Question

in a study of streams in the adirondack mountains, the following relationship was found between the waters ph and its hardness (measured in grains). is it appropriate to summarize the strength of association with a correlation? choose the correct answer below. a. all the conditions for correlation are met. b. the scatterplot has outliers; correlation is not appropriate. c. the variables are not quantitative; correlation is not appropriate. d. the scatterplot is not linear; correlation is not appropriate.

Explanation:

Step1: Check linearity

The points in the scatter - plot do not form a linear pattern. Correlation measures the strength and direction of a linear relationship.

Step2: Recall correlation requirements

For correlation to be appropriate, the variables should be quantitative and the relationship should be linear. Here, the scatter - plot is not linear.

Answer:

D. The scatterplot is not linear; correlation is not appropriate.