Understanding Quartiles and Percentiles

Practice Questions

High School Math › Understanding Quartiles and Percentiles

Questions

3

1

$Q_{2}$ is the median of the overall data set. $Q_{1}$ is the median of the lower half of the data set. $Q_{3}$ is the median of the upper half of the data set.

Find the interquartile range $\left ( Q_{3}-Q_{1}\right)$ for the following data set:

2

The 70th and 80th percentiles of a set of scores are 78 and 86, respectively; the interquartile range of the scores is 41. Which of these scores is more likely than the others to be at the 25th percentile?

3

What is the probability of getting a sum of when rolling two six-sided fair dice?

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