The Mean Trap
by Anonymous · ⭐ 1 · 🍴 0
⚖️ The mean is the «evenly shared amount», while the median is the value «right in the middle» when you line things up. Move seven friends’ allowances around and make the mean 6 or 4. You can even keep the mean at 5 while changing only the median! Two sets can have the same mean but feel very different inside. 🎈 The second tab is especially fun: keep six allowances the same and raise just one to 100. The mean jumps from 5 to 18, but the median stays at 5 because the middle person hasn’t changed. 🎯 Last, choose: a class where only one student gets a huge allowance, evenly spread test scores, or home prices with just a few expensive ones—which data should we describe with the mean, and which with the median? This app was made with code too · Remix it and add your class’s data!
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About this app
The average trap is an interactive data-literacy app that teaches the difference between the mean and the median using seven friends’ weekly pocket money. Adjust individual values to reach target averages, make the average and median diverge, and observe how one unusually large value can move the mean while the median stays stable. A final set of scenarios helps learners choose whether the mean or median better represents pocket money, test scores, house prices, and heights.
Use cases
- Students learning mean and median
- Teachers introducing statistics and data literacy
- Families exploring outliers and representative values
- Learners practicing critical thinking with data
Features
- Interactive seven-person pocket-money dataset
- Controls for increasing or decreasing selected values
- Visual comparison of mean and median
- Missions for creating target averages and changing the median
- Outlier activity showing one value’s effect on the mean
- Scenario quiz for choosing mean or median