Okay, so for variance, so variance is our average squared differences from the mean. So, to find the population variance are four variants, we have our population variance and sample variance. So, I will say our sample variance is more popular for population variance, we need to do something like this. So let's say I buy a copy this data. So, to find a popular variance, I need to find a line. So I will do something that is okay.

Then I will use this formula valence A times n minus one divided by n. So I will do something like this. So you should be there's a times R and minus one divided by By okay. So let me try that formula and minus one divided by n okay. So I get five Pi 136 or nine pi. So this one is for the population on the rise