Question

What is the correlatio. coefficient with (2.1)(3.2)(6.8)(7.3)(11.2)(12.6)(13.4)(15.9)

Answer 1

we know that

The correlation coefficient is a number between
`-1` and
`+1` that represent the linear dependence of two variables or sets of data

Using a Excel tool (CORREL function)

see the attached table

The answer is

The correlation coefficient is
`r=0.56`