Question

which of the following data sets matches a correlation coefficient of - 0.7?

Explanation:

Step1: Understand correlation coefficient

A correlation coefficient of - 0.75 indicates a moderately strong negative linear relationship.

Step2: Analyze scatter - plots

We need to find a scatter - plot where the points generally follow a downward - sloping trend.

Step3: Evaluate options

The scatter - plot with points showing a clear downward trend (not too scattered and not too perfectly linear) represents a moderately strong negative correlation.

Answer:

The scatter - plot with points that show a clear downward trend (but not perfectly linear) is the one that matches a correlation coefficient of - 0.75. Without specific labels for the plots, we can't identify it by a letter, but it should be the one with points sloping downwards moderately closely.