Answer Happy

Find the standard​ deviation, s, of sample data summarizedin the frequency distribution table given below by using theformula​ below, where x represents the class​ midpoint, frepresents the class​ frequency, and n represents the totalnumber of sample values.​ Also, compare the computed standarddeviation to the standard deviation obtained from the original listof data​ values,
9.0.
s=n∑f•x2−∑(f•x)2n(n−1)
Interval
20​-29
30​-39
40​-49
50​-59
60​-69
70​-79
Frequency
2
20
36
15
6
5
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Part 1
Standard
deviation=enter your response here
​(Round to one decimal place as​ needed.)