

Variance is not computed using the chi-square tests.

A 2 $\times$ 2 chi-square test for independence has 4 degrees of freedom.

A researcher reports the following results for a chi-square test: $\chi$ ²(1)= 5.386,p < .05 (V = 0.224).If this test were a test for independence,then how many groups were observed?

If a researcher computes a chi-square goodness-of-fit test in which k = 4 and n = 40,then the degrees of freedom for this test is 3.

A researcher conducts a chi-square goodness-of-fit test in which k = 5.What is the critical value for this test at a .05 level of significance?

Homogeneity of variance is one assumption for the chi-square goodness-of-fit test.

A researcher selects a sample of 80 people and records the frequency of participants choosing a low,moderate,or high calorie dessert in a buffet.What are the degrees of freedom for this chi-square goodness-of-fit test?

Introduction to Statistics

Summarizing Data: Frequency Distributions in

Summarizing Data: Central Tendency

Summarizing Data: Variability

Probability, Normal Distributions, and Z Scores

Characteristics of the Sample Mean

Hypothesis Testing: Significance, Effect Size, and Power

Testing Means: One-Sample T Test With Confidence Intervals

Testing Means: Two- Independent-Sample T Test With Confidence Intervals

Testing Means: Related-Samples T Test With Confidence Intervals

One-Way Analysis of Variance: Between- Subjects and Within- Subjects Repeated- Measures Designs

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

Correlation and Linear Regression

Chi-Square Tests: Goodness of Fit and the Test for Independence

Nonparametric Tests for Ordinal Data: Understanding and Interpretation

Understanding Regression Analysis

Understanding Correlation Coefficients in Statistical Analysis

Filters

Exam 16: Chi-Square Tests: Goodness-of-Fit and Independence

A researcher selects a sample of 110 participants and computes the following phi correlation coefficient: = 0.31.What is the value of ?

To appropriately interpret the chi-square goodness-of-fit test,it is necessary to compare differences

When k = 3,then the critical value for a chi-square goodness-of-fit test is 7.81.

A researcher computes a 2 ×\times× 3 chi-square test for independence.In this example,the degrees of freedom are 2.

A chi-square goodness-of-fit test is used to determine how well a set of observed frequencies "fits" with what was expected.

Which of the following is an appropriate measure of effect size for a 2 ×\times× 2 chi-square test for independence?

Parametric tests are often called distribution-free tests.

A researcher conducts a chi-square goodness-of-fit test in which k = 3 and = 4.32.What is the decision for this test at a .05 level of significance?

One way a researcher can correct for having expected frequencies smaller than five is to increase the levels of the categorical variable such that the number of levels

The test statistic is the same for a chi-square goodness-of-fit test and a chi-square test for independence.

One way a researcher can correct for having expected frequencies smaller than five is to increase the sample size such that

Variance is not computed using the chi-square tests.

A 2 ×\times× 2 chi-square test for independence has 4 degrees of freedom.

A researcher reports the following results for a chi-square test: χ\chiχ 2(1)= 5.386,p < .05 (V = 0.224).If this test were a test for independence,then how many groups were observed?

If a researcher computes a chi-square goodness-of-fit test in which k = 4 and n = 40,then the degrees of freedom for this test is 3.

A researcher conducts a chi-square goodness-of-fit test in which k = 5.What is the critical value for this test at a .05 level of significance?

Homogeneity of variance is one assumption for the chi-square goodness-of-fit test.

A researcher selects a sample of 80 people and records the frequency of participants choosing a low,moderate,or high calorie dessert in a buffet.What are the degrees of freedom for this chi-square goodness-of-fit test?

Introduction to Statistics

Summarizing Data: Frequency Distributions in

Summarizing Data: Central Tendency

Summarizing Data: Variability

Probability, Normal Distributions, and Z Scores

Characteristics of the Sample Mean

Hypothesis Testing: Significance, Effect Size, and Power

Testing Means: One-Sample T Test With Confidence Intervals

Testing Means: Two- Independent-Sample T Test With Confidence Intervals

Testing Means: Related-Samples T Test With Confidence Intervals

One-Way Analysis of Variance: Between- Subjects and Within- Subjects Repeated- Measures Designs

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

Correlation and Linear Regression

Chi-Square Tests: Goodness of Fit and the Test for Independence

Nonparametric Tests for Ordinal Data: Understanding and Interpretation

Understanding Regression Analysis

Understanding Correlation Coefficients in Statistical Analysis

Filters

A researcher computes a 2 $\times$ 3 chi-square test for independence.In this example,the degrees of freedom are 2.

Which of the following is an appropriate measure of effect size for a 2 $\times$ 2 chi-square test for independence?

A 2 $\times$ 2 chi-square test for independence has 4 degrees of freedom.

A researcher reports the following results for a chi-square test: $\chi$ ²(1)= 5.386,p < .05 (V = 0.224).If this test were a test for independence,then how many groups were observed?