In each of the following situations, indicate the statistical analysis you would

Question

In each of the following situations, indicate the statistical analysis you would connect and the appropriate test or test statistic that should be used:

a.) Consumer preferences for Dove soap were obtained on an 11 point likert scale. The same consumers were then shown a commercial about Dove. After the commercial, preferences for Dove were again measured. Has the commercial been successful in inducing a change in preferences?

b.) Respondents in a survey of 1000 households were asked to indicate their frequency of domestic air travel on an interval scale. They were also classified “as being in high-, medium-, or low income categories. Is the frequency of domestic air travel related to income level?

Explanation / Answer

A) The discussion which has given in (a) belongs to paired data.

so, the student paired t test is suitable for finding the mean difference

B) The discussion which has give in (b) belogs to qualitaive data regardin two variables.Each variable is dived into sub groups.

so chi-square test is suitable

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