25. Lesson 4(DOT)5(COLON) Standardisation and z-scores
Lesson Focus — Quiz
Test your understanding of lesson focus with 5 practice questions.
Practice Questions
Question 1
What is the formula to calculate a z-score for a value in a distribution?
Question 2
If the mean of a dataset is 50 and the standard deviation is 5, what is the z-score for a value of 55?
Question 3
When calculating a z-score, what does a z-score of $0$ indicate?
Question 4
What does a negative z-score signify in a statistical context?
Question 5
If the mean of a distribution is $100$ and the standard deviation is $15$, what is the z-score of $85$?