25. Lesson 4(DOT)5(COLON) Standardisation and z-scores

Applying Lesson 4.5: Standardisation And Z-scores — Quiz

Test your understanding of applying lesson 4.5: standardisation and z-scores with 5 practice questions.

Practice Questions

Question 1

What is the formula to calculate the z-score of a data point?

Question 2

If a dataset has a mean $(\mu)$ of 50 and a standard deviation $(\sigma)$ of 5, what is the z-score for a data point $X = 60$?

Question 3

A z-score indicates how many standard deviations a data point is from the mean. If a z-score is $-1$, what does this indicate about the data point?

Question 4

What does a z-score of $0$ signify?

Question 5

If the z-score of a data point is $1.5$, what can be inferred about the data point's position relative to the mean?