00:01
Hey there, welcome to numerate.
00:03
With this following data set over here, we're asked to find a range, population variant, and population standard deviation.
00:10
So, let's start with the range.
00:14
So range, the formula, is basically the maximum value minus the minimum value, aka the highest value minus the lowest value.
00:23
So we just write it as max minus the min.
00:26
So what is our highest value in our data set here? since let's see here, so it looks like our highest value here would be 19.
00:39
And let's look for our lowest value.
00:42
Our lowest value looks like over here would be 5.
00:47
So we would do 19 minus 5, which simply will equal 14.
00:52
14 is our range here.
00:55
Now let's do our variance.
00:58
Our population variance is denoted as sigma squared equals.
01:05
So for sigma squared, our population variance, we're going to take the sum of squares.
01:13
This is the equation where x minus the mean...