# 2.4 Box plots

**Problem 1**

The following are boxplots of the numbers of hits at a certain website for the different days of the week.

1. Which days had outliers?

- Sunday
- Monday
- Tuesday
- Wednesday
- Thursday
- Friday
- Saturday

2. Which day had the largest median?

3. Which day had the largest 3rd quartile?

4. Less than 25 percent of Thursdays had a higher number of hits than the busiest Saturday.

- True
- False

## Correct Answers

- DFG
- Wednesday
- Monday
- False

# Problem** 2**

Consider the following box and whisker plot. Find the indicated values of the represented data.

- Minimum:
- First quartile:
- Median:

## Correct Answers

- 24
- 37
- 46

# Problem 3

Consider the following box and whisker plot. Match the letters with the values.

- X
- Y
- Z

- Mean
*Q*_{1}- Max
- Right Pivot
*Q*_{3}

## Correct Answers

- B
- C
- E

# Problem** 4**

The boxplot below represents annual salaries of attorneys in thousands of dollars in Los Angeles.

About what percentage of the attorneys have salaries between $152,000 and $252,000?

- 10
- 30
- 35
- 50
- None of these

## Correct Answers

50

# Problem 5

A boxplot for a set of data is given below. Find the five-number summary.

Find the minimum:

Find *Q*_{1}:

Find the median:

Find *Q*_{3}:

Find the maximum:

## Correct Answers

Minimum: 4

*Q*_{1}: 10

Median: 25

*Q*_{3}: 29

Maximum: 40