Find the standard deviation using 2 methods. And identify it is a grouped data or ungrouped data

MATLAB: An Introduction with Applications
6th Edition
ISBN:9781119256830
Author:Amos Gilat
Publisher:Amos Gilat
Chapter1: Starting With Matlab
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Find the standard deviation using 2 methods. And identify it is a grouped data or ungrouped data

Class category
frequency
Cf
80-84
40
75-79
37
70-74
34
65-69
5.
30
60-64
25
55-59
6.
19
50-54
8.
10
45-49
2.
2.
N =
40
Transcribed Image Text:Class category frequency Cf 80-84 40 75-79 37 70-74 34 65-69 5. 30 60-64 25 55-59 6. 19 50-54 8. 10 45-49 2. 2. N = 40
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