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

In the regression equation, Y = a + $\beta$ X, Y is the ____.

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.

In a regression equation, the slope of the line, $\beta$ , is the change in X that is due to a corresponding change of one unit of Y.

In most business research, the estimate of $\alpha$ in a regression equation is most important.

The statistical significance of a regression model is determined using the ____.

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

Multiple regression analysis includes a single independent variable but several dependent variables.

The formula for the chi-square test uses ____.

What is another form of the alternative hypothesis when testing the difference between the means of the two groups?

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 ____.

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

Suppose that you are using a 9-point rating scale to compare men who have an annual income over $50,000 (Group 1) with men who have an annual income less than or equal to $50,000 (Group 2) with regard to their assessment of a new product. There are forty men in Group 1 and they have a mean of 7 and a standard deviation of 2.5, while the 35 men in Group 2 have a mean of 5 and a standard deviation of 1.4. What is the approximate value of t using the t-test?

Cross-tabulation tables typically provide an easy, intuitive way of understanding data.

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?

If the regression equation is: Y = -4.2 + 3.6 X, then the expected score for Y when X is 4 would be ____.

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?

Consider this regression equation: Y = 24.35 - 14.2 X. Here, 24.35 is the ____, and -14.2 is the ____.

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

In the regression equation, Y = a + $\beta$ X, a is the symbol for the ____.

What is ANOVA and when is it the appropriate statistical technique? What test is used to determine significance?