00:01
So in this question, you want the 70th percentile of the 20 numbers.
00:04
Let's put the numbers in order.
00:06
12, 15, 17, 18, 21, 22, 24, 25, 30, 32, 32, 32, 35, 30, 30, 30, 35, 40, 40, 41, 41, 41, 41, 42, 42, 42, 42, 42, 42, 25, 43, 45, 46, 47, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 15, 16, 17, 18, 19, 20.
00:47
So all 20 are there.
00:49
The median is between the 10th and the 11th values.
00:54
So 1, 2, 3, 4, 5, 6, 10.
00:58
That would be between 32 and 32, add them up.
01:01
So the median would be 32.
01:05
So you know the median being the 50th percentile.
01:09
You want the 70th percentile, which means 0 .7 times 20 is the 14th number...