Frequency Distibution Problems
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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?
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Solution Summary
Frequency distributions are investigated. The solution is detailed and well presented.
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