Question

The table below shows the values of y for different values of x:

Answer 1

Answer: there is almost no relationship between x and y.

Explanation:

The coefficient r tells how well the data fix into the model chosen.

A value  r = 1 indicates a perfect positive linear relation.

A value r = - 1 indicates a perfect negative linear relation.

Intermediates values may be interpreted more or less in this way:

1) 0.7 <  |r| < 0.7 => strong relation between the variables

2) |r| ≈ 0.5 moderate relation between the variables

3) |r| ≈ 0.3 poor relation between the variables

4) |r| ≈ 0 non-relation between the variables.