Question

A student measures the boiling point of water in the lab over three trials and gets the following

Answer 1

I think both are accurate

Answer 2

Answer: The correct answer is precise.

Explanation:

Accuracy is defined as the closeness of a measured value to a standard or known value.

For Example: If the mass of a substance is 80 kg and one person weighed 88 kg and another person weighed 78 kg. Then, the weight measured by second person is more accurate.

Precision is defined as the closeness of two or more measurements to each other.

For Example: If you weigh a given substance five times and you get 5.8 kg each time. Then the measurement is said to be precise.

We are given:

Measurements of boiling point of water done by the student in three trials = 85.2°C, 85.3°C and 85.2°C

Actual value of boiling point of water = 100°C

The measurements done by the student are close to one another but are no where close to the actual value. So, the results are precise.

Hence, the correct answer is precise.