Which of the following observations is an example of a positive correlation?
A)When older adults increase their daily intake of vitamin D,the percentage of the adults that develops infections decreases.
B)When teenagers decrease their usual intake of sugar-sweetened beverages,their body fat level declines.
C)When a population consumes fewer fruits and vegetables,the percentage of people in that population with scurvy increases.
D)When teenage girls decrease their intake of iron-rich foods,the percentage of the girls who have iron-deficiency increases.

Question

Quizplus · Accepted Answer

A positive correlation means that as one variable increases, the other variable also increases. In this case, as teenagers decrease their intake of sugar-sweetened beverages, their body fat level declines. This shows a positive correlation between the two variables.

Which of the Following Observations Is an Example of a Positive