What effect does the minimum amount have on the interest rate being offered on 3-month certificates of

Question:

What effect does the minimum amount have on the interest rate being offered on 3-month certificates of deposit (CDs)? The following are advertised rates of return, y, for a minimum deposit of $500, $1000, $2500, $5000, or $10,000, x. (Note that x is in $100 and y is annual percentage rate of return.)

a. Prepare a dotplot of the five sets of data using a common scale.
b. Prepare a 5-number summary and a boxplot of the five sets of data. Use the same scale for the boxplots.
c. Describe any differences you see among the three sets of data. If you are using a computer or calculator for Ex. 3.10, try the commands on pages 126.