Mark is in third grade and has just learned how to use a ruler to measure. He has become a measuring fool. He measures everything in the house, writing down all the measurements, and gaily announcing to his mom, "Hey, Mom. Guess what? The salt shaker is four and a quarter inches tall." What level of measurement is this?

Question

Quizplus · Accepted Answer

Ratio level of measurement is used here because it involves numerical measurements with a meaningful zero point, allowing for the comparison of absolute magnitudes. In this case, the height of the salt shaker is measured in inches, which is a ratio scale since it includes a zero point indicating no height, and allows for comparisons such as "twice as tall."

Mark Is in Third Grade and Has Just Learned How