Exam 15: Testing for Differences Between Groups and for Predictive Relationships

If the number of coupons given out at shopping malls is used to predict the number of tickets that will be sold to a country and western band's performance at a local club,the number of coupons is the ____________________ variable.

When the on-time performance of airlines is used to predict the number of customer complaints in a regression equation,on-time performance is the ____ variable and the number of customer complaints is the ____ variable.

Statistical methods that permit the study of three or more variables at the same time are called ____________________ statistical analysis.

A study compares the means of two groups in which there are 45 males in Group 1 and 37 females in Group 2.The degrees of freedom for this study when using the t-test for the difference between means is ____.

The formula given below represents the method for calculating the ____.

If a researcher is interested in whether adult males purchase a product more frequently than adult females,univariate statistics would be used in the analysis of data.

In using the t-test to compare the difference between the means of two groups,the formula for determining the degrees of freedom is ____________________.

The null hypothesis when using the Z-test for the differences between the proportions of two groups is that ____________________.

In a regression equation,the beta coefficients indicate the effect on the dependent variable of a 1-unit increase in any of the independent variables.

Which of the following is computed by most regression programs and provides an indication of how much multicollinearity exists among a set of independent variables?

A researcher hypothesizes that males and females differ with respect to attitude toward sports sponsorships.To investigate this hypothesis that these two groups' attitudes differ,the researcher will use a ____.

Multivariate dependence techniques are variants of the ____________________.

In a brand awareness study,25 of a group of 35 males identify the brand correctly and 15 of a group of 35 females identify this brand correctly.The chi-square value for this study is approximately ____.

Consider the regression equation: Y = 98.3 +.35X₁ + 22.3X₂,the predicted value for Y when X₁ = 3 and X₂ = 5 is ____.

The chi-square test involves comparison of the observed frequencies of the groups with the expected frequencies of the groups.

Discuss the steps in interpreting a multiple regression output.

In the formula df = n - k,k represents the ____.

The test for the statistical significance of the regression model is the ____________________ test.

Which value provides a common metric allowing regression results to be compared to one another,regardless of what the original scale range may have been?

The equation,Y = a + βX,is the equation for the ____.