Exam 15: Chi-Square Test

Marginal frequencies are the sums of the frequencies in the corresponding ____________________ or columns.

The alternative hypothesis in a chi-square test is _____.

The alternative hypothesis for chi-square test states that ______.

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

If people in a gender and political party identification study were selected so that it consisted of a specified number of individuals of each gender (for instance,100 males and 100 females)who were then classified according to political party identification,the marginal frequencies for the party identification variable would still be random,but the marginal frequencies for the gender variable would be fixed.

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

The chi-square statistic is an index that reflects the overall difference between the observed and the expected frequencies.

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

The shape of the chi-square distribution depends on how many ____________________ are associated with it.

The chi-square test is typically used to analyze the relationship between two variables when both variables are qualitative in nature (that is,measured on a nominal level).

The following tables summarize responses and partial chi-square test results from a survey asking college students to respond to the following question: "Within the last 30 days,how often do you think the typical student at your school used alcohol?" Both men and women responded to this question. What is the expected frequency for males who believed the typical student at their school never used alcohol in the last 30 days?

There are different chi-square distributions depending on the degrees of freedom associated with them.

The chi-square test is typically used to analyze the relationship between two variables when

If the researcher suspects that the strength of the relationship between two variables in the population is .30 as indexed by Cramer's statistic,what sample size should she use in a study involving a 2 x 4 contingency table and an alpha level of .05 to achieve a power of .80?

Distinguish between the chi-square test of independence and the chi-square test of homogeneity.

The following tables summarize responses and partial chi-square test results from a survey asking college students to respond to the following question: "Within the last 30 days,how often do you think the typical student at your school used alcohol?" Both men and women responded to this question. Complete the table above for the computation of the chi-square statistic and calculate the value of chi-square.

There are different chi-square distributions depending on the _____ associated with them.

Which level of measurement is appropriate for the independent and dependent variables when using a chi-square analysis?

c² (1,N = 200)= 12.89,p < .05. How many cells would be in a contingency table for this example?

When the marginal frequencies of both variables under study are random,the chi-square test is known as the chi-square test of dependence.