$\begin{array} { c | c c c c c c c c c c }
\mathrm { x } & 2 & 4 & 11 & 8 & 6 & 5 & 7 & 9 & 10 & 3 \
\hline \mathrm { y } & 0 & 2 & 19 & 11 & 8 & 4 & 9 & 13 & 16 & 2
\end{array}$
A) r=0.990 ; linear relation exists
B) r=0.881 ; no linear relation exists
C) r=0.819 ; linear relation exists
D) r=0.792 ; no linear relation exists

Question

$\begin{array} { c | c c c c c c c c c c } 
\mathrm { x } & 2 & 4 & 11 & 8 & 6 & 5 & 7 & 9 & 10 & 3 \
\hline \mathrm { y } & 0 & 2 & 19 & 11 & 8 & 4 & 9 & 13 & 16 & 2
\end{array}$
A) r=0.990 ; linear relation exists
B) r=0.881 ; no linear relation exists
C) r=0.819 ; linear relation exists
D) r=0.792 ;  no linear relation exists

Quizplus · Accepted Answer

CThe correlation coefficient (r) measures the strength and direction of a linear relationship between two variables. A value of r close to 1 or -1 indicates a strong linear relationship. Choices A (r=0.990) and C (r=0.819) both suggest a linear relationship exists between x and y, with A indicating a very strong linear relationship.

A) R=0990 ; Linear Relation Exists B) R=0

A) R=0990 ; Linear Relation Exists
B) R=0