Two students want to compare the daily temperature in two different schoolyards. To make a fair comparison, what should they do?

One student measures at noon, and the other measures after school.

One uses a digital thermometer, and the other uses a mercury thermometer.

Both use the same type of thermometer and measure at the same time of day in a similar location.

One places the thermometer on the sunny blacktop, and the other places it in a shady, grassy area.

Which of the following scenarios best demonstrates the principle of standardization?

Measuring rainfall in one city with a bucket and in another city with a high-tech rain gauge.

Two scientists testing water temperature at the same lake, but one tests at the surface and the other tests 10 feet deep.

Weather stations around the world all agreeing to measure air temperature 2 meters above the ground.

A student recording the time the sun rises using their phone, while their friend uses an analog watch.

are always what the scientist expected.

can be trusted because the methods were consistent.

were collected using the newest technology available.

prove that one place is better than another place.

Using the most expensive tools available for an experiment.

Making sure all measurements are taken in the exact same way.

Guessing the results before an experiment begins.

Only comparing data from the same day.

To make their experiments more complicated and challenging for others to repeat.

To ensure that any differences in the data are due to what is being studied, not different measurement methods.

To finish their experiments as quickly as possible.

To prove that their initial hypothesis is always correct.