We start with the equation \(\Sigma (x - 50) = 144\).

This can be expanded to \(\Sigma x - 50n = 144\).

We are also given \(\Sigma x = 944\).

Substitute \(\Sigma x = 944\) into the expanded equation:

\(944 - 50n = 144\).

Rearrange to solve for \(n\):

\(944 - 144 = 50n\)

\(800 = 50n\)

\(n = \frac{800}{50}\)

\(n = 16\)