Question 1

A chi-square goodness-of-fit test with five levels of a categorical variable will have four degrees of freedom.

Accepted Answer

A) True 
 B)False

Question 2

Which of the following is a key assumption for a chi-square goodness-of-fit test?

Accepted Answer

A) The observed frequencies are independently recorded in each cell. 
B) The variance between groups is equal. 
C) There is no mean difference between groups. 
D) The proportion in each cell is equal to zero. 
A) The observed frequencies are independently recorded in each cell. 
B) The variance between groups is equal. 
C) There is no mean difference between groups. 
D) The proportion in each cell is equal to zero.

Question 3

The larger the value of the chi-square test statistic,the more likely the discrepancy between observed and expected frequencies was due to chance or error.

Accepted Answer

A) True 
 B)False

Question 4

A researcher computes a 2 $\times$ 4 chi-square test for independence.What are the degrees of freedom for this test?

Accepted Answer

A) 2 
B) 3 
C) 4 
D) 8 
A) 2 
B) 3 
C) 4 
D) 8

Question 5

A researcher computes a 3 $\times$ 5 chi-square test for independence.What are the degrees of freedom for this test?

Accepted Answer

A) 3 
B) 5 
C) 8 
D) 15 
A) 3 
B) 5 
C) 8 
D) 15

Question 6

The observed frequencies can be summarized,

Accepted Answer

A) in a table 
B) in a figure 
C) in the main text 
D) all of the above 
A) in a table 
B) in a figure 
C) in the main text 
D) all of the above

Question 7

As a general rule,the larger the degrees of freedom for a chi-square test,

Accepted Answer

A) the smaller the critical value will be 
B) the larger the critical value will be 
C) the smaller the level of significance will be 
D) the larger the level of significance will be 
A) the smaller the critical value will be 
B) the larger the critical value will be 
C) the smaller the level of significance will be 
D) the larger the level of significance will be

Question 8

A researcher computes a 2 $\times$ 3 chi-square test for independence.What is the critical value for this test at a .05 level of significance?

Accepted Answer

A) 3.84 
B) 5.99 
C) 7.81 
D) 12.59 
A) 3.84 
B) 5.99 
C) 7.81 
D) 12.59

Question 9

A key assumption for a chi-square goodness-of-fit test is that observed frequencies are independently recorded in each cell.

Accepted Answer

A) True 
 B)False

Question 10

What is the key assumption for a chi-square goodness-of-fit test?

Accepted Answer

A) The population is normally distributed. 
B) Observed frequencies are independently recorded in each cell. 
C) Expected frequencies are homogeneous. 
D) all of the above 
A) The population is normally distributed. 
B) Observed frequencies are independently recorded in each cell. 
C) Expected frequencies are homogeneous. 
D) all of the above

Question 11

Which of the following is recorded using a chi-square goodness-of-fit test and a chi-square test for independence?

Accepted Answer

A) variance 
B) frequency observed 
C) frequency expected 
D) both B and C 
A) variance 
B) frequency observed 
C) frequency expected 
D) both B and C

Question 12

The phi coefficient can be used to estimate the effect size of a 2$\times$ 2 chi-square test for independence.

Accepted Answer

A) True 
 B)False

Question 13

A researcher computes a 4 $\times$ 6 chi-square test for independence with a sample of 120 participants,with   = 14.79.What is the effect size for this result?

Accepted Answer

A) 0.04 
B) 0.20 
C) 0.12 
D) 0.35 
A) 0.04 
B) 0.20 
C) 0.12 
D) 0.35

Question 14

To interpret a chi-square goodness-of-fit test,we compare observed and expected frequencies at each level of the categorical variable,and not across the levels of the categorical variable.

Accepted Answer

A) True 
 B)False

Question 15

To summarize the chi-square test,report the test statistic,the degrees of freedom,and the p value.

Accepted Answer

A) True 
 B)False

Question 16

For a 2 $\times$ 2 chi-square test for independence,the value of a phi coefficient will equal the value of Cramer's V for a given data set.

Accepted Answer

A) True 
 B)False

Question 17

A researcher computes a 2 $\times$ 2 chi-square test for independence.What is the critical value for this test at a .05 level of significance?

Accepted Answer

A) 3.84 
B) 5.99 
C) 7.81 
D) 9.49 
A) 3.84 
B) 5.99 
C) 7.81 
D) 9.49

Question 18

A researcher conducts two chi-square tests.The 2 $\times$ 2 chi-square was $\chi$2 = 3.82.The 2 $\times$ 3 chi-square was $\chi$2 = 5.02.Which chi-square test resulted in a decision to reject the null hypothesis at a .05 level of significance?

Accepted Answer

A) the 2 $\times$ 2 chi-square 
B) the 2 $\times$ 3 chi-square 
C) both chi-square tests results in a decision to reject the null hypothesis 
D) none;both chi-square tests result in a decision to retain the null hypothesis 
A) the 2 $\times$ 2 chi-square 
B) the 2 $\times$ 3 chi-square 
C) both chi-square tests results in a decision to reject the null hypothesis 
D) none;both chi-square tests result in a decision to retain the null hypothesis

Question 19

Which of the following is an example of a nonparametric test?

Accepted Answer

A) analysis of variance 
B) the t-tests 
C) chi-square test 
D) Pearson correlation 
A) analysis of variance 
B) the t-tests 
C) chi-square test 
D) Pearson correlation

Question 20

A researcher compares the frequency of participants who sleep primarily on their stomach,back,or side during the night.What is the critical value for a chi-square goodness-of-fit test at a .05 level of significance?

