A research hypothesis proposes that consuming low-carbohydrate diets results in increased weight loss. One group of people follows a low-carb diet for three weeks, while a second group follows a high-carb diet containing the same number of calories for three weeks. The average number of pounds lost per person is compared. What is the independent variable?

Question

Quizplus · Accepted Answer

The independent variable in this study is the amount of carbohydrates in each diet. This is what is being manipulated in order to observe the effect on weight loss. The number of pounds lost, the number of calories in each diet, and the length of time on the diet are all dependent variables that will be measured and observed in the study.

A Research Hypothesis Proposes That Consuming Low-Carbohydrate Diets Results in Increased