The attached file (Savings Rate) contains the yields for a money market account, a one-year certificate of deposit (CD), and a five-year CD for 23 banks in the metropolitan New York area, as of May 28, 2009. For each type of account:
a) Compute the first quartile (Q1), the third quartile (Q3), and the interquartile range.
b) List the five-number summary.
c) Construct a boxplot and describe its shape.
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