Find z values using statistical formulas with reliable calculations and clear results for students, researchers, analysts, and professionals everywhere.
The z value formula measures how far a data point is from the average value.
The mathematical formula is:
Z = (X - μ) / σ
Here, X represents the individual data value. μ represents the population mean. σ represents the standard deviation.
A positive z value means the value is above the mean. A negative z value means the value is below the mean.
Enter the observed data value in the first field. Provide the average value in the second field.
Enter the standard deviation value carefully. Press the calculate button to view the z result.
The calculator instantly displays the standardized score. It helps compare values from different datasets.
Important Note: All the Calculators listed in this site are for educational purpose only and we do not guarentee the accuracy of results. Please do consult with other sources as well.