Chapter 11.0A, Problem 38E

To determine

$\left(a\right)$

To find:

the product $S\left[\begin{array}{c}-1\\ 1\end{array}\right]$ by changing the table into a $2\times 2$ matrix $S$.

To determine

$\left(b\right)$

To interpret:

The solution of the above part in the context of data.