Suppose you want to determine if there are differences in the average prices among items at three local supermarket chains.What type of study would work best?

A) An observational study
B) An experiment
C) None of the above

Observational Study

A study where the researcher observes and records behavior or outcomes without manipulating any variables.

Supermarket Chains

Refers to large retail entities that operate multiple stores under the same brand or ownership, specializing in selling a wide variety of groceries and household products.

Average Prices

The sum of the prices of all items in a set divided by the number of items, used to give a central value of the dataset.