A box plot shows five numbers: the minimum, the first quartile, the median, the third quartile and the maximum. The box holds the middle half of the data, so its width is the interquartile range.
A box plot has Q1=12 and Q3=20. Find the interquartile range
The interquartile range is the width of the box.
20 minus 12.
The answer is 8.
Where students go wrong
Reading the line inside the box as the mean. It is the median, and on a skewed set the two are not the same.
Also called box plot, five number summary or interquartile range.
What you can put on this worksheet
Reading a box plot
Find the minimum→ 7
The five-number summary from a list
Find the median: 7,9,10,10,12,14,15→ 10
Questions about these worksheets
Yes. Every box and whisker plot sheet is free to print and free to download as a PDF. There is no account to make, no email to hand over and no limit on how many you take.
Yes. The answer key prints on a second page, and you can choose whether it shows each question beside its answer or just the answers in a list.
Yes. Print straight from the page, or download the PDF and print that. The sheet is laid out for paper rather than squeezed off a screen, so there is room to work under each question, and the answer key comes out on its own page.
Statistics is usually taken around 11th or 12th grade, though schools vary and plenty of students meet it earlier or later. Pick the difficulty rather than the grade: the easy level suits a first lesson on it, the hard level suits review before a test.
Yes, as many as you like. The questions are built fresh each time rather than picked from a fixed set of files, so pressing Generate gives a new sheet. That is what you want for a second class, a retake, or two students sitting next to each other.
That is the closest comparison, and Kuta Software is good software. It is also paid software you install on a computer. These worksheets run in a browser tab for free, with no account and nothing to install. Like Kuta, the box and whisker plot questions are generated when you ask for them rather than pulled from a fixed set of files, so two classes never get the same sheet, and the answer key comes with it.
Yes. There are two levels, and you can tick more than one for a sheet that mixes them, in which case the questions come out easiest first. The harder levels are not just larger numbers: they ask for something the easy ones do not.
You pick from 2: reading a box plot and the five-number summary from a list. Tick as many as you want and set how many of each, or let it spread them evenly.
Reading the line inside the box as the mean. It is the median, and on a skewed set the two are not the same.