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10% Condition in AP Statistics

The 10% condition checks that a sample taken without replacement is no more than 10% of the population, supporting approximate independence between observations.

Verified for the 2027 AP Statistics examLast updated August 2026

What is the 10% Condition?

The 10% condition checks that a sample taken without replacement is no more than 10% of the population, supporting approximate independence between observations.

In AP Statistics, this term belongs to 3.5 Setting Up a Test for a Population Proportion and 4.4 Setting Up a Test for a Population Mean or Population Mean Difference. Use the notation and conditions attached to the procedure or model, then interpret the result in context.

Why the 10% Condition matters in AP® Statistics

10% condition supports Unit 3: Inference for Categorical Data: Proportions and Unit 4: Inference for Quantitative Data: Means. The relevant CED learning objectives cover justify the appropriateness of a hypothesis test for a population proportion by verifying conditions; identify the null and alternative hypotheses for a population proportion.

How the 10% Condition connects across the course

3.5 Setting Up a Test for a Population Proportion

10% condition is used in this topic. Connect the definition to the topic's calculations and interpretations in context.

4.4 Setting Up a Test for a Population Mean or Population Mean Difference

10% condition is used in this topic. Connect the definition to the topic's calculations and interpretations in context.

Is the 10% Condition on the AP® Statistics exam?

An AP question can ask you to select, check, calculate, and interpret an inference procedure for proportions or categorical data; or select, check, calculate, and interpret a t-procedure for means. Name the concept precisely, show the relevant calculation when needed, and state the conclusion in the problem's context.

Key things to remember about the 10% Condition

  • The 10% condition checks that a sample taken without replacement is no more than 10% of the population, supporting approximate independence between observations.

  • 10% condition is mapped to 3.5 Setting Up a Test for a Population Proportion and 4.4 Setting Up a Test for a Population Mean or Population Mean Difference in the current AP Statistics course.

  • On an AP question, use 10% condition as part of a complete calculation or interpretation, not as an isolated label.

Frequently asked questions about the 10% Condition

What is 10% condition in AP Statistics?

The 10% condition checks that a sample taken without replacement is no more than 10% of the population, supporting approximate independence between observations.

Which AP Stats unit covers 10% condition?

10% condition appears in Unit 3: Inference for Categorical Data: Proportions and Unit 4: Inference for Quantitative Data: Means, especially 3.5 Setting Up a Test for a Population Proportion and 4.4 Setting Up a Test for a Population Mean or Population Mean Difference.

How does 10% condition appear on the AP exam?

An AP question can ask you to select, check, calculate, and interpret an inference procedure for proportions or categorical data; or select, check, calculate, and interpret a t-procedure for means. Name the concept precisely, show the relevant calculation when needed, and state the conclusion in the problem's context.

Is 10% condition 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.