4. Statistics and Probability
Standardisation Of Normal Variables And Z-values — Quiz
Test your understanding of standardisation of normal variables and z-values with 5 practice questions.
Practice Questions
Question 1
What is the main purpose of standardising a normal variable using a z-value?
Question 2
A normal distribution has mean $50$ and standard deviation $10$. What is the z-value of $70$?
Question 3
If a value has z-value $-1.5$, what does this mean?
Question 4
Which formula is used to standardise a value from a normal distribution?
Question 5
A value is exactly equal to the mean of a normal distribution. What is its z-value?