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The following is a set of data from a sample of n=7. 18 19 17 20...

The following is a set of data from a sample of n=7.

18 19 17 20 15 13 6 

​(a) Compute the first quartile ​(Upper Q1​), the third quartile ​(Upper Q3​), and the interquartile range.

​(b) List the​ five-number summary.

​(c) Construct a boxplot and describe the shape.

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