Worksheets · Pre-Algebra

Dot plot worksheet for Pre-Algebra

Each dot is one value, so the tallest stack is the mode and the whole picture is the data set written out. Counting the dots is the step students skip.

Also taught in Algebra 1 and Statistics, each at its own level and with its own examples.

The preview can look cramped on a phone. The PDF and printed sheet come out normal.

Free math worksheets at sigmaprep.io/worksheets© 2026 Sigma Prep

Sigma Prep · sigmaprep.io/worksheets

Name

Dot Plots

Date Period

Use the dot plot to answer each question.

  1. Find the mean from a dot plot

    Use the dot plot of the number of customers who came into a shop each hour to find the mean.34567
  2. The dot plot shows the number of pages each student read last night. Find the mean.23456
  3. Find the mean of the points a player scored in each game, shown in the dot plot.12345
  4. Use the dot plot of the number of books each student read over the summer to find the mean.34567

  1. Find the median from a dot plot

    Find the median of the number of runs a baseball team scored in each game, shown in the dot plot.789101112
  2. What is the median of the data? The dot plot shows the shoe sizes of the students in a class.67891011
  3. Look at the dot plot of the ages of the children at a party. What is the median?8910111213
  4. Each dot in the plot is one value from the hours each student practiced an instrument this week. What is the median?67891011

  1. Find the mode from a dot plot

    Each dot in the plot is one value from the number of push-ups each student did in one minute. What is the mode?9101112131415
  2. Look at the dot plot of the number of stickers each child collected. What is the mode?10111213141516
  3. The dot plot shows the ages of the members of a swim team. Find the mode.10111213141516

  1. Find the range from a dot plot

    A dot plot records the scores on a 20-point quiz. Determine the range of the data.2345678910
  2. Read the dot plot of the number of letters in each word of a poem and give the range.3456789
  3. Read the dot plot of the number of goals a team scored in each game and give the range.123456789

  1. Count values that meet a condition

    The dot plot shows goals scored in 10 games. What percent of the games had less than 12 goals?8910111213141516
  2. The dot plot shows goals scored in 16 games. How many games had less than 11 goals?8910111213141516
  3. The dot plot shows goals scored in 16 games. What percent of the games had 8 or more goals?456789101112

  1. Compare two dot plots

    The dot plots show the number of books each student read over the summer, for Group A and Group B. Which group has the greater median?B45678910111213A45678910111213
  2. Group A is the top dot plot and Group B the bottom one. They show the points each player scored in a game. Which group’s data have the larger range?A9101112131415161718B9101112131415161718
  3. Two groups are compared: the plots show the lengths of fish caught, in inches, with Group A on top. Compare the medians. Which group’s is greater?A567891011121314B567891011121314

Free math worksheets at sigmaprep.io/worksheets© 2026 Sigma Prep

Sigma Prep · sigmaprep.io/worksheets

Name

Dot PlotsAnswer keyVersion 1

Date Period

Use the dot plot to answer each question.

  1. Find the mean from a dot plot

    Use the dot plot of the number of customers who came into a shop each hour to find the mean.345675
  2. The dot plot shows the number of pages each student read last night. Find the mean.234564
  3. Find the mean of the points a player scored in each game, shown in the dot plot.123453
  4. Use the dot plot of the number of books each student read over the summer to find the mean.345675

  1. Find the median from a dot plot

    Find the median of the number of runs a baseball team scored in each game, shown in the dot plot.7891011129
  2. What is the median of the data? The dot plot shows the shoe sizes of the students in a class.678910118
  3. Look at the dot plot of the ages of the children at a party. What is the median?891011121313
  4. Each dot in the plot is one value from the hours each student practiced an instrument this week. What is the median?678910119.5

  1. Find the mode from a dot plot

    Each dot in the plot is one value from the number of push-ups each student did in one minute. What is the mode?910111213141510
  2. Look at the dot plot of the number of stickers each child collected. What is the mode?1011121314151614
  3. The dot plot shows the ages of the members of a swim team. Find the mode.1011121314151612

  1. Find the range from a dot plot

    A dot plot records the scores on a 20-point quiz. Determine the range of the data.23456789107
  2. Read the dot plot of the number of letters in each word of a poem and give the range.34567896
  3. Read the dot plot of the number of goals a team scored in each game and give the range.1234567897

  1. Count values that meet a condition

    The dot plot shows goals scored in 10 games. What percent of the games had less than 12 goals?891011121314151640%
  2. The dot plot shows goals scored in 16 games. How many games had less than 11 goals?89101112131415163
  3. The dot plot shows goals scored in 16 games. What percent of the games had 8 or more goals?45678910111250%

  1. Compare two dot plots

    The dot plots show the number of books each student read over the summer, for Group A and Group B. Which group has the greater median?B45678910111213A45678910111213Group B: median 9.5 vs 4.5
  2. Group A is the top dot plot and Group B the bottom one. They show the points each player scored in a game. Which group’s data have the larger range?A9101112131415161718B9101112131415161718Group A: range 6 vs 2
  3. Two groups are compared: the plots show the lengths of fish caught, in inches, with Group A on top. Compare the medians. Which group’s is greater?A567891011121314B567891011121314Group B: median 11.5 vs 8

Free math worksheets at sigmaprep.io/worksheets© 2026 Sigma Prep

How to do these

A dot plot has 3 dots over 5 and 1 over 8. Find the range

  1. The smallest value is 5 and the largest is 8.
  2. 8 minus 5.

The answer is 3.

Where students go wrong

Reading the height of a stack as the value. The height is how many times it happened; the value is the number underneath it.

Also called line plot, dot plot worksheet or reading a dot plot.

What you can put on this worksheet

The mean
Read the dot plot of the number of stickers each child collected and give the mean. — a dot plot from 2 to 6 → 4
The median
Read the dot plot of the number of pets each family on a street owns and give the median. — a dot plot from 3 to 7 → 4
The mode
Read the dot plot of the number of pets each family on a street owns and give the mode. — a dot plot from 3 to 7 → 4
The range
Read the dot plot of the number of stickers each child collected and give the range. — a dot plot from 3 to 10 → 7
The interquartile range
Use the dot plot of the number of books each member of a reading club finished. Find Q3−Q1. For quartiles, split the data at the median, and leave the median out of both halves when the count is odd. → 5
Make a dot plot from data
Make a dot plot of the data: 5, 6, 6, 6, 7, 9, 8, 7, 7, 6 — a dot plot from 3 to 9 → 5 (1), 6 (4), 7 (3), 8 (1), 9 (1)
How many or what percent meet a condition
The dot plot shows goals scored in 12 games. How many games had less than 9 goals? — a dot plot from 6 to 12 → 1
Compare two dot plots
Each dot is one value: the number of push-ups each student did in a minute, for Group A (top) and Group B (bottom). Which group’s data have the larger median? → Group B: median 13 vs 9

Questions about these worksheets

Yes. Every dot 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.

Pre-Algebra is usually taken around 7th or 8th 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 dot 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 three 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 8: the mean, the median, the mode, the range, the interquartile range, make a dot plot from data, how many or what percent meet a condition and compare two dot plots. Tick as many as you want and set how many of each, or let it spread them evenly.

Reading the height of a stack as the value. The height is how many times it happened; the value is the number underneath it.