← Back to Topic 5
Topic 5 · Statistics · Lessons 5.2 & 5.3

Center & Spread Visualizer

Type or paste a list of numbers. The tool computes the mean, median, mode, range, and sample standard deviation, and shows where each measure sits on a dot plot. Flip on the outlier toggle to add a single extreme value and watch the mean lurch while the median barely moves — the central insight of why we report incomes, home prices, and most skewed data as medians.

Mean · median · mode · range · sample SD
n = 12 values · range = 8
With 12 values, the mean is 5.83 and the median is 6. Toggle the outlier on to see how a single extreme value distorts the mean.

Mean

5.83

Median

6

Mode

7

Range

8

Sample SD

2.55

Data points Mean Median Outlier (toggle on)

Your data (comma or space separated)

Type up to 200 numeric values. Decimals and negatives are fine.

Outlier value 100

Try a dataset