Assignment
The given the frequency distribution summarizes cabin sale prices in Big Bear City for June 2014
a. What are the class midpoints?
b. What is the mean, median, and
standard deviation for sale prices?
c. What is the usual range of prices
(within two standard deviations of the mean)?
The weekly salaries (in U.S. dollars) of 24 randomly selected employees of a company are shown below
310 320 450 460 470 500 520 540 580 600 650 700 700
840 870 900 1000 1200 1250 1300 1400 1720 2500 3700
a. Find the mean, median and mode (if any).
b. Find the range, standard deviation, variance, and quartiles.
c. Construct a Boxplot for the data.
d. Which measure of center best describes the data set (in your opinion)? Justify your answer.
e. Find the usual range (two standard deviations from the mean).
f. Are there any outliers?
g. Are there any unusual values.
h. Describe the difference between unusual values and outliers.
|
Sale Price (thousands $)
|
Frequency
|
|
80.0 - 110.0
|
2
|
|
111.0- 141.0
|
5
|
|
142.0- 172.0
|
7
|
|
173.0- 203.0
|
10
|
|
204.0- 234.0
|
3
|
|
235.0- 265.0
|
1
|