Dot Plots and Histograms

Dot Plots and Histograms

What students learn

Students learn that dot plots show each value separately while histograms group values into bins. Begin with Dot Plots and Frequency Tables Organize Values so the table-to-plot connection is clear.

Why it matters

A dot plot can show the exact data points, while a histogram makes the shape of the data easier to see. Histograms Group Values Into Bins helps students move from a list of values to grouped bars.

Learn the idea

Histograms group values into intervals, which is useful when the data set is larger or the values are spread across a wide range. Histograms Show Shape and Spread shows what the display can reveal at a glance.

Try it

Ask the student to choose whether a data set about shoe sizes, test scores, or daily temperatures should be shown with a dot plot or a histogram. Then have them explain why their choice fits the data.

Parent guide

Encourage the student to talk about what each graph makes easy to see. If they say only "a graph," ask which details matter: exact values, shape, or frequency.