Z-Score Calculator (Value, Array, Flag)

Z‑Score Calculator

Calculate the z‑score for a given value relative to an array of numbers using either the sample or population standard deviation.

* Enter the observed value, a comma‑separated list of numbers, and choose “Sample” (dividing by \(n-1\)) or “Population” (dividing by \(n\)).

Step 1: Enter Data

Observed Value:

e.g., 100

Array (comma‑separated):

Enter a list of numbers.

Standard Deviation Type:

Select the method for standard deviation.