00:02
Okay, so let's look at x, x minus x bar, and parentheses x minus x bar, close parentheses squared.
00:16
And now we're looking at two, three, four, five, and six.
00:21
Now, first to calculate our range, we know this is going to be our biggest number, six minus our smallest number two, which is going to equal four, like our last problem.
00:34
Now then our range is going to be four and our average is going to be four as well not three yep 20 divided by five is four so that's true and we know that this is going to be two minus two sorry two minus four it's going to be three minus four four five minus four and six minus four which equals negative 2, negative 1, 0, 1, and 2.
01:18
This is similar to what we had on our last problem, where the squares are going to be 4, 1 ,0, 1, and 4 again.
01:28
And so, in effect, we also know that the sum of x minus x bar squared is going to equal 10...