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# Essentials of Marketing Research Study Set 6

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## Quiz 15 : Testing for Differences Between Groups and for Predictive Relationships

In most business research, the estimate of in a regression equation is most important.
Free
True False

False

The null hypothesis for an ANOVA test comparing the means of three groups is: 1 = 2 = 3.
Free
True False

True

In a regression equation, the slope of the line, , is the change in X that is due to a corresponding change of one unit of Y.
Free
True False

False

In multiple regression, the dependent variable must be continuous and interval-scaled.
True False
When the difference between two groups is measured, bivariate statistics are used.
True False
If the purpose of the regression analysis is forecasting, then standardized regression estimates are most appropriate.
True False
Choosing the right statistic boils down to what type and how many variables are involved in a particular research question or hypothesis.
True False
A Z-test for differences of proportions requires a sample size greater than 100.
True False
The chi-square test requires that the expected frequency in each cell of the contingency table be at least 30.
True False
Conceptually, ANOVA partitions the total variability into three types: total variation, between-group variation, and within-group variation.
True False
The chi-square test tests the significance of the relationship shown in an R X C contingency table in which R stands for row and C stands for column.
True False
The independent samples t-test tests the differences between means from no more than four independent samples or groups.
True False
In regression, the standardized Y-intercept term is always 1.
True False
A simple before-and-after test calls for a paired-samples t-test so long as the dependent variable is not continuous.
True False
Multivariate statistical analysis permits the researcher to consider more than one dependent variable at the same time.
True False
One way to test the significance of the relationship shown in a contingency tables is by means of the chi-square test.
True False