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Skewness in AP Statistics

Skewness measures the asymmetry of a probability distribution, indicating whether data points are concentrated on one side of the mean.

Verified for the 2027 AP Statistics examLast updated August 2026

What is Skewness?

Skewness measures the asymmetry of a probability distribution, indicating whether data points are concentrated on one side of the mean.

In AP Statistics, this term belongs to 1.6 Descriptions for One Quantitative Variable Distributions. Use the notation and conditions attached to the procedure or model, then interpret the result in context.

Why Skewness matters in AP® Statistics

skewness supports Unit 1: Exploring One-Variable Data and Collecting Data. The relevant CED learning objectives cover describe distributions of quantitative one-variable graphical representations; justify a claim using distributions of quantitative one-variable graphical representations.

How Skewness connects across the course

1.6 Descriptions for One Quantitative Variable Distributions

skewness is used in this topic. Connect the definition to the topic's calculations and interpretations in context.

1.5×IQR rule (Unit 1)

1.5×IQR rule connects to skewness through the course's focus on variation, calculation, and conclusions in context.

Box plot (Unit 1)

Box plot connects to skewness through the course's focus on variation, calculation, and conclusions in context.

Is Skewness on the AP® Statistics exam?

An AP question can ask you to identify the study design or describe data with the correct graph and summary. Name the concept precisely, show the relevant calculation when needed, and state the conclusion in the problem's context.

Key things to remember about Skewness

  • Skewness measures the asymmetry of a probability distribution, indicating whether data points are concentrated on one side of the mean.

  • skewness is mapped to 1.6 Descriptions for One Quantitative Variable Distributions in the current AP Statistics course.

  • On an AP question, use skewness as part of a complete calculation or interpretation, not as an isolated label.

Frequently asked questions about Skewness

What is skewness in AP Statistics?

Skewness measures the asymmetry of a probability distribution, indicating whether data points are concentrated on one side of the mean.

Which AP Stats unit covers skewness?

skewness appears in Unit 1: Exploring One-Variable Data and Collecting Data, especially 1.6 Descriptions for One Quantitative Variable Distributions.

How does skewness appear on the AP exam?

An AP question can ask you to identify the study design or describe data with the correct graph and summary. Name the concept precisely, show the relevant calculation when needed, and state the conclusion in the problem's context.

Is skewness only a vocabulary term?

No. Be ready to use it in a calculation, identify it in a setup, or interpret what it means in context.