Draw a random sample from a jar of numbered beads, watch it land on a dot plot, then drag the mean marker to where the data balances, set the ±MAD band, and compare two jars' samples.
A visible jar of numbered beads is the population; the player draws a random sample, the beads fly onto a dot plot, and the mean marker is dragged to sum ÷ n — the commit tips a balance beam toward the heavier side when the marker is off, so the mean is felt as the balance point. A spread mode labels each stack's distance from the mean and sets the ±MAD band, and compare mode draws from two jars and judges the gap in MAD units, targeting the belief that any difference in sample means is meaningful. Best for Grades 7–8.
A free, no-signup, no-ads math game for Grades 7–8 — practising random-sampling, mean, mean-absolute-deviation, dot-plot, comparing-populations. Play in your browser on the KidsDoMath games hub or explore more Data & Probability games.
By grade level: 7th Grade Math Games8th Grade Math Games
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What math does Sample Scout practice? Sample Scout practices Random Sampling, Averages, Mean Absolute Deviation, Dot Plot. A visible jar of numbered beads is the population; the player draws a random sample, the beads fly onto a dot plot, and the mean marker is dragged to sum ÷ n — the commit tips a balance beam toward the heavier side when the marker is off, so the mean is felt as the balance point.
What grade is Sample Scout for? Sample Scout is built for Grades 7–8 (ages 12–14). It sits in the Data & Probability strand, and it ramps across 8 levels so younger or older players find their own pace.
How do you play Sample Scout? Draw a random sample from a jar of numbered beads, watch it land on a dot plot, then drag the mean marker to where the data balances, set the ±MAD band, and compare two jars' samples.
Is Sample Scout free to play? Yes. Sample Scout is free, with no ads and no sign-up, and it runs in the browser on a phone, tablet or computer.