00:01
So we have 60, 62, 66, 72, and 84.
00:06
And what we want to do is we're going to put another point in there, 55, which i'm going to put in red.
00:12
So we want to know what this does to the data set.
00:15
Well, first of all, the interforital range increases, the standard deviation increases, the range decreases, or the mean increases.
00:26
So let's look at the range and do those first.
00:29
The original range would be 84 minus 60, which is 24.
00:34
The new would be 84 minus 55, which is going to be greater than 24, so the range does not decrease.
00:41
The mean increases, well, that's going to be false because this is going to decrease the mean.
00:47
So the mean is going to decrease because we're putting in a smaller number.
00:52
Now let's look and see what the interquartile range does...