Boxplots from Larger Data Sets in Appendix B. In Exercises, use the given data sets.

Lead and IQ Use the same scale to construct boxplots for the full IQ scores (IQF) for the low lead level group and the high lead level group in Data Set 5.

Solution 36BSC

Step 1 of 3</p>

From the given information, the IQ scores of for the low lead level group are and the IQ scores of for the high lead level group are

Step 2 of 3</p>

The following MINITAB instruction set used to plot the box plot:

1) First enter the given data in columns such as C1 and C2

2) Select Graph, then select Box plot and then select the Simple option for multiple box plots

3) Enter C1and C2 in the Variables box

4) Click Ok.

The multiple box plots for the given data sets as follows:

The 5-number summary from the drawn box plot for the IQ scores of for the low lead level group is minimum data value 50, first quartile value is 84.75, second quartile value is 94, third quartile value is 101.25, and maximum value is 141.

The 5-number summary from the drawn box plot for the IQ scores of for the high lead level group is minimum data value 75, first quartile value is 80, second quartile value is 85, third quartile value is 93.5, and maximum value is 104.