Accuracy and precision

High school (ages 12+)
Mathematics & Numbers

Name:

Date:

Step 1 · Read the article

Open the article and read it at the level above. Then answer the questions below in your own words.

https://smallwhale.org/articles/accuracy-and-precision

Write what each word means, using the article.

Do not copy the article. Write two things you learned, the way you would explain them to a friend.

Answers below are taken from the article’s stored facts, so they match what the student read.

1. What is the difference between accuracy and precision?Accuracy is how close a measurement is to the true value. Precision is how close repeated measurements are to each other.
2. Why do scientists want both accuracy and precision?Having both means the data is correct and reliable. It helps scientists make good decisions and keep things safe.

Metrology: The scientific study of measurement, including its theory, practice, and application.
Standard Deviation: A statistical measure of the amount of variation or dispersion of a set of values from their mean.
Traceability: The ability to link a measurement result back to a recognized standard through an unbroken chain of comparisons.