An online retailer wants to study whether more lenient return policies increase purchasing behaviors. They select a random sample of 2000 customers who have made purchases in the past year.
The company ranks the customers according to total cost of purchases made the previous year. For every 2 customers, in order, from the list, the online retailer randomly assigns one customer to the treatment group and the other to the control group.
What type of experiment design is this?
matched pairs

Each member of a sample is matched with a matching member in every other sample by reference to characteristics other than those that are now the subject of the research. This results in a pair or set of matched samples.

What is a matched pairs design example?

After gathering 100 participants, they divide them into 50 pairs according to their gender and age. Since they "match" in terms of age and gender, a 25-year-old guy will be paired with another 25-year-old male.

Why choose the matched pairs method?

The purpose of the matched pair design is to lessen the possibility of an unintentional bias that could happen with a population that is randomly selected.

To Know more about matched pairs

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