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Statistics Calculator

Mean, median, mode, standard deviation and more

Numbers can be separated by spaces, commas, semicolons or newlines. Non-numeric values are ignored.
Count
0
Sum
0
Mean
0
Median
0
Mode
—
Range
0
Min
0
Max
0
Q1 (25%)
0
Q3 (75%)
0
IQR
0
Variance (s²)
0
Std Dev (s)
0
Sample Variance
0
Sample Std Dev
0

Formulas

  • Mean (μ): sum of all values ÷ count
  • Median: middle value when sorted; average of two middles if even count
  • Mode: most frequently occurring value(s)
  • Variance σ²: mean of squared deviations from mean — population formula uses N
  • Sample variance s²: uses N−1 (Bessel's correction) — use this for samples from a larger population
  • Quartiles: Q1 = 25th percentile, Q3 = 75th, IQR = Q3 − Q1 (used to detect outliers)