Exam 17: Chi-Square Tess

Legal researchers were interested in whether a rape defendant's perceived guilt depends on the type of argument introduced by his defense attorney.Researchers classified each defense by whether or not it introduced the idea that the female victim was asking for the encounter-the "she shouldn't have worn that short skirt" defense.In a simulated juror situation, the researchers asked each of the 20 participating mock jurors to rate the guilt of the defendant on a scale from 1 to 7.This score is a _____ dependent variable, which means that the data can be analyzed using a _____ test.

With a p level of 0.05, a chi-square test for goodness-of-fit for which there are three categories would have _____ degrees of freedom, and the critical value for the chi square would be _____.

A researcher decides to examine whether people prefer milk chocolate or dark chocolate.A chi-square test for goodness-of-fit is conducted.What is the critical cutoff for a test with a p level of 0.05?

When working with two nominal variables, each with two levels, a chi-square test for independence would be used.

An effective way to understand the size of the relation between two variables assessed using the chi-square statistic is to:

Which of these correctly states the results of a chi-square test reported in APA format?

When working with two nominal variables, a chi-square test for independence would be used.

When examining adjusted standardized residuals following a chi-square analysis, what minimum calculated value indicates that the cell's observed frequency is different from its expected frequency?

Corsi et al.(2007) conducted a study of the factors mediating whether injection drug users enter a drug treatment program.One of the factors they explored was marital status.The researchers found that 66 of 135 married (or partnered) drug users entered a treatment program and 67 of 185 single drug users entered a treatment program.They also found that the relative likelihood of entering a treatment program if a user is married is 1.35.This means that:

A college instructor is interested in whether assigning mandatory homework affects students' grades.Since she is currently teaching two sections of the same class, the instructor assigns homework to one of the classes and just recommends homework problems to the second class.Then she determines the number of people in each class that will receive an A, B, C, D, or F on the final exam.What type of statistical test should the instructor use to analyze her data?

The values in the cells of a chi-square test for goodness-of-fit are:

A college instructor is interested in whether assigning mandatory homework affects students' grades.Since she is currently teaching two sections of the same class, the instructor assigns homework to one of the classes and just recommends homework problems to the second class.Then she determines the number of people in each class who will receive an A, B, C, D, or F on the final exam.What would be the appropriate statistical advice to give to the instructor?

Legal researchers were interested in whether a rape defendant's perceived guilt depends on the type of argument introduced by his defense attorney.Researchers classified each defense by whether it introduced the idea that the female victim was asking for the encounter-the "she shouldn't have worn that short skirt" defense.In a simulated juror situation, the researchers counted the number of guilty verdicts "returned" by the 20 participating mock jurors.This number is a _____ dependent variable, which means that the data can be analyzed using a _____ test.

Interpreting the effect size for a chi-square test depends on the degrees of freedom for _____ in the contingency table.

Even with scale data, one may choose to run a nonparametric test because there is a small sample size and the data are skewed.

The adjusted standardized residual is calculated as the difference between the observed and expected frequency in a given cell:

A chi-square test for independence is an appropriate statistical test to use when the study has:

When working with one nominal variable, a chi-square test for goodness-of-fit would be used.

When we calculate relative risk, we are essentially determining the ratio of two:

One benefit of using a nonparametric test rather than a parametric test is that: