5. Data and Probability
Measures Of Spread — Quiz
Test your understanding of measures of spread with 5 practice questions.
Practice Questions
Question 1
The scores of $9$ students on a math quiz are: $75, 80, 82, 85, 88, 90, 92, 95, 100. What is the interquartile range (IQR) of these scores?
Question 2
A data set has a range of $40$. If each value in the data set is decreased by $10$, what will be the new range?
Question 3
Which of the following scenarios would most likely result in a small range but a large interquartile range (IQR)?
Question 4
Consider the following two data sets:
Data Set A: $$10, 12, 14, 16, 18$$
Data Set B: $$5, 10, 15, 20, 25$$
Which statement accurately compares their interquartile ranges (IQRs)?
Data Set A: $$10, 12, 14, 16, 18$$
Data Set B: $$5, 10, 15, 20, 25$$
Which statement accurately compares their interquartile ranges (IQRs)?
Question 5
If the interquartile range (IQR) of a data set is $0$, what does this imply about the values within the middle $50\%$ of the data?