Fidan is studying a model of obesity. For her experiment, Fidan uses three groups of 31 rats each that are given either (1) 24-hour access to high calorie treat food in addition to their normal chow, (2) restricted 8-hour access to high calorie treat food and 24-hour access to their normal chow, or (3) 24-hour access to only their normal chow. Every day, Fidan weighs the animals and carefully takes note of the amount and type of food each animal has consumed. At the end of the experiment, Fidan performs surgery on all the animals and notices that the animals that put on the most weight showed noticeable differences in their hypothalamus compared to the rest of the rats.
-Which of the following represents the median weight of all the rats in Fidan's experiment

Question

Quizplus · Accepted Answer

The median weight in a dataset is the value separating the higher half from the lower half. With 93 rats (3 groups of 31), the median would be the weight of the 47th rat when ordered from lightest to heaviest, as this position is the central point in the dataset.

Fidan Is Studying a Model of Obesity