Share
Explore BrainMass

Frequency Distibution Problems

30.Determine the estimated mean of the following frequency distribution

class frequency
0 up to 5 2
5 up to 10 7
10 up to 15 12
15 up to 20 6
20 up to 25 3

93. compute the range, the standard deviation, and the variance

Each person who applies for an assembly job at carolina furniture inc is given a mechanical aptitude test. one part of the test involves assembling a dresser based on numbered instructions. a sample of the lengths of time it took 42 persons to assemble the dresser was organized into the following frquency distribution.

length of time(minutes) frequency

2 up to 4 4
4 up to 6 8
6 up to 8 14
8 up to 10 9
10 up to 12 5
12 up to 14 2

105.
a. determine the mean, median, and the standard deviation
b determine the coefficient of skewness using pearsons method
c. determine the coefficient of skewness using the software method

listed below are the commissions earned($000) last year by the sales representatives at the furniture patch.

$3.9 $5.7 $10.6 $13.0 $13.6 $15.1 $15.8 $17.1
14.4 17.6 22.3 38.6 43.2 87.7

254. a telephone number consist of seven digits, the first three representing the exchange. how many different telephone numbers are possible within the 537 exchange?

Solution Summary

Frequency distributions are investigated. The solution is detailed and well presented.

$2.19