Descriptive statistics calculator
Report median, quantiles, spread and a histogram with conventions.
Jak používat Descriptive statistics calculator
The Descriptive statistics calculator takes a list of numbers and returns the count, mean, median, minimum, maximum, first and third quartiles, and both population and sample standard deviations. It also builds a histogram with 1 to 50 equal-width bins, shown as a chart and a table of bin ranges and counts. Quartiles use linear interpolation at position (n − 1)p.
- Paste the source into the input editor, or load the built-in example.
- Set histogram bins.
- Run descriptive statistics calculator, review the output, then use the available copy or download controls.
Funkce nástroje
Reports descriptive statistics and histogram counts. Quartiles use linear interpolation at (n−1)p; population and sample standard deviations are labelled separately.
- Histogram bins
- Range: 1 to 50
Omezení a zpracování
Local bounded calculations. Numeric inputs must be finite and within the visible ranges. Lists and tables have operation-specific limits. Models, estimates and supplied rates must be checked against your intended use.
Ukázkový vstup
2, 3, 3, 5, 7, 9, 12
Časté dotazy
How are quartiles calculated?
Values are sorted and each quartile is read at position (n − 1) × p, interpolating linearly between neighboring values. Q1 uses p = 0.25, the median 0.5 and Q3 0.75. Other software may use a different quartile method and give slightly different results.
What is the difference between population and sample standard deviation?
Population SD divides the sum of squared deviations by n, while sample SD divides by n − 1 to estimate the spread of a larger population from a sample. Both are shown, and sample SD requires at least two values.
How does the histogram choose bin ranges?
The range from minimum to maximum is split into the number of bins you choose, from 1 to 50, all of equal width. Each value is counted in its bin, and the maximum falls in the last bin. If every value is the same, a width of 1 is used.
Where is my input processed?
This operation processes its source in your browser. Copy and download are explicit actions; source input is not saved in an account or history.
What are the input limits?
Local bounded calculations. Numeric inputs must be finite and within the visible ranges. Lists and tables have operation-specific limits. Models, estimates and supplied rates must be checked against your intended use.