1. To get the best deal on a CD player, Tom called

1. To get the best deal on a CD player, Tom called eight appliance
stores and asked the cost of a specific model. The prices he was quoted
are listed below:
                $ 218   $ 125   $ 381   $ 187   $ 231   $ 213   $ 309   $ 230        Find the Standard deviation

2. When investigating times required for drive-through service, the
following results (in seconds) were obtained. Find the range, variance,
and standard deviation for each of the two samples, then compare the two
sets of results.
 Wendy's         110  113  133   198  124  120  154  110
MacDonald's    105  116  131  176  118  110  135  137            

3. A company had 80 employees whose salaries are summarized in the
frequency distribution below. Find the standard deviation. Find the
standard deviation of the data summarized in the given frequency
distribution.

Salary                 Number of Employees
5,001 -10,000     11
10,001 - 15,000     13  
15,001 - 20,000     20
20,001 - 25,000     17
25,001 - 30,000     13                             

4. The heights of a group of professional basketball players are summarized in
the frequency distribution below. Find the standard deviation.

Height (in.)    Frequency
70-71                  4
72-73                  9
74-75                 18
76-77                 11
78-79                 9
80-81                 4
82-83                 1                                      

Case Assignment Expectations:
Use information from the modular background readings as well as any good
quality resource you can find. Please cite all sources and provide a
reference list at the end of your paper.
The following items will be assessed in particular:
Your ability to describe the information provided by the Standard Deviation.
Your ability to use the Standard Deviation to calculate the percentage of occurrence of a variable either above or below a particular value.
Your ability to describe a normal distribution as evidenced by a bell shaped curve.
Your ability to prepare a distribution chart from a set of data.