SOLUTION: Find the mean for the grouped data in the following table. Report the mean to the nearest tenth. Show work. (Extra space provided in table for scratch work.) 40 Exam Scores Int

Algebra ->  Probability-and-statistics -> SOLUTION: Find the mean for the grouped data in the following table. Report the mean to the nearest tenth. Show work. (Extra space provided in table for scratch work.) 40 Exam Scores Int      Log On


   

Question 846487: Find the mean for the grouped data in the following table. Report the mean to the nearest tenth. Show work. (Extra space provided in table for scratch work.)
40 Exam Scores
Interval Frequency

49.5 - 59.5 4
59.5 - 69.5 6

69.5 - 79.5 10
79.5 - 89.5 12

89.5 - 99.5 8
Answer by ewatrrr(24785) About Me  (Show Source):
You can put this solution on YOUR website!
 

Hi,

Note: 49.5+%2B+%2859.5-49.5%2F2%29+=+54.5  

49.5 - 59.5 4	54.5	4	218	

59.5 - 69.5 6	65.5	6	393	

69.5 - 79.5 10	75.5	10	755	

79.5 - 89.5 12	84.5	12	1014	

89.5 - 99.5 8	94.5	8	756	

		40	            3136  and 3136%2F40 = m = 78.4