1. Identify the class width, class
midpoints, and class boundaries for the given frequency distribution.

White Blood Cell Count for Males
Frequency

4.0 – 5.9 8

6.0 – 7.9 15

8.0 – 9.9 11

10.0 – 11.9 5

12.0 – 13.9 1

2. The frequency distribution
below shows arrival and delays for airplane flights

Arrival Delay min Frequency

(-60) – (-31) 14

(-30) – (-1) 26

0 – 29 9

30 – 59 2

60 – 89 2

Using the frequency distribution,
construct a histogram.

Which part of the histogram
depicts flights that arrived early?

Which part of the histogram
depicts flights that arrived late?

3. Listed below are the top 10
annual salaries (in millions of dollars) of TV personalities

38.9, 36.3, 34.1, 27.8, 15.2,
12.8, 12.6, 9.4, 9.1,9.2

Calculate the mean, median, mode
and mid-range.

Given that these are the top 10
salaries for TV personalities,

Do we know anything about the
salaries in TV personalities in general?

4. Listed below are the top 10
annual salaries (in millions of dollars) of TV personalities

41, 39, 38, 30, 21, 19, 18,
17,16.6, 15.2

Calculate the range, variance, and
Standard Deviation

Is the standard deviation of the
sample a good estimate of the variation of salaries of TV personalities in
general?