Question 1

The chi-square test is based on the assumption that the observations are independently sampled from the population of all possible observations.

Accepted Answer

A) True 
 B)False

Question 2

Yates' correction for continuity involves which of the following procedures?

Accepted Answer

A) subtracting 5 from the absolute value of ?Oj-Ej? 
B) subtracting .5 from the absolute value of ?Oj-Ej? 
C) subtracting .5 from the absolute value of ?Oj-Ej?2 
D) subtracting 5 from the absolute value of ?Oj-Ej?2 
A) subtracting 5 from the absolute value of ?Oj-Ej? 
B) subtracting .5 from the absolute value of ?Oj-Ej? 
C) subtracting .5 from the absolute value of ?Oj-Ej?2 
D) subtracting 5 from the absolute value of ?Oj-Ej?2

Question 3

In chi-square analysis,the sum of the discrepancy scores are combined to create an index known as the ____________________ estatistic.

Accepted Answer

The answer of In chi-square analysis,the sum of the discrepancy...

Question 4

Which of the following is an appropriate and viable approach to statistically analyzing the nature of the relationship for a statistically significant chi-square test?

Accepted Answer

A) Goodman's procedure 
B) Fisher's exact test 
C) modified Bonferroni procedure 
D) Cramer's statistic 
A) Goodman's procedure 
B) Fisher's exact test 
C) modified Bonferroni procedure 
D) Cramer's statistic

Question 5

When the degrees of freedom of a chi-square statistic are small (for example,2),the shape of the sampling distribution will be _______.

Accepted Answer

A) extremely positively skewed 
B) highly negatively skewed 
C) very normal 
D) unknown 
A) extremely positively skewed 
B) highly negatively skewed 
C) very normal 
D) unknown

Question 6

Which of the following is not an assumption of the chi-square test?

Accepted Answer

A) The observations are independently drawn from the population 
B) The observations are randomly sampled from the population 
C) The observed frequency of any cell must be greater than zero 
D) The expected frequency of each cell is nonzero 
A) The observations are independently drawn from the population 
B) The observations are randomly sampled from the population 
C) The observed frequency of any cell must be greater than zero 
D) The expected frequency of each cell is nonzero

Question 7

Yates' correction for continuity should not be used because it tends to reduce statistical power while adding little control over Type I errors.

Accepted Answer

A) True 
 B)False

Question 8

Research has found that Fisher's Exact Test,an alternative method for testing the relationship between two variables in 2 X 2 tables,is less powerful than the chi-square test.

Accepted Answer

A) True 
 B)False

Question 9

In order to calculate an expected frequency for a given cell,you divide the total of the column (the column marginal frequency)in which it appears by the total number of observations and then multiply this by the total of the row (the row marginal frequency)in which the cell appears.

Accepted Answer

A) True 
 B)False

Question 10

The test of the chi-square statistic applies to the sample as a whole and provides useful information as to which cells are responsible for rejecting the null hypothesis.

Accepted Answer

A) True 
 B)False

Question 11

Which of the following conditions would necessitate choosing a test other than chi-square test of independence?

Accepted Answer

A) observations are within subjects. 
B) the independent variable is qualitative. 
C) the dependent variable is qualitative. 
D) the observations on each variable are between subjects in nature. 
A) observations are within subjects. 
B) the independent variable is qualitative. 
C) the dependent variable is qualitative. 
D) the observations on each variable are between subjects in nature.

Question 12

Because the chi-square test is typically used to analyze the relationship between two qualitative variables,it cannot be used when one or both variables are quantitative.

Accepted Answer

A) True 
 B)False

Question 13

When trying to decide the sample size necessary to achieve a particular level of statistical power,what information is needed?

Accepted Answer

A) size of the contingency table 
B) population value of Cramer's statistic 
C) the alpha level 
D) all of these 
A) size of the contingency table 
B) population value of Cramer's statistic 
C) the alpha level 
D) all of these

Question 14

AS N increases results of the chi-square test become more similar to which of the following alternatives?

Accepted Answer

A) Fisher's exact test 
B) Yate's correction for continuity 
C) the phi coefficient 
D) Cramer's statistic 
A) Fisher's exact test 
B) Yate's correction for continuity 
C) the phi coefficient 
D) Cramer's statistic

Question 15

For the example in question 11,which is the more appropriate statistical test to analyze the data?

Accepted Answer

A) independent groups t test. 
B) one-way between subjects analysis of variance 
C) Pearson correlation coefficient 
D) one-way within subjects analysis of variance 
A) independent groups t test. 
B) one-way between subjects analysis of variance 
C) Pearson correlation coefficient 
D) one-way within subjects analysis of variance

Question 16

The entries within the cells of a contingency table represent the number of individuals in the sample who are characterized by the corresponding levels of the _____ and are referred to as _____.

Accepted Answer

A) marginal frequencies;observed frequencies 
B) contingency table;unexpected frequencies 
C) variables;expected frequencies 
D) variables;observed frequencies 
A) marginal frequencies;observed frequencies 
B) contingency table;unexpected frequencies 
C) variables;expected frequencies 
D) variables;observed frequencies

Question 17

The chi-square statistic reflects the overall difference between the ____________________ and the expected frequencies.

Accepted Answer

The answer of The chi-square statistic reflects the overall difference...

Question 18

Each unique combination of variables in a contingency table is referred to as a cell.

Accepted Answer

A) True 
 B)False

Question 19

16.c2 (1,N = 200)= 12.89,p < .05.What is the value for the degrees of freedom?

Accepted Answer

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

Question 20

A chi-square test can only be used to analyze the relationship between qualitative variables.

