00:01
First we can use the values for city 1, 10, 50, for city 2, 15, 45, for city 3, 20, 40, for city 4, 25, 35, and for city 5, 30, 30.
00:21
We can start by calculating the means by adding them all up and then dividing by 5.
00:26
We will get that our mean is 40.
00:28
Then we can calculate the sums.
00:32
The sum of x is going to be 100, and the sum of our y is going to be 200.
00:42
The sum of xy is going to be equal to 3 ,750...