Question

a data set was graphed using a scatterplot. the correlation coefficient, r, is 0.813. which of the following statements explains how the correlation is affected? a.) it is not affected. b.) it is affected by an influential point. c.) it is affected by inappropriate grouping. d.) it is affected by non-linearity.

Answer 1

It is affected by inappropriate grouping.

Explanation:

Since there are gaps in the data, really illustrating 3 separate groups rather than 1 overall group would be an inappropriate grouping. By exploring correlation overall it will underestimate how closely related the data is within each group.