Question

Find the value of Q3 for the following data set. 4 6 8 8 8 9 13 15

Answer 1

q3 = p75

Answer 2

there are 8 data points; 75% of 8 = 6; it is that value between the 6th and 7th data points

Answer 3

http://en.wikipedia.org/wiki/Quartile

Answer 4

(9+13)/2 = 22/2 = 11

Answer 5

oh so i just take the 6th and 7th add them then divide by 2? is tht how it is always?

Answer 6

that is how this one is since the percentage is an integer; if it had been a decimal, you simply round it up to the next spot

Answer 7

say it had been 6.3678; then you pick the 7th point

Answer 8

thank u amistre64

Answer 9

yep