Practice Line Plots in Math

Use these practice problems to test your method after reviewing the concept explanation and worked examples.

Worksheet PDF Free Answer-key PDF Family

Quick Recap

A line plot (dot plot) displays data by placing marks (dots or Xs) above a number line to show the frequency of each value.

Like stacking coins above each number — taller stacks mean that value appeared more often in the data.

Showing a random 20 of 50 problems.

Example 1

medium
A line plot of 88 values has range 66 and minimum 44. What is the maximum?

Example 2

easy
A line plot shows scores 90,92,95,95,9890, 92, 95, 95, 98. What is the mode?

Example 3

medium
Plot of plant heights (cm): 10→210\to 2, 11→311\to 3, 12→412\to 4, 13→113\to 1. What is the range?

Example 4

easy
A line plot shows 6 Xs above 22. How many data points equal 22?

Example 5

easy
A line plot's values go from 11 to 88. What is the range?

Example 6

medium
Data on a plot: 3,3,4,5,5,5. Find the median.

Example 7

easy
True or false: a line plot connects its dots with line segments.

Example 8

medium
A line plot shows daily rainfall (mm): 0→3, 1→2, 2→1. On how many days did it rain?

Example 9

easy
Dots: 2 above 5, 3 above 6, 1 above 7. How many data points total?

Example 10

challenge
A line plot has values 1,2,31, 2, 3 with frequencies 1→21 \to 2, 2→a2 \to a, 3→23 \to 2, for a total of 99 data points. What is the mean?

Example 11

easy
A line plot shows ages: 77 appears 44 times. What is the frequency of age 77?

Example 12

easy
If each dot is one student's pet count, what does a dot above 2 mean?

Example 13

medium
A line plot shows lengths in 14\tfrac{1}{4}-inch units: 14→2\tfrac{1}{4}\to 2, 24→3\tfrac{2}{4}\to 3, 34→1\tfrac{3}{4}\to 1. Find the total length.

Example 14

easy
On a line plot, what does a taller stack of dots mean?

Example 15

easy
A plot has dots at 11 (once), 22 (twice), 33 (three times). How many dots total?

Example 16

challenge
A plot of 10 values has mean 6. If every value increases by 2, what is the new mean?

Example 17

medium
A line plot shows shoe sizes. Is shoe size categorical or numerical data?

Example 18

challenge
Two line plots have the same range and median but look different. What feature must differ?

Example 19

medium
Dots: 5→1, 6→3, 7→2, 8→2. What is the total number of data points?

Example 20

medium
Plot A is tightly clustered; Plot B is spread out, same center. Which has more variability?
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