$\begin{array} { r | r r r r r r r r }
\mathrm { x } & 9 & 2 & 3 & 4 & 2 & 5 & 9 & 10 \
\hline \mathrm { y } & 85 & 52 & 55 & 68 & 67 & 86 & 83 & 73
\end{array}$
A) r=0.708 ; linear relation exists
B) r=0.235 ; no linear relation exists
C) r=-0.708 ; linear relation exists
D) r=0.708 ; no linear relation exists

Question

$\begin{array} { r | r r r r r r r r } 
\mathrm { x } & 9 & 2 & 3 & 4 & 2 & 5 & 9 & 10 \
\hline \mathrm { y } & 85 & 52 & 55 & 68 & 67 & 86 & 83 & 73
\end{array}$
A)  r=0.708 ; linear relation exists
B)  r=0.235 ; no linear relation exists
C)  r=-0.708 ; linear relation exists
D)  r=0.708 ; no linear relation exists

Quizplus · Accepted Answer

The correlation coefficient (r) measures the strength and direction of a linear relationship between two variables. A value of r=0.708 indicates a strong positive linear relationship, meaning as one variable increases, the other variable tends to also increase.

A) R=0708 ; Linear Relation Exists B) R=0

A) R=0708 ; Linear Relation Exists
B) R=0