Accepted Answer

A) True 
 B)False

The chi-square test is based on the assumption that the observations are independently sampled from the population of all possible observations.

Yates' correction for continuity involves which of the following procedures?

In chi-square analysis,the sum of the discrepancy scores are combined to create an index known as the ____________________ estatistic.

Which of the following is an appropriate and viable approach to statistically analyzing the nature of the relationship for a statistically significant chi-square test?

When the degrees of freedom of a chi-square statistic are small (for example,2),the shape of the sampling distribution will be _______.

Which of the following is not an assumption of the chi-square test?

Yates' correction for continuity should not be used because it tends to reduce statistical power while adding little control over Type I errors.

Research has found that Fisher's Exact Test,an alternative method for testing the relationship between two variables in 2 X 2 tables,is less powerful than the chi-square test.

In order to calculate an expected frequency for a given cell,you divide the total of the column (the column marginal frequency)in which it appears by the total number of observations and then multiply this by the total of the row (the row marginal frequency)in which the cell appears.

The test of the chi-square statistic applies to the sample as a whole and provides useful information as to which cells are responsible for rejecting the null hypothesis.

Which of the following conditions would necessitate choosing a test other than chi-square test of independence?

Because the chi-square test is typically used to analyze the relationship between two qualitative variables,it cannot be used when one or both variables are quantitative.

When trying to decide the sample size necessary to achieve a particular level of statistical power,what information is needed?

AS N increases results of the chi-square test become more similar to which of the following alternatives?

For the example in question 11,which is the more appropriate statistical test to analyze the data?

The entries within the cells of a contingency table represent the number of individuals in the sample who are characterized by the corresponding levels of the _ and are referred to as _.

The chi-square statistic reflects the overall difference between the ____________________ and the expected frequencies.

Each unique combination of variables in a contingency table is referred to as a cell.

16.c² (1,N = 200)= 12.89,p < .05.What is the value for the degrees of freedom?

A chi-square test can only be used to analyze the relationship between qualitative variables.

Introduction and Mathematical Preliminaries

Frequency and Probability Distributions

Measures of Central Tendency and Variability

Percentiles,percentile Ranks,standard Scores,and the Normal Distribution

Pearson Correlation and Regression: Descriptive Aspects

Probability

Estimation and Sampling Distributions

Hypothesis Testing: Inferences About a Single Mean

Principles of Research Design and Statistical Preliminaries for Analyzing Bivariate Relationships

Independent Groups T-Test

Correlated Groups T-Test

One-Way Repeated Measures Analysis of Variance

Pearson Correlation and Regression: Inferential Aspects

Nonparametric Statistics

Two-Way Between-Subjects Analysis of Variance

Overview and Extension: Statistical Tests for More Complex Designs

Filters

Exam 14: Chi-Square Test

The chi-square test is based on the assumption that the observations are independently sampled from the population of all possible observations.

Yates' correction for continuity involves which of the following procedures?

In chi-square analysis,the sum of the discrepancy scores are combined to create an index known as the ____________________ estatistic.

Which of the following is an appropriate and viable approach to statistically analyzing the nature of the relationship for a statistically significant chi-square test?

When the degrees of freedom of a chi-square statistic are small (for example,2),the shape of the sampling distribution will be _______.

Which of the following is not an assumption of the chi-square test?

Yates' correction for continuity should not be used because it tends to reduce statistical power while adding little control over Type I errors.

Research has found that Fisher's Exact Test,an alternative method for testing the relationship between two variables in 2 X 2 tables,is less powerful than the chi-square test.

In order to calculate an expected frequency for a given cell,you divide the total of the column (the column marginal frequency)in which it appears by the total number of observations and then multiply this by the total of the row (the row marginal frequency)in which the cell appears.

The test of the chi-square statistic applies to the sample as a whole and provides useful information as to which cells are responsible for rejecting the null hypothesis.

Which of the following conditions would necessitate choosing a test other than chi-square test of independence?

Because the chi-square test is typically used to analyze the relationship between two qualitative variables,it cannot be used when one or both variables are quantitative.

When trying to decide the sample size necessary to achieve a particular level of statistical power,what information is needed?

AS N increases results of the chi-square test become more similar to which of the following alternatives?

For the example in question 11,which is the more appropriate statistical test to analyze the data?

The entries within the cells of a contingency table represent the number of individuals in the sample who are characterized by the corresponding levels of the _____ and are referred to as _____.

The chi-square statistic reflects the overall difference between the ____________________ and the expected frequencies.

Each unique combination of variables in a contingency table is referred to as a cell.

16.c2 (1,N = 200)= 12.89,p < .05.What is the value for the degrees of freedom?

A chi-square test can only be used to analyze the relationship between qualitative variables.

Introduction and Mathematical Preliminaries

Frequency and Probability Distributions

Measures of Central Tendency and Variability

Percentiles,percentile Ranks,standard Scores,and the Normal Distribution

Pearson Correlation and Regression: Descriptive Aspects

Probability

Estimation and Sampling Distributions

Hypothesis Testing: Inferences About a Single Mean

Principles of Research Design and Statistical Preliminaries for Analyzing Bivariate Relationships

Independent Groups T-Test

Correlated Groups T-Test

One-Way Repeated Measures Analysis of Variance

Pearson Correlation and Regression: Inferential Aspects

Nonparametric Statistics

Two-Way Between-Subjects Analysis of Variance

Overview and Extension: Statistical Tests for More Complex Designs

Filters

The entries within the cells of a contingency table represent the number of individuals in the sample who are characterized by the corresponding levels of the _ and are referred to as _.

16.c² (1,N = 200)= 12.89,p < .05.What is the value for the degrees of freedom?