Question

For which data set is a linear regression most reasonable? A. A set of nine data pairs with a correlation coefficient r = –0.4 B. A set of five data pairs with a correlation coefficient r = 0.3 C. A set of four data pairs with a correlation coefficient r = –0.8 D. A set of six data pairs with a correlation coefficient r = 0.6

Answer 1

C "a set of four data pairs with a correlation coefficient r = –0.8"

Explanation:

Answer 2

Set of four data pairs with correlation coefficient r= -0.8 reasonable linear regression data set.

Explanation:

Linear regression is a primary type of predictive analysis. It describes does a variable does a useful job. Which variable is significant.

Set of nine data pairs with correlation coefficient r = -0.4

Set of five data pairs with correlation coefficient r= 0.3

Set of four data pairs with correlation coefficient r= -0.8

Setoff six data pairs with correlation coefficient r = 0.6

A setoff four data pair with correlation coefficient r = -0.8 is the valid data set.

Because

r = -0.8

r2 = 0.64,

This is very close to 1 as compared to any other data pair.

Hence, Set of four data pairs with correlation coefficient r= -0.8 reasonable linear regression data set.