A Company Had 80 Employees Whose Salaries Are Summarized In The Frequency Distribution Below

23 May A Company Had 80 Employees Whose Salaries Are Summarized In The Frequency Distribution Below

Posted at 05:46h in Essay Writing Services by Blogger

3. 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

4. The heights of a group of professional basketball players are summarized in the frequency distribution below. Find the standard deviation.
Height (in.) Frequency
70-71 4
72-73 9
74-75 18
76-77 11
78-79 9
80-81 4
82-83 1
heights frequency class midpoint x fx fx^2
70-71 4 70.5 282 19881
72-73 9 72.5 652.5 47306.25
74-75 18 74.5 1341 99904.5
76-77 11 76.5 841.5 64374.75
78-79 9 78.5 706.5 55460.25
80-81 4 80.5 322 25921
82-83 1 82.5 82.5 6806.25
totals 56 4228 319654

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