00:01
For this problem to begin, what we'll want to do is we'll actually want to find the mean and median of the values first.
00:07
So of course we find the mean by adding up all the values.
00:11
So 380 plus 423 plus 453 plus 462 plus 496 plus 572 plus 575 plus 582 plus 636 plus 641 divided by 10.
00:22
So we have that the mean is equal to 522.
00:28
The median is going to be the average of the 5th and 6th values.
00:38
So we have 1, 2, 3, 4, 5, 6.
00:40
So the 5th value is 496 and the 6th value is 572.
00:44
So 496 plus 572 divided by 2 gives us a median of 534.
00:56
Then we change 641 to 461.
01:01
So that means that we remove what was the largest value.
01:09
We can see now that the mean, well first of all we'd have to recalculate the mean value, we can see that the mean has decreased to 504.
01:23
So that means that has decreased by 18, i believe...