The four scatterplots below show the relationships between Consumer Reports rati

Question

The four scatterplots below show the relationships between Consumer Reports ratings and four different nutrients in 76 different breakfast cereals. The nutrients are: protein, sodium (salt), sugar, and carbs (carbohydrates). Use these scatterplots to answer Questions 1 through 4 below. One of the scatterplots above has a correlation coefficient of r = 0.09. A Which of the scatterplots is it? B Compute r^2 for this correlation coefficient. C Now, look at the data that r^2 represents. Interpret the value of r^2.

Explanation / Answer

1) from above bottom right graph seems to be correct choice as it shows zero correlation

B)r2 =0.092 =0.0081

C) r2 represent % of variation in ratings explained by variation in carbs

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