What is the value of SP for the following set of data? $$\begin{array} { l l }
\mathrm { X } & \mathrm { Y } \
\hline 1 & 4 \
2 & 4 \
9 & 1
\end{array}$$
A)5
B)-5
C)15
D)-15

Question

What is the value of SP for the following set of data? $$\begin{array} { l l } 
\mathrm { X } & \mathrm { Y } \
\hline 1 & 4 \
2 & 4 \
9 & 1
\end{array}$$
A)5
B)-5
C)15
D)-15

Quizplus · Accepted Answer

The sum of products (SP) is calculated as $\sum (X_i - \bar{X})(Y_i - \bar{Y})$. Here, $\bar{X} = 4$ and $\bar{Y} = 3$. Calculating each term: (1-4)(4-3) + (2-4)(4-3) + (9-4)(1-3) = -3 + -2 + -10 = -15.

What Is the Value of SP for the Following Set XY142491\begin{array} { l l } \mathrm { X } & \mathrm { Y } \\\hline 1 & 4 \\2 & 4 \\9 & 1\end{array}X129​Y441​​

What Is the Value of SP for the Following Set $\begin{array} { l l } \mathrm { X } & \mathrm { Y } \\\hline 1 & 4 \\2 & 4 \\9 & 1\end{array}$