Random Sampling for Research

Generate random samples, assign random IDs, or select a random subset from a numbered dataset.

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Minimum

Maximum

🔒 Every number uses your browser’s cryptographically-secure randomness (crypto.getRandomValues) — genuinely fair, not the predictable Math.random(). Nothing is sent anywhere.

Research tips

📊

For random sampling from N records, generate a list of K unique numbers in the range 1–N. Those row numbers become your sample.

💡

Unique mode ensures no record is sampled twice — equivalent to sampling without replacement, which is standard in most research designs.

🔐

Cryptographically secure randomness produces proper uniform distributions, suitable for scientific and statistical sampling.

📋

Export the list with "Copy all" to paste your random sample indices into Excel, R, Python, or your analysis tool.

Cara ia berfungsi

Masukkan

Enter your data into the tool above. Everything stays local to your browser.

Proses

The tool processes your data instantly in your browser using JavaScript. No server, no waiting.

Muat turun

Get your result instantly. Nothing is stored after you leave the page — complete privacy.

Mengapa alat kami?

✓Percuma sepenuhnya — tiada kos tersembunyi, selama-lamanya

✓Tiada akaun, e-mel atau log masuk diperlukan

✓Fail tidak pernah meninggalkan peranti anda

✓Tiada had saiz fail langsung

✓Tiada tera air pada sebarang output

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Soalan lazim

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