7.SP.B.3: Overlap of two data sets

Also written as 7.SP.3

Informally assess the degree of visual overlap of two numerical data distributions with similar variabilities, measuring the difference between the centers by expressing it as a multiple of a measure of variability.

In plain words: Students compare two data sets with similar spread by how much they overlap, and express the gap between their centers as a multiple of a measure of variability.

Quick picks

Common mistake: Judging only the gap between means: a 10 cm gap is large when each group's MAD is 5 cm and small when it is 20 cm.
Builds on: 6.SP.B.5Summarizing data in context
Leads to: 7.SP.B.4Comparing two populations

Khan Academy Resources

Comparing distributions Comparing distributions with dot plots (example problem)

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