LEARN · EXPLAIN · REVISE

A survey finds longer commute is associated with lower attendance. Does the survey prove that commute caused the attendance pattern?

Read the idea, work independently, then explain what changed.

TOPIC 01

Statistics: mixed assessment

A mixed assessment: identify the method, justify it and revise your reasoning.

Use one hint at a time. A correction explains what changed, not just the final answer.

01 / Foundation#Your turn

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Skills and prerequisite lessons

Working and explanation

BUILD THE REASONING

Hint 1

State the survey question, population, sampling and measurement rules before drawing a conclusion.

Hint 2

Distinguish the observation from a causal claim.

Worked solution

State the survey question, population, sampling and measurement rules before drawing a conclusion.
Calculate or simplify this relation.
$\text{association}\not\Rightarrow\text{causation}$
Use a conclusion proportional to the survey design.

No. School location, transport reliability or other factors may confound the relation.

Checks and common pitfalls: Use a conclusion proportional to the survey design.

Reasoning checklist · self / teacher assessment

Think first. Reveal a hint when the class is ready.

Teacher preparation and assessment