Grade 8 · Statistics & Probability
Statistics
90 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.
What the problems look like
A few statements from this skill. Answers, hints and worked solutions live in the practice session.
Warm-up
What is the mean of the numbers 12, 15, 9, 18, and 21?
Warm-up
Calculate the range of the numbers 14, 27, 9, 22, and 15.
Warm-up
What is the mean of the numbers 5, 7, 9, 11, and 13?
Problems shown under their original terms: Generated (solver-verified).
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Unlimited math practice is on the free plan — no card, no trial clock.