Instantly compute mean, median, mode, range, variance, and standard deviation for any dataset. Paste in your numbers and choose sample or population — results in seconds.
Added May 15, 2026
Input
Example: 2, 4, 4, 4, 5, 5, 7, 9
Use 'Sample' when your data is a subset of a larger population (the common default). Use 'Population' when your data is the entire group.
Result
Enter a value for dataset to see your result.
Computes the full set of descriptive statistics — mean, median, mode, range, variance, and standard deviation — for any list of numbers you paste in.
Mean = Σx / n Variance (sample) = Σ(x − x̄)² / (n − 1) SD = √Variance
Eight values with a mean of 5. The value 4 appears three times (mode). Population standard deviation is exactly 2.
Inputs
Result
Five evenly spaced values. Mean and median are the same (30). Sample variance = 250, standard deviation ≈ 15.81.
Inputs
Result
Population SD divides by n (the full count) and is used when your data covers every member of the group. Sample SD divides by n−1 (Bessel's correction) and is used when your data is a subset — it provides an unbiased estimate of the true population SD. When in doubt, use sample SD.
If every value appears exactly once, there is no mode — the calculator will say 'No mode — all values unique'. If multiple values tie for the highest frequency, all of them are modes (a multimodal dataset).
Sort the values. If the count is odd, the median is the middle value. If even, the median is the average of the two middle values. For example, [1, 2, 3, 4] has a median of (2+3)/2 = 2.5.
Yes. The calculator handles any real numbers — positive, negative, zero, and decimals. Separate them with commas, spaces, or line breaks.
Standard deviation measures how spread out your data is around the mean. A small SD means values cluster tightly around the mean; a large SD means they are spread out. For normally distributed data, about 68% of values fall within ±1 SD of the mean.