A nutrition study measuring how many helpings of vegetables each of 125 grade school children were served each week during a school year and their body mass index (BMI) scores found r = -0.13. This tells that:
A) children who ate more vegetables tend to have lower BMI scores, but it is a weak association.
B) children who ate more vegetables tend to have lower BMI scores, and it is a strong association.
C) children who ate more vegetables tend to have higher BMI scores, but it is a weak association.
D) children who ate more vegetables tend to have higher BMI scores, and it is a strong association.

Question

Quizplus · Accepted Answer

The negative Pearson correlation coefficient (-0.13) indicates a weak (but still statistically significant) negative association between the number of servings of vegetables and BMI scores. This means that children who ate more vegetables tended to have lower BMI scores, but the association is not particularly strong.

A Nutrition Study Measuring How Many Helpings of Vegetables Each