Knowing Basic Boxplots

What do you do if there are two numbers in "the middle" when you are finding the median?

• Pick your favorite number
• Add the two numbers in the middle & then divide by two.
• They are both the median
• None of the above

2. Which of the following best describes the process of finding the interquartile range for a set of data?

• Add the biggest and smallest numbers.
• Place the numbers in order from least to greatest and find the middle.
• Find the difference between the maximum and the minimum.
• Subtract Q1 from Q3.

4. Which of the following lists all the five numbers needed to make a box plot?

• Mean, Median, Mode, Range, and Total

• Minimum, Quartile 1, Median, Quartile 3, and Maximum

• Smallest, Q1, Q2, Q3, and Q4

• Minimum, Maximum, Range, Mean, and Median

In order to find the median, the very first thing you must do is to..

• find the difference between biggest and the smallest number.

• find the middle number

• list the numbers in order

• find the most repeated number

What is the inner quartile range of the weekly car sales?

• 10

• 6

• 4

• 3

What is the median weekly car sales?

• 10

• 12

• 14

• 16

What is the median of the data?

• 200
• 100
• 90
• 140

What is Q3?

• 200
• 100
• 90
• 140

What is range?

Range = max - min

• 60

• 100

• 120

What data value is the upper quartile (Q3)?

• 64
• 62
• 66
• 58