You are planning to study for your statistics examination with a group of classm

Question

You are planning to study for your statistics examination with a group of classmates, one of whom you particularly want to impress. This individual has volunteered to use Minitab to get the needed summary information, tables, and charts for a data set containing several numerical and categorical variables assigned by the professor for study purposes. This person contacts you about the printouts and exclaims: “I’ve got it all – the means, the medians, the standard deviations, the boxplots, the pie charts – for all our variables. The problem is, some of the printouts look weird like the boxplots for gender and for major and the pie charts for salary and for height. Also, I cannot understand why the professor said we can’t get the descriptive statistics for some of the variables – I got them for everything! See, the mean height is 68.3, the mean for salary is 54,327, the mean for gender is 1.5, and the mean for major is 4.6.”

Explanation / Answer

Gender and Major are the problematic casees

becauses these are nominal variables, we cannot have mean of gender, it might be representing 1 for male and 0 for female or vice versa, but its just an indicator and because its a quantitative variable you are able to calculate its mean, but for a nominal variable the mean doesnt make any sense. The same goes with Major as well

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