Xami H.

asked • 12/10/20

standard deviation

A.   The dataset below shows the gross earnings in US dollars per week of twenty men, .

150, 55, 82, 107, 102, 78, 154, 85, 123, 66, 58, 122, 120, 83, 115, 69, 99, 94, 144, 55


1)     Calculate the mean and standard deviation of the male earnings of the data given above

2)     Give the interpretation of the standard deviation you got

Patrick B.

I have uploaded the spreadsheet for you in the RESROUCES section under this link. I have also uploaded the word document containing the script. However you must rename it to *.docm because it would not allow the uploading of the macro enabled document. THe online calculator is at calculator dot net / standard-deviation-calculator dot html
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12/10/20

1 Expert Answer

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Patrick B. answered • 12/10/20

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The mean average is 98.05 and the standard deviation is 30.998259713461 < 31


I get these results from THREE different sources : excel spreadsheet, document script,

and online calculator


stats in the range (98-31, 98+31) = (67,129) are ABOUT 1 standard deviation from the mean average,

13 out of 20 of the stats lie within this range, which is 13/20 = 65%.

This is consistent with the Empirical Rule, which stats roughly 2/3 of the data lies within

1 standard deviation form the mean average.

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