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use the raw data of 24 tobacco workers to create 5 classes: 55, 51, 44, 42,...

use the raw data of 24 tobacco workers to create 5 classes: 55, 51, 44, 42, 37, 38, 36, 39, 44, 43, 40, 40, 32, 39, 41, 58, 42, 39 40, 46, 37, 35, 41, 39. Then findthe tally, frequency, class boundary, class mid point, relative frequencies,percentage and cumulative frequencies. Plot on a bar graph after.

Math   Statistics-And-Probability   
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Answer #1
Class boundary Frequency (f) Mid point=(upper class boundary+lower class boundary)/2 Relative frequency(R.F.)=f/24 Percentage=R.F.*100 Cumulative Frequency
Maximum= 58 32-37.2 5 34.6 0.2083 20.83 5
Minimum= 32 37.2-42.4 12 39.8 0.5 50 17
Range= 26 42.4-47.6 4 45 0.1667 16.67 21
No. of classes (k)= 5 47.6-52.8 1 50.2 0.0417 4.17 22
Width=Range/k= 5.2 52.8-58 2 55.4 0.0833 8.33 24

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