A company had 80 employees whose salaries are summarized in the frequency distribution below. Find the standard deviation. Find the standard deviation of the data summarized in the given frequency...

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A company had 80 employees whose salaries are summarized in the frequency distribution below. Find the standard deviation. Find the standard deviation of the data summarized in the given frequency distribution.

Salary Number of Employees


5,001 -10,000 11


10,001 - 15,000 13


15,001 - 20,000 20


20,001 - 25,000 17


25,001 - 30,000 13

Answered Same DayDec 22, 2021

Answer To: A company had 80 employees whose salaries are summarized in the frequency distribution below. Find...

David answered on Dec 22 2021
115 Votes
We calculate the midpoints of each class using formula Lower + Upper2
X Frequency Freq × X Freq × X2
7500.5 11 82505.5 618832502.75
12500.5 13 162506.5 2031412503.25
17500.5 20 350010 6125350005
22500.5 17 382508.5 8606632504.25
27500.5 13 357506.5 9831607503.25
k∑
i=1
fi =...
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