Question

Use a calculator to find the correlation coefficient of the data set.

Answer 1

Answer:

The correct option is C.

Step-by-step explanation:

The given data table is

  x          y

  2         15

  6         13

  7          9

  8         8

  12        5

Using calculator we get

Mean of x =7

Mean of y =10

$SS_x=52$

$SS_y=64$

$r=-0.9534\approx -0.953$

The correlation coefficient of the data set is -0.953.

Therefore the correct option is C.

Answer 2

The answer is -0.953