Question 410115
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Hi
mean = 7.9473   (151/19)
median = 8     |(19+1)/2  or tenth term
mode = 4  (most frequent)
midrange (16-3)/2 = 7.5
1st quartile = 4      |(19+1)/4 or the 5th term  | 25% are less than this
3rd  quartile = 9     |25% are greater than this 

3	4	4	4	4	6	6	7	7	8
8	9	9	9	11	12	12	12	16