Best Free Online Developer Tools to Use in 2026
A practical, opinionated list of the best free online developer tools worth using in 2026, organized by category so you can find what you need fast.
Aug 08, 2026
Statistics Calculator
Calculate mean, median, mode, range, variance, standard deviation, and quartiles.
- Home
- Utilities
- Statistics Calculator
Descriptive Statistics
Count
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Sum
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Mean (Average)
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Median
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Mode
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Range
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Min
--
Max
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Q1 (25th percentile)
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Q3 (75th percentile)
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Variance (sample)
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Std Dev (sample)
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Sorted Data
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How to Use
- Enter data — Type or paste numbers separated by commas, spaces, or newlines.
- Calculate — Click Calculate to compute all descriptive statistics instantly.
- Interpret — View count, sum, mean, median, mode, range, min, max, quartiles, variance, and standard deviation.
Frequently Asked Questions
What is the difference between sample and population variance?
Sample variance uses n-1 in the denominator (Bessel's correction) to better estimate the population variance from a sample. This calculator uses sample variance by default.
How is the median calculated?
For an odd number of values, the median is the middle value. For an even number, it is the average of the two middle values after sorting.
What are quartiles?
Quartiles divide the sorted data into four equal parts. Q1 is the 25th percentile (median of lower half), Q3 is the 75th percentile (median of upper half).
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