Which Average?

Mean, median and outliers

An interactive lesson with 6 steps, about 5 minutes: you predict, drag and solve, with instant feedback on every answer. It runs in your browser and needs JavaScript.

What you’ll learn

• Mean = total ÷ count. Median = the middle value when sorted.
• Outliers drag the mean but barely move the median.
• For skewed data (incomes, house prices) the median is often the more honest summary.

Steps

1. Average salary
2. Drag the data
3. Find the median
4. The missing number
5. The mode
6. Raise the average