Practice Dot Plot in Statistics

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

Quick Recap

A dot plot is a statistical chart that displays the frequency of data values using dots stacked above a number line. Each dot represents one observation, making it easy to see clusters, gaps, and the overall shape of a distribution for small to medium datasets.

Like a line plot, but dots instead of X's. Each dot is one data point stacked above its value. The height of the stack shows frequency. Great for seeing clusters and gaps.

Example 1

easy
The number of books students read last month: 0, 1, 2, 1, 3, 2, 1, 0, 2, 1, 4, 2. Create a dot plot and identify the mode.

Example 2

medium
Two dot plots show test scores for Class A (scores clustered tightly around 75) and Class B (scores spread from 50 to 100). Both have the same median of 75. Compare the two distributions.

Example 3

medium
A dot plot shows ages of participants in a fun run: 20(3 dots), 25(5 dots), 30(8 dots), 35(6 dots), 40(4 dots), 45(2 dots), 50(1 dot). Describe the shape of the distribution and estimate the median age.

Example 4

hard
A dot plot shows the number of absences for 20 students: 0(6), 1(5), 2(4), 3(2), 4(1), 8(1), 10(1). Calculate the mean, identify any potential outliers, and explain how the outliers affect the mean compared to the median.
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