Exam 18: Analysis and Interpretation Multiple Variables Simultaneously

Compare and contrast the use of analysis of variance (ANOVA) versus conducting a series of t-tests to examine differences across groups.

If an organization selects two towns for a market study (one for the test and the other as a control) and measures the amount of trash in pounds per household, it must first determine the equality of the two towns using a test of

Which of the following statements about the interpretation of correlations is NOT true?

Correlation analysis, along with other mathematical procedures, can be used to establish causality.

In testing a multiple regression equation for statistical significance, the first step involves

A brand product manager needs to know if men and women hold different attitudes about her product. What test should the brand product manager use?

The coefficient of determination represents the relative proportion of the total variation in the outcome variable that can be accounted for by the predictor variable in the regression.

A gas station wants to compare a group of consumers' overall perceptions of service with overall perceptions of service for a nearby competitor. This situation calls for the use of

A research study involving the research question: "On the basis of a survey of husband-wife households, is there a significant difference between the mean attitude score of husbands and that of wives toward our product?" will involve a test

Which of the following is a technique that measures the association between a criterion variable and one or more independent variables?

To determine the degree to which the variables in a cross-tabulation analysis are independent of one another, a researcher should use

In the chi-square analysis, the greater the differences between the observed frequencies and the expected frequencies, the less likely it is that there will be a statistically significant relationship.

A statistic used to measure the strength of relationship between categorical variables is called a Cramer's V.

Let's assume there are sophomores, juniors, and seniors in your marketing research class and we want to know if their average GPAs differ. What is the proper statistical test?

A series of cross-tabulations between an outcome variable and several possible causal variables presented in a single table on a single page is known as a(n)

Which of the assumptions listed below are necessary in order for the coefficients in a partial regression equation to be interpreted as the average change in the criterion variable associated with a unit change in the appropriate predictor variable holding other predictor variables constant?

If a = 0.152 and b = 1.32, the simple regression equation is

Refer to Scenario 18.1. Given that the critical value that the test statistic is to be compared with is equal to 1.645 at a 90% significance level, which of the following statements are true?

The error term in the regression model represents all factors that determine criterion variable that are not part of the model.

If the F-value in ANOVA produces a significantly high p-value (a.k.a. "Sig." in SPSS) of 0.11 or more, then it is appropriate to proceed with a post-hoc test (e.g., Duncan).