Statistics Calculator
Calculate mean, median, mode, standard deviation, variance and more.
How to Use the Statistics Calculator
Enter your numbers in the text box, separated by commas or newlines. The calculator instantly computes:
- Count — total number of values
- Sum — the total of all values added together
- Mean — the arithmetic average
- Median — the middle value when sorted
- Mode — the most frequently occurring value(s)
- Range — the difference between the largest and smallest values
- Min / Max — the smallest and largest values
- Standard Deviation — how spread out the values are from the mean
- Variance — the average of squared deviations from the mean
All calculations run instantly in your browser. No data is sent to any server.
Frequently Asked Questions
What is the difference between mean, median and mode?
The mean is the arithmetic average (sum divided by count). The median is the middle value when numbers are sorted. The mode is the most frequently occurring value. They measure central tendency in different ways.
What is standard deviation?
Standard deviation measures how spread out the values are from the mean. A low standard deviation means values are close to the mean, while a high one means they are spread out over a wider range.
What is variance?
Variance is the average of the squared differences from the mean. It is the square of the standard deviation and measures how far each number in the data set is from the mean.
Does this use population or sample standard deviation?
This calculator uses population standard deviation (divides by N). If you need sample standard deviation (divides by N-1), divide the variance by (N-1)/N before taking the square root.
What happens if there is no mode?
If every value appears only once (no repeats), all values are shown as the mode since no single value is more frequent than the others.
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