Question

Stats help required

Answer 1

@wio

Answer 2

how would you express what they're saying algebraicly?

Answer 3

this is what im asking

Answer 4

Hmmm.

Answer 5

Maybe it's like: \[
\sum x_i-4 = 72 \\
\sum x_i-7=-3
\]

Answer 6

@hba

Answer 7

If so, and we let \(n\) be the number of data points and \(\mu\) be the mean:\[

\begin{array}{rcl}
\mu n-4n &=& 72 \\
\mu n-7n &=& -3
\end{array}
\]Then you would have to solve this system...