Question: A botanist grew 15 pepper plants on the same greenhouse bench. After 21 days, she measured the total stem length (cm) of each plant, and

A botanist grew 15 pepper plants on the same greenhouse bench. After 21 days, she measured the total stem length (cm) of each plant, and obtained the following values:

(a) Construct a dotplot for these data, and mark the positions of the quartiles.
(b) Calculate the interquartile range.
(c) Are there any outliers? Briefly justify your answer.

12.4 12.2 13.4 10.9 12.2 12.1 11.8 13.5 12.0 14.1 12.7 13.2 12.6 11.9 13.1

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