Standardization Calculator

Standardize a value by subtracting the mean and dividing by the standard deviation (z-score standardization).

Standardized Value (z)

1.500000

Deviation from Mean15.0000
|z|1.500000

Standardized Value (z) vs Value to Standardize

查看公式 →

公式

## How to Standardize Data (Z-Score) ### Formula **Z = (X - Mean) / SD** Standardization (z-score transformation) converts data to have mean 0 and standard deviation 1. Each standardized value tells you how many standard deviations the original value is from the mean. This is the most common preprocessing step in statistics and machine learning.

计算示例

Dataset has mean 60 and SD 10. Standardize the value 75.

  1. 01Z = (75 - 60) / 10 = 15 / 10 = 1.5
  2. 0275 is 1.5 standard deviations above the mean
  3. 03After standardization, the value is 1.5