Exam 13: Finding Differences

Analysis of variance is used to test the difference between percentages between more than two groups.

Directional hypotheses are NOT feasible in the case of tests of statistically significant differences.

40% women video renters buy snacks; 65% male video renters buy snacks.A computed z of 4.5 is calculated.Assuming the critical value of z is + or - 1.96,this means:

When using XL Data Analyst to compare two mutually exclusive groups as to their respective percentage on a category of some variable,the approach sequence of commands is:

When a marketing researcher compares two groups of respondents to determine whether or not there are statistically significant differences between them,the researcher is considering them as though two independent surveys were administered,one for each group.

When using XL Data Analyst to compare two mutually exclusive groups as to their respective percentage on a category of some variable,you must define:

When testing for the differences between two percentages,the formula subtracts the differences between the two percentages and divides this difference by the standard error of the difference between two:

The proper command sequence to run ANOVA using your XL Data Analyst software is: COMPARE-3+ GROUP AVERAGES.

If a researcher wanted to know if there are differences between coupon users and non-coupon users,he/she could use tests for differences between two groups.

When using XL Data Analyst to compare two groups averages,the sequence of commands is:

In testing for significant differences between the averages of two variables,two variables should be measured on the same metric scale.

When the researcher is reporting differences found from ANOVA,the table presentation becomes more challenging as there can be overlaps of nonsignificant differences and significant differences.

When you are comparing the averages on two variables for significant differences,which of the following sequences of commands should you use in XL Data Analyst?

The formula for comparing differences between the percentages of two groups uses the percentages from each group in the numerator.

A researcher may want to compare:

To perform the test of significance of differences between two percentages,each representing a separate group (sample),the first step requires:

In reporting group differences to clients,marketing researchers often construct a group comparison table that summarizes the significant differences in an efficient manner.

The word "variance" in the name "analysis of variance" is misleading.

________ holds that within a product market,there are different types of consumers who have dissimilar requirements,and these differences can be the bases of marketing strategies.

When testing the difference between the percentages of two groups,XL Data Analyst performs this task by the command: Compare-4+ Group Percents.