Unit 9

One-Variable Statistics

Collect, display, and analyze single-variable data using measures of center, measures of spread, dot plots, histograms, and box plots. Interpret data distributions and identify outliers.

Unit 9 · 7 pages

Chapters

00Cover

Cover

Unit overview, essential questions, learning objectives, and vocabulary list for Unit 9 One-Variable Statistics.

9.1

Measures of Center

Calculate and interpret mean, median, and mode. Understand when each measure best represents a data set and how outliers affect each measure.

9.2

Measures of Spread

Calculate range, interquartile range (IQR), and mean absolute deviation (MAD). Use spread to describe variability in a data set.

9.3

Dot Plots & Histograms

Create and interpret dot plots and histograms. Describe the shape, center, and spread of a distribution.

9.4

Box Plots & Five-Number Summary

Construct and interpret box plots using the five-number summary: minimum, Q1, median, Q3, and maximum. Identify outliers using the IQR method.

9.5

Comparing Distributions

Compare two or more data sets using measures of center and spread. Interpret differences in context.

9.6

Unit Review

Review all Unit 9 One-Variable Statistics topics before the unit assessment.

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