Answer:
Step-by-step explanation:
To find the population variance, we first need the mean:
so the mean is 7.2. To find the population variance (which is almost exactly the same as the sample variance except for a small difference in the denominators of the formula) we have to take each number minus the mean, and then square the difference. Add together all these squared numbers and then divide by the number of numbers. Like this:
Add together those numbers and divide them by 5:

If its multiplcation
731700
if its addition
1895
im sorry if im wrong but im just trying to help out and please correct me if ime wrong
Hey there,
All we have to do is 472-21=451
So your number would be 451