00:01
So we have a five number summary.
00:04
Minimum, q1, q2 which is also the median, q3, and the maximum.
00:15
And the numbers are 31, 55, 72, 94, and 179.
00:26
Great.
00:26
That's our five number summary that we're given.
00:29
And what we want to do is find the lower fence and the upper fence.
00:34
And those are going to tell us whether or not we have an outlier or outliers and the way we calculate these fences is as follows so the lower fence is q1 minus 1 .5 times the iqr and then q oops this would be q1 and then upper fence is q3 plus 1 .5 times the iqr so we know q3 and q1 those are already there was di -qr.
01:12
Di -qr is the difference of q and q times 1.
01:21
And so you take 94 less 55.
01:27
So that means lower fence is q1 which is 55 minus 1 .5 times 39 and that equals negative 3 .5...