What Is the Value of SP for the Following Set $\begin{array}{ll}\mathrm{X} & \mathrm{Y} \\\hline 4 & 3 \\1 & 2 \\1 & 5 \\2 & 6\end{array}$

Multiple Choice

What is the value of SP for the following set of data? $\begin{array}{ll}\mathrm{X} & \mathrm{Y} \\\hline 4 & 3 \\1 & 2 \\1 & 5 \\2 & 6\end{array}$

A) $-1$
B) $-5$
C) 5
D) None of the other 3 choices is correct.