Question

Suppose that Weight 1 is the weight (in pounds) of a sample of five individuals before beginning a weight-loss diet, and Weight 2 is the weight in (pounds) of the same five individuals after the diet. If we would like to test the effectiveness of the diet, which of the following is the appropriate inference method?

1. matched pairs
2. two independent samples
3. inference for regression

Answer 1

1. matched pairs

Explanation:

A matched pair design is an unique case of a block design being randomised.

Which can be used whenever the study only has two requirements of treatment; and participants may be divided into pairs based on some element of blockage.

The wight in this scenario is the two requirements which participants are grouped in.

After which, subjects are allocated to different treatments at random within each pair.