D. Find the mean, variance and the coefficrent
of
varsalson
from the
following data
Agelin yrs) 0-9
10-19
20-29
Frequency
30-39
g
40-09
6
8
12​

He is right i did this thing before

This is what i found “an explicit formula designates the nth term of the sequence, as an expression of n (where n = the term's location). it defines the sequence as a formula in terms of n. this example is an arithmetic sequence(the same number, 5, is added to each term to get to the next term).” i hope this you for what your looking for. can you plz mark me brainliest?