# Statistics & Probability Calculator

> Paste any dataset and get mean, median, mode, standard deviation, quartiles, correlations, binomial probabilities and live charts - instantly.

Free statistics and probability calculator: mean, median, mode, range, variance, standard deviation, quartiles, IQR, z-scores, weighted average, permutations, combinations, binomial probability, Pearson correlation and linear regression with histogram and scatter charts.

- **Canonical:** https://www.ailovekit.com/calculators/statistics-calculator/
- **Category:** Calculator
- **Processing:** Runs entirely in your browser. Files are never uploaded to AiLoveKit servers.

## How It Calculates

- **Formula:** Mean = Σx ÷ n; s = √(Σ(x − mean)² ÷ (n − 1)); r = Σ(dx·dy) ÷ √(Σdx²·Σdy²)

All calculation runs locally in your browser; results update as you type and include the substituted working.

## Descriptive Statistics in One Paste

AiLoveKit's **statistics calculator** takes a raw list of numbers - pasted straight from a spreadsheet - and returns the full descriptive picture: mean, median, mode, range, sample and population standard deviation, variance, quartiles, IQR, MAD and coefficient of variation, plus a histogram of the distribution.

## Probability and Relationships Built In

- **Probability** - permutations, combinations, factorials, binomial P(X = k), cumulative P(X ≤ k) and expected value.

- **Relationships** - Pearson correlation, sample covariance and least-squares linear regression with a scatter plot and fitted line.

- **Extras** - weighted averages and z-scores computed alongside your dataset.

Everything updates as you type, every result shows its working, and nothing leaves your browser. Need money math instead? Try the [Financial Calculator](https://www.ailovekit.com/calculators/financial-calculator/).

## Frequently Asked Questions

**How do I enter my data?**

Paste or type numbers separated by commas, spaces or new lines - any mix works. Weights, X and Y lists follow the same rules.

**Sample or population standard deviation?**

Both are shown. Sample (n − 1) is highlighted and is what you want for data drawn from a larger population; population (n) is in the details.

**What does Pearson r mean?**

r measures linear correlation from -1 (perfect negative) through 0 (none) to +1 (perfect positive). R² tells you the share of variance the fit explains.

**Is my data sent anywhere?**

No. Every calculation runs locally in your browser - nothing is uploaded or stored outside your own device history.

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Source: https://www.ailovekit.com/calculators/statistics-calculator/
Part of AiLoveKit: https://www.ailovekit.com/
Machine-readable index: https://www.ailovekit.com/llms.txt