Question

Which of the following is an example of positive correlation?

A. The amount of weight gained by pregnant women during the first trimester has been found to decrease as the number of episodes of nausea and vomiting increase.
B. The incidence of T2D increases as central adiposity increases
C. Consuming calories in excess of those needed results in an increased generalized adiposity.
D. Blood pressure in certain genetic groups appears to decrease as the consumption of dietary sodium is reduced.

Answer 1

Option B, which indicates that the incidence of type-2 diabetes increases with higher central adiposity, is an example of positive correlation, as it shows two variables increasing together.

Step-by-step explanation:

An example of positive correlation is where two variables increase in unison. From the options provided, Option B is an example of positive correlation. It states that the incidence of type-2 diabetes (T2D) increases as central adiposity increases. This means that as one variable goes up, so does the other, which is a hallmark of a positive correlation.

Another clear example of such a correlation would be the relationship between height and weight, where generally, as height increases, weight also tends to increase. It is important to note, however, that positive correlation does not necessarily imply causation; it merely indicates that there is a relationship between the two variables where one increases as the other does.