Grade 12 · Statistics

Samples, surveys & experiments

176 problems in this skill, each with a solver-verified answer key. Answers are checked the moment you submit — with a hint if you want one and a worked solution afterwards.

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A few statements from this skill. Answers, hints and worked solutions live in the practice session.

Warm-up
A population has $P = 9$ members. A researcher will select a simple random sample of size $n = 6$ from this population. How many different simple random samples of size $n$ are possible?
Warm-up
A population has $P = 14$ members. A researcher will select a simple random sample of size $n = 3$ from this population. How many different simple random samples of size $n$ are possible?
Warm-up
A population has $P = 11$ members. A researcher will select a simple random sample of size $n = 6$ from this population. How many different simple random samples of size $n$ are possible?

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