# 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?

© BrainMass Inc. brainmass.com June 3, 2020, 6:06 pm ad1c9bdddfhttps://brainmass.com/statistics/frequency-distribution/frequency-distibution-problems-47985

#### Solution Summary

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