A standardized exam was given to two groups of people. The first group
took the exam under adverse conditions, (room was too cold, room was dirty,
proctor swore at them) while the second group took it under normal conditions.
The data are given below. Determine the five basic statistics for the two
groups, find the fences, and determine if there are any outliers. Then
draw comparison boxplots for the two data sets. Are there any location
differences? Scale differences?
Consider
Carrie's baseball data. Obtain back-to-back stem-leaf plots of the
height of the hitters and pitchers. Discuss the plots.
3.
In the last problem, obtain the 5 basic descriptive statistics for the
heights of the hitters and pitchers. Obtain the fences, and determine if
there are any outliers. Then draw comparison boxplots for the two data
sets. Are there any location differences? Scale differences?
4.
Ten batteries from each of three brands (A, B, and C) were put on test
to determine their lifetimes (in hours). Obtain comparison dotplots. Use
these dotplots to obtain the 5 basic descriptive statistics for each brand.
Bigger means better here. Which brand seems best, if any?
