4. Statistics and Probability

Standardization And Z-scores — Quiz

Test your understanding of standardization and z-scores with 5 practice questions.

Practice Questions

Question 1

What does a z-score tell us about a data value in relation to a distribution?

Question 2

A data value has mean $50$ and standard deviation $10$. What is the z-score of the value $60$?

Question 3

Which formula is used to standardize a value $x$ from a distribution with mean $\mu$ and standard deviation $\sigma$?

Question 4

If a z-score is $-2$, what does this mean?

Question 5

A class test score has $\mu=72$ and $\sigma=8$. What raw score corresponds to $z=1.5$?