Statistics Calculator
Mean, median, and mode are the three main measures of central tendency. They describe the "centre" of a dataset in different ways — mean uses all values, median uses position, and mode uses frequency.
- 1Mean: add all values, divide by count
- 2Median: sort the data, find the middle value (or average the two middle values for even count)
- 3Mode: find the most frequently occurring value
Dataset: 2, 3, 3, 5, 7, 10=Mean=5, Median=4, Mode=3Median=(3+5)/2=4
Incomes: $30k,$35k,$40k,$200k=Mean=$76.25k, Median=$37.5kOutlier skews mean
| Measure | Best for | Sensitive to outliers? |
|---|---|---|
| Mean | Symmetric data, no extreme outliers | Yes — highly |
| Median | Skewed data, income, house prices | No — robust |
| Mode | Categorical data, most common value | No |
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