Accepted Answer

A) 2 
B) 3 
C) 3.84 
D) 5.99 
A) 2 
B) 3 
C) 3.84 
D) 5.99

A chi-square goodness-of-fit test with five levels of a categorical variable will have four degrees of freedom.

Which of the following is a key assumption for a chi-square goodness-of-fit test?

The larger the value of the chi-square test statistic,the more likely the discrepancy between observed and expected frequencies was due to chance or error.

A researcher computes a 2 $\times$ 4 chi-square test for independence.What are the degrees of freedom for this test?

A researcher computes a 3 $\times$ 5 chi-square test for independence.What are the degrees of freedom for this test?

The observed frequencies can be summarized,

As a general rule,the larger the degrees of freedom for a chi-square test,

A researcher computes a 2 $\times$ 3 chi-square test for independence.What is the critical value for this test at a .05 level of significance?

A key assumption for a chi-square goodness-of-fit test is that observed frequencies are independently recorded in each cell.

What is the key assumption for a chi-square goodness-of-fit test?

Which of the following is recorded using a chi-square goodness-of-fit test and a chi-square test for independence?

The phi coefficient can be used to estimate the effect size of a 2 $\times$ 2 chi-square test for independence.

To interpret a chi-square goodness-of-fit test,we compare observed and expected frequencies at each level of the categorical variable,and not across the levels of the categorical variable.

To summarize the chi-square test,report the test statistic,the degrees of freedom,and the p value.

For a 2 $\times$ 2 chi-square test for independence,the value of a phi coefficient will equal the value of Cramer's V for a given data set.

A researcher computes a 2 $\times$ 2 chi-square test for independence.What is the critical value for this test at a .05 level of significance?

A researcher conducts two chi-square tests.The 2 $\times$ 2 chi-square was $\chi$ ² = 3.82.The 2 $\times$ 3 chi-square was $\chi$ ² = 5.02.Which chi-square test resulted in a decision to reject the null hypothesis at a .05 level of significance?

Which of the following is an example of a nonparametric test?

A researcher compares the frequency of participants who sleep primarily on their stomach,back,or side during the night.What is the critical value for a chi-square goodness-of-fit test at a .05 level of significance?

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 chi-square goodness-of-fit test with five levels of a categorical variable will have four degrees of freedom.

Which of the following is a key assumption for a chi-square goodness-of-fit test?

The larger the value of the chi-square test statistic,the more likely the discrepancy between observed and expected frequencies was due to chance or error.

A researcher computes a 2 ×\times× 4 chi-square test for independence.What are the degrees of freedom for this test?

A researcher computes a 3 ×\times× 5 chi-square test for independence.What are the degrees of freedom for this test?

The observed frequencies can be summarized,

As a general rule,the larger the degrees of freedom for a chi-square test,

A researcher computes a 2 ×\times× 3 chi-square test for independence.What is the critical value for this test at a .05 level of significance?

A key assumption for a chi-square goodness-of-fit test is that observed frequencies are independently recorded in each cell.

What is the key assumption for a chi-square goodness-of-fit test?

Which of the following is recorded using a chi-square goodness-of-fit test and a chi-square test for independence?

The phi coefficient can be used to estimate the effect size of a 2 ×\times× 2 chi-square test for independence.

A researcher computes a 4 ×\times× 6 chi-square test for independence with a sample of 120 participants,with = 14.79.What is the effect size for this result?

To interpret a chi-square goodness-of-fit test,we compare observed and expected frequencies at each level of the categorical variable,and not across the levels of the categorical variable.

To summarize the chi-square test,report the test statistic,the degrees of freedom,and the p value.

For a 2 ×\times× 2 chi-square test for independence,the value of a phi coefficient will equal the value of Cramer's V for a given data set.

A researcher computes a 2 ×\times× 2 chi-square test for independence.What is the critical value for this test at a .05 level of significance?

A researcher conducts two chi-square tests.The 2 ×\times× 2 chi-square was χ\chiχ 2 = 3.82.The 2 ×\times× 3 chi-square was χ\chiχ 2 = 5.02.Which chi-square test resulted in a decision to reject the null hypothesis at a .05 level of significance?

Which of the following is an example of a nonparametric test?

A researcher compares the frequency of participants who sleep primarily on their stomach,back,or side during the night.What is the critical value for a chi-square goodness-of-fit test at a .05 level of significance?

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 $\times$ 4 chi-square test for independence.What are the degrees of freedom for this test?

A researcher computes a 3 $\times$ 5 chi-square test for independence.What are the degrees of freedom for this test?

A researcher computes a 2 $\times$ 3 chi-square test for independence.What is the critical value for this test at a .05 level of significance?

The phi coefficient can be used to estimate the effect size of a 2 $\times$ 2 chi-square test for independence.

For a 2 $\times$ 2 chi-square test for independence,the value of a phi coefficient will equal the value of Cramer's V for a given data set.

A researcher computes a 2 $\times$ 2 chi-square test for independence.What is the critical value for this test at a .05 level of significance?

A researcher conducts two chi-square tests.The 2 $\times$ 2 chi-square was $\chi$ ² = 3.82.The 2 $\times$ 3 chi-square was $\chi$ ² = 5.02.Which chi-square test resulted in a decision to reject the null hypothesis at a .05 level of significance?