Question 1

In order to identify the pattern of the relationship in a bivariate table, we need to compute

Accepted Answer

A)  row percentages 
B)  column percentages 
C)  total percentages 
D)  row proportions 
A)  row percentages 
B)  column percentages 
C)  total percentages 
D)  row proportions

Question 2

A problem with large samples in the chi square test is that the test statistic

Accepted Answer

A)  increases at the same rate as sample size and trivial relationships may seem important 
B)  decreases as sample size increases and may cause Type I errors 
C)  fluctuates so much that the results are completely unreliable 
D)  is always elevated above the neutral area 
A)  increases at the same rate as sample size and trivial relationships may seem important 
B)  decreases as sample size increases and may cause Type I errors 
C)  fluctuates so much that the results are completely unreliable 
D)  is always elevated above the neutral area

Question 3

The Chi square test is based on the assumption that

Accepted Answer

A)  the variables are dependent 
B)  the expected frequencies are not produced by random chance 
C)  samples are non-random 
D)  the null hypothesis is true 
A)  the variables are dependent 
B)  the expected frequencies are not produced by random chance 
C)  samples are non-random 
D)  the null hypothesis is true

Question 4

If the row and column marginals of the expected frequencies are not equal to those of the observed frequencies

Accepted Answer

A)  an arithmetic error has occurred 
B)  Yate's correction must be applied 
C)  the null hypothesis must be rejected 
D)  switch to the ANOVA test 
A)  an arithmetic error has occurred 
B)  Yate's correction must be applied 
C)  the null hypothesis must be rejected 
D)  switch to the ANOVA test

Question 5

When cell frequencies are small and 2 x 2 tables are used in the chi square test, an adjustment to the value of chi square can be made by applying

Accepted Answer

A)  Yate's correction for continuity 
B)  a different value to the expected frequencies 
C)  a different value to the observed frequencies 
D)  any of the above 
A)  Yate's correction for continuity 
B)  a different value to the expected frequencies 
C)  a different value to the observed frequencies 
D)  any of the above

Question 6

According to the text, in the 2012 presidential election, women were more likely to vote for

Accepted Answer

A)  Romney 
B)  Bush 
C)  Clinton 
D)  Obama 
A)  Romney 
B)  Bush 
C)  Clinton 
D)  Obama

Question 7

For Chi square, a small sample is one in which

Accepted Answer

A)  many expected frequencies are less than 5 
B)  many observed frequencies are less than 5 
C)  N is less than 100 
D)  N is less than 50 
A)  many expected frequencies are less than 5 
B)  many observed frequencies are less than 5 
C)  N is less than 100 
D)  N is less than 50

Question 8

Yate's correction for small sample size

Accepted Answer

A)  reduces the value of the difference between fo and fe by .5 before squaring 
B)  increases the value of the difference between fo and fe by .5 before squaring 
C)  reduces the degrees of freedom by one half 
D)  increases the degrees of freedom by one half 
A)  reduces the value of the difference between fo and fe by .5 before squaring 
B)  increases the value of the difference between fo and fe by .5 before squaring 
C)  reduces the degrees of freedom by one half 
D)  increases the degrees of freedom by one half

Question 9

In a 2x2 table, if one cell frequency is known,

Accepted Answer

A)  all other cell frequencies are determined 
B)  two other cell frequencies are determined 
C)  one other cell frequency is determined 
D)  none of the other cell frequencies is determined 
A)  all other cell frequencies are determined 
B)  two other cell frequencies are determined 
C)  one other cell frequency is determined 
D)  none of the other cell frequencies is determined

Question 10

Chi square has been used to test the relationship between gender and support for abortion. The null hypothesis has been rejected. What may be concluded?

Accepted Answer

A)  support for abortion depends on gender 
B)  gender and support for abortion are not related 
C)  females are more supportive of abortion 
D)  males are more supportive of abortion 
A)  support for abortion depends on gender 
B)  gender and support for abortion are not related 
C)  females are more supportive of abortion 
D)  males are more supportive of abortion

Question 11

Which assumption about level of measurement is made for the Chi square test?

