Answers
To examine relationships between a categorical and a numerical variable, we can use
box-whisker plots
Coding all Business majors as 1 and all others as 0 in a data set illustrates the use of
dummy variables
The average amount Abby spends on Starbucks is = (6 + 12 + 14 + 10 + 15 + 12 + 8)/7 = 11
True
standard deviation = (sum of the squared deviations from the sample mean / (25-1)) ^ 0.5
i.e 100 = sum of the squared deviations from the sample mean / 24
i.e sum of the squared deviations from the sample mean = 2400
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