Exam 20: Data Analysis: Analyzing Multiple Variables Simultaneously

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?

In a simple regression equation,the a value refers to the

What conclusion(s)can you make from the following cross tabulation?

Exhibit 20.3 Refer to Exhibit 20.3.What relationship can be inferred from the above table between family size and owing a microwave?

Cramer's V is scaled to range between

A factorial design is an ANOVA analysis that includes two or more dependent variables.

In which of the following situations would it be useful to test for differences between two groups?

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

Which statistical technique should you use to answer the question: "Is there a significant relationship between education level (a four-category ordinal variable)and whether or not consumers are aware that Firestone is a brand of tires?"

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?

Exhibit 20.3 Refer to Exhibit 20.3.The above table is an example of

Exhibit 20.3 Refer to Exhibit 20.3.The most appropriate way to calculate percentages in the above table to reflect cause and effect is by dividing

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

Olive Garden restaurants know that customers drink beverages for lunch and alcoholic drinks at supper.This is an example of an associative type of relationship?

A toy storeowner hypothesizes,at the 95% level of confidence,that parents spend less than $100 on toys per visit to her store.A sample is taken and the hypothesis test shows a z value of -1.65.We accept the hypothesis:

Exhibit 20.1 A researcher is interested in comparing the usage of bank debit cards by consumers in rural (r)and urban (u)areas.Each year for the past five years,she has surveyed 500 individuals (one-half urban,one-half rural)randomly selected from across the United States.She is specifically interested in any differences that may exist between the two groups with regard to usage.The results of the current study indicate that people in urban areas use bank debit cards 12 times per month on average ( ),while those in rural areas use bank cards 10 times per month on average ( ). Refer to Exhibit 20.1.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?

When a computed z-value (for a test for differences between two percentages),say 4.51,is larger than the standard z-value,say 1.96,then this amounts to

All other variables held constant,a 95% confidence interval will give us a narrower range than will a 99% confidence interval.

Graphic representations of the criterion variable as the function of each of the predictor variables are called

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