It Is a Good Idea to Make a Scatter Diagram

question 56

Multiple Choice

It is a good idea to make a scatter diagram before figuring the correlation coefficient. This is because:

• A)there is no point in figuring the correlation if you can see a clear line formed
• B)there are different procedures depending on whether there appears to be a positive or a negative correlation
• C)it allows you to estimate the degree and direction of correlation to provide a check on your calculations
• D)you should only figure a correlation coefficient if you see a clear curvilinear correlation

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