Question

1. The correlation coefficient, r, is given for the line of best fit modeling outcomes of several different experiments. Classify the given correlation coefficients as having a strong linear relationship, a weak linear relationship, or no relationship.the last one says no relationship

Answer 1

The correlation coefficient is used to find how strong a relationship is between data. We have, as a general rule the following:

1) r=1 indicates a strong positive relationship

2) r= -1 indicates a strong negative relationship

3)r=0 indicates no relationship at all.

In this case we have:

Experiment 1: r=0, therefore, there is no relationship

Experiment 2: r=0.28, here we have a weak linear relationship (since it's closer to 0)

Experiment 3: r=0.82, there is a strong positive relationship

Experiment 4: r=0.73, here we have a somewhat strong positive relationship