Frequently Asked Questions
What is the difference between mean, median, and mode?
Mean is the arithmetic average (sum ÷ count). Median is the middle value when sorted. Mode is the most frequent value. A dataset can have multiple modes or none.
When should I use median instead of mean?
Use median for skewed data or when outliers distort the mean - like income, home prices, or response times. The median is robust against extreme values.
What does range tell me?
Range = maximum − minimum. It measures spread, but only uses two values, so it is sensitive to outliers. Standard deviation is a better spread measure.
Can the mean equal the median?
Yes, in a perfectly symmetric distribution like the normal curve. When mean ≠ median, the data is skewed: mean > median means right-skewed.
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This calculator provides estimates for informational purposes only. Results are based on assumptions and may not reflect actual outcomes. Consult qualified professionals in relevant fields before making important decisions based on these results.