Masters trail · ages 16+
Mean and median are two ways to describe a typical value. Knowing when each is useful is a key statistics skill.
Number Quest's statistics questions practise both with short data sets and explanations.
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Tap a question to see the answer and how it works.
Answer: 21. 23 − 2 = 21.
Answer: 10. 10 appears twice; everything else once.
Answer: 13. 13 appears twice; everything else once.
Free, with no ads and no in-app purchases. Five trails from age 5 to 16+, five ways to play, a daily goal that builds a streak, buddies to unlock and a friendly weekly leaderboard. Questions are made fresh on the device, so there is always something new.
An Android app on Google Play is coming soon. Until then, play free right here in your browser.