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Statistics worksheet for Grades 11–12 with data sets for calculating mean and identifying anomalies and outliers.
Worksheet

Calculating Mean and Identifying Anomalies

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This printable statistics worksheet gives high school students practice calculating mean from multiple data sets and identifying anomalies (outliers) that don't follow the pattern. Students identify outliers in sets like 4, 5, 6, 7, 30 and calculate the mean for eleven different data sets. Useful for reteaching, review, or practice before assessment.

Subject:
Math
Topic:
Statistics
Grade Level:
11th – 12th Grades
Updated May 2026

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