Accepted Answer

A)  all variables are at least ordinal in level of measurement 
B)  all variables are at least interval-ratio in level of measurement 
C)  all variables are nominal in level of measurement 
D)  at least one variable must be ordinal in level of measurement 
A)  all variables are at least ordinal in level of measurement 
B)  all variables are at least interval-ratio in level of measurement 
C)  all variables are nominal in level of measurement 
D)  at least one variable must be ordinal in level of measurement

Question 12

To conduct a chi square test, the variables must first be organized into a

Accepted Answer

A)  univariate table 
B)  bivariate table 
C)  list, which is then ranked 
D)  frequency distributions 
A)  univariate table 
B)  bivariate table 
C)  list, which is then ranked 
D)  frequency distributions

Question 13

Chi square is used to test relationships for their

Accepted Answer

A)  empirical importance 
B)  logical importance 
C)  statistical significance 
D)  theoretical importance 
A)  empirical importance 
B)  logical importance 
C)  statistical significance 
D)  theoretical importance

Question 14

A researcher reports that her obtained chi square of -17.56 is significant because it exceeds the critical Chi square of -3.841 for an alpha of .05 with 2 degrees of freedom. What mistake has been made?

Accepted Answer

A)  neither critical nor obtained Chi squares can have negative values 
B)  it is impossible to have only 2 degrees of freedom 
C)  it is impossible for obtained Chi square to exceed 10 
D)  a one-tailed test should have been used 
A)  neither critical nor obtained Chi squares can have negative values 
B)  it is impossible to have only 2 degrees of freedom 
C)  it is impossible for obtained Chi square to exceed 10 
D)  a one-tailed test should have been used

Question 15

Some potential difficulties arise in the chi square test when

Accepted Answer

A)  sample size is small 
B)  sample size is very large 
C)  many cells have expected frequencies of five or less 
D)  all of the above 
A)  sample size is small 
B)  sample size is very large 
C)  many cells have expected frequencies of five or less 
D)  all of the above

Question 16

The chi square test is frequently used because it is relatively easy to satisfy the model assumptions (step 1 of the five-step model). These assumptions require, in the case of chi square,

Accepted Answer

A)  a normal population distribution 
B)  no assumption about the shape of the sampling distribution 
C)  expected frequencies of equal value 
D)  a difference in expected and observed frequencies 
A)  a normal population distribution 
B)  no assumption about the shape of the sampling distribution 
C)  expected frequencies of equal value 
D)  a difference in expected and observed frequencies

Question 17

How many degrees of freedom does a 3 x 3 bivariate table have?

Accepted Answer

A)  8 
B)  6 
C)  4 
D)  3 
A)  8 
B)  6 
C)  4 
D)  3

Question 18

In the chi square test, expected frequencies are computed by

Accepted Answer

A)  adding the observed frequency to N and subtracting the number of cells 
B)  multiplying the observed frequencies by the row marginals and dividing by degrees of freedom 
C)  multiplying the proper row and column marginals for each cell and dividing by N 
D)  adding the proper row and column marginals together and dividing by N 
A)  adding the observed frequency to N and subtracting the number of cells 
B)  multiplying the observed frequencies by the row marginals and dividing by degrees of freedom 
C)  multiplying the proper row and column marginals for each cell and dividing by N 
D)  adding the proper row and column marginals together and dividing by N

Question 19

The popularity of the Chi Square test is largely due to

Accepted Answer

A)  easy computations 
B)  the fact that it can be computed only for interval-ratio level variables 
C)  the need to assume a normal sampling distribution 
D)  the relative ease with which the model assumptions can be satisfied 
A)  easy computations 
B)  the fact that it can be computed only for interval-ratio level variables 
C)  the need to assume a normal sampling distribution 
D)  the relative ease with which the model assumptions can be satisfied

Question 20

Which pattern of cell frequencies in a 2x2 table would indicate that the variables are independent?

