4. Data & Probability

Descriptive Stats — Quiz

Test your understanding of descriptive stats with 5 practice questions.

Practice Questions

Question 1

A data set has values: $10, 12, 14, 16, 18. If each value in the data set is increased by $5$, how does the standard deviation change?

Question 2

Consider the data set: $2, 4, 6, 8, 10. If each value in the data set is multiplied by $2$, how does the variance change?

Question 3

Which measure of central tendency is most appropriate for a data set that contains ordinal data?

Question 4

A data set has a mean of $60$ and a standard deviation of $8$. If each value in the data set is divided by $2$, what will be the new standard deviation?

Question 5

Which of the following statements about the range is true?