Posted by **sha** on Saturday, May 15, 2010 at 4:32pm.

please help! i know exactly how to find the mean but i am having a problem finding the midpoints. couldn't get them right :(

salary employees

5,001- 10,000 == 16

10,001-15,000 == 15

15001-20,000 == 11

20,001-25,000 == 15

25,001-30,000 == 23

- stats:find the mean -
**drwls**, Sunday, May 16, 2010 at 7:49am
If you want the mean salary, you can only get an approximate value since you only have histogram data (the number per salary interval). Assume that the number 16 applies to a salary at the midpioit of the first interval ($7500), etc.

The mean will be

(16*7500 + 15*12500 + 11*(17,500) + 15*22500 + 23*27,500)/(16+15+11+15+23) = $18,375

- stats:find the mean -
**Anonymous**, Sunday, May 16, 2010 at 12:10pm
thanks a bunch!! =D

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