SOLUTION: Approximate the mean of the grouped data. Phone call (per day) Frequency 8-11 17 12-15

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Question 1053821: Approximate the mean of the grouped data.
Phone call (per day) Frequency
8-11 17
12-15 29
16-19 16
20-23 46
24-27 34
Answer by ewatrrr(24785) About Me  (Show Source):
You can put this solution on YOUR website!


Hi  

	midPt	#		

8-11	9.5	17	161.5	

12-15	13.5	29	391.5	

16-19 	17.5	16	280	

20-23 	21.5	46	989	

24-27 	25.5	34	867	

		142	2689	

		2689/142 =	18.93661972	mean