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Statistics & Probability Tools

Statistics and probability calculators for data analysis and homework. Compute descriptive statistics, z-scores, confidence intervals, binomial probabilities, linear regression fits, and more.

Inside the Statistics & Probability toolkit

Discover fast, browser-based utilities curated for statistics & probability workflows. Launch any tool to start using it immediately—no downloads, no sign-up, and results you can copy or export for your projects.

Descriptive Statistics Calculator

Paste your data and instantly compute mean, median, mode, variance, standard deviation, quartiles, and box-plot summary values.

Z-Score & Normal Distribution Calculator

Convert raw scores to z-scores and read off normal distribution probabilities, including left-tail, right-tail, and two-tailed p-values from z.

Confidence Interval Calculator

Build confidence intervals for means, proportions, and differences between groups at 80%, 90%, 95%, or 99% confidence levels.

Binomial & Combinatorics Calculator

Compute combinations (nCr), permutations (nPr), and binomial probabilities P(X=k), P(X≤k), and P(X≥k) for discrete probability questions.

Linear Regression Calculator

Fit a linear regression line to (x, y) data, and see the slope, intercept, correlation coefficient, R², and predicted values from the best-fit line.

T-Test & P-Value Calculator

Compute one-sample and two-sample t-tests from summary statistics. Get t statistics, degrees of freedom, and one-sided and two-sided p-values.

Correlation Matrix Calculator

Paste multi-column numeric data and generate a Pearson correlation matrix with basic summary statistics for each variable.

Sample Size Calculator

Calculate the minimum sample size needed for estimating a mean or proportion with a given margin of error and confidence level.

Statistics & Probability tools FAQ

What can I do with statistics & probability tools?

Use this toolkit to handle common statistics & probability workflows such as descriptive statistics calculator, z-score & normal distribution calculator, confidence interval calculator. Each utility opens instantly in your browser—no installs or accounts required.

How many statistics & probability tools does ToolHop provide?

This category currently includes 8 dedicated statistics & probability utilities with descriptive guides and shareable deep links. We expand the collection whenever we release new helpers for this workflow.

Can I bookmark or share these statistics & probability tools?

Yes. Each tool page has a unique URL so you can bookmark frequently used calculators and send teammates directly to the interface they need.

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