Question

A student has the following grades: 80, 76, 78, 83, 83. Find the variance of the grades.

Answer 1

mean?

Answer 2

no the variance

Answer 3

V=[(x-xm)^2]/m

Answer 4

the answer?

Answer 5

here xm is the mean of these values

Answer 6

lol, idk how top use the form

Answer 7

first find the mean/average of 80,76,78,83,83 which is 80

second calculate the deviations from the mean of each data point: (80-80), (76-80), and so on

next square these deviations: 0, 16, and so on

sum these squares and divide by 5, the number of data points

you now have the variance