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Sampling, Inference & the t-Test · Question 22 of 70

Question 22

EasyOriginal question

A survey finds the mean income of 200 families chosen from a city. What is this mean?

Options for question 22

Show the answer and explanation
CorrectNot quiteAnswer B

Correct answer: B

Explanation

  1. A statistic describes a sample; a parameter describes the whole population.

  2. This mean comes from 200 sampled families, so it is a statistic.

Worth noting

The mean income of every family in the city would be a parameter.

Concept
Parameter or statistic
Typical time
60 s
Your time
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The rule this testsParameters, statistics and the central limit theorem
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Ten questions from Sampling, Inference & the t-Test, at your own pace.

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