# Math Help - Best point estimate for a sample of numbers

1. ## Best point estimate for a sample of numbers

I have a sample of 20 random numbers, represented by $Y_i$, ranging from 1 to 100,

Why is $\bar{Y}=\sum{Y_i \over n}$ considered the best point estimate of $Y_i$?

2. Originally Posted by chopet
I have a sample of 20 random numbers ranging from 1 to 100, $Y_i$

Why is $\bar{Y}=\sum{Y_i \over n}$ considered the best point estimate of $Y_i$?
What does $Y_i$ represent?