Accepted Answer

A)  all cell frequencies are exactly the same 
B)  there are a different number of cases in each of the four cells 
C)  only the cells in the top row of the table have cases in them 
D)  there are no cases in any cell 
A)  all cell frequencies are exactly the same 
B)  there are a different number of cases in each of the four cells 
C)  only the cells in the top row of the table have cases in them 
D)  there are no cases in any cell

In order to identify the pattern of the relationship in a bivariate table, we need to compute

A problem with large samples in the chi square test is that the test statistic

The Chi square test is based on the assumption that

If the row and column marginals of the expected frequencies are not equal to those of the observed frequencies

When cell frequencies are small and 2 x 2 tables are used in the chi square test, an adjustment to the value of chi square can be made by applying

According to the text, in the 2012 presidential election, women were more likely to vote for

For Chi square, a small sample is one in which

Yate's correction for small sample size

In a 2x2 table, if one cell frequency is known,

Chi square has been used to test the relationship between gender and support for abortion. The null hypothesis has been rejected. What may be concluded?

Which assumption about level of measurement is made for the Chi square test?

To conduct a chi square test, the variables must first be organized into a

Chi square is used to test relationships for their

A researcher reports that her obtained chi square of -17.56 is significant because it exceeds the critical Chi square of -3.841 for an alpha of .05 with 2 degrees of freedom. What mistake has been made?

Some potential difficulties arise in the chi square test when

The chi square test is frequently used because it is relatively easy to satisfy the model assumptions (step 1 of the five-step model). These assumptions require, in the case of chi square,

How many degrees of freedom does a 3 x 3 bivariate table have?

In the chi square test, expected frequencies are computed by

The popularity of the Chi Square test is largely due to

Which pattern of cell frequencies in a 2x2 table would indicate that the variables are independent?

Introduction

Basic Descriptive Statistics Percentages, Ratios Rates, Tables, Charts Graphs

Measures of Central Tendency

Measures of Dispersion

The Normal Curve

Introduction to Inferential Statistics Sampling the Sampling Distribution

Hypothesis Testing I the One-Sample Case

Hypothesis Testing II the Two-Sample Case

Hypothesis Testing III: the Analysis of Variance

Bivariate Association for Nominal- and Ordinal-Level Variables

Association Between Variables Measured at the Interval-Ratio Level

Partial Correlation and

Filters

Exam 10: Hypothesis Testing Iv Chi Square

In order to identify the pattern of the relationship in a bivariate table, we need to compute

A problem with large samples in the chi square test is that the test statistic

The Chi square test is based on the assumption that

If the row and column marginals of the expected frequencies are not equal to those of the observed frequencies

When cell frequencies are small and 2 x 2 tables are used in the chi square test, an adjustment to the value of chi square can be made by applying

According to the text, in the 2012 presidential election, women were more likely to vote for

For Chi square, a small sample is one in which

Yate's correction for small sample size

In a 2x2 table, if one cell frequency is known,

Chi square has been used to test the relationship between gender and support for abortion. The null hypothesis has been rejected. What may be concluded?

Which assumption about level of measurement is made for the Chi square test?

To conduct a chi square test, the variables must first be organized into a

Chi square is used to test relationships for their

A researcher reports that her obtained chi square of -17.56 is significant because it exceeds the critical Chi square of -3.841 for an alpha of .05 with 2 degrees of freedom. What mistake has been made?

Some potential difficulties arise in the chi square test when

The chi square test is frequently used because it is relatively easy to satisfy the model assumptions (step 1 of the five-step model). These assumptions require, in the case of chi square,

How many degrees of freedom does a 3 x 3 bivariate table have?

In the chi square test, expected frequencies are computed by

The popularity of the Chi Square test is largely due to

Which pattern of cell frequencies in a 2x2 table would indicate that the variables are independent?

Introduction

Basic Descriptive Statistics Percentages, Ratios Rates, Tables, Charts Graphs

Measures of Central Tendency

Measures of Dispersion

The Normal Curve

Introduction to Inferential Statistics Sampling the Sampling Distribution

Hypothesis Testing I the One-Sample Case

Hypothesis Testing II the Two-Sample Case

Hypothesis Testing III: the Analysis of Variance

Bivariate Association for Nominal- and Ordinal-Level Variables

Association Between Variables Measured at the Interval-Ratio Level

Partial Correlation and

Filters