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Kalkulator sisihan piawai

Kira sisihan piawai

Berjalan dalam pelayar anda · Tiada muat naik

Alat ini dan arahan di halaman ini dalam bahasa Inggeris buat masa ini. Ia berfungsi dengan cara yang sama: semuanya berjalan dalam pelayar anda.

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  • Tiada apa-apa meninggalkan peranti anda
  • Tiada had saiz daripada pelayan
  • Tiada pendaftaran, tiada tera air
  • Percuma

How to calculate standard deviation

  1. Type or paste your numbers.
  2. Read the sample standard deviation, and the population one below it.
  3. Copy the results if you need them.

The formula

Find the mean, square each value's distance from it, add them up, divide by n − 1 (sample) or n (population), and take the square root. For 2, 4, 4, 4, 5, 5, 7, 9 the population standard deviation is exactly 2.

Soalan lazim

Is anything sent anywhere?

No. The calculation happens in your browser, and your data never leaves your device.