*89*

This calculator finds the

**standardized z-score**for any raw value of X, a population mean, and a population standard deviation.A z-score simply tells us how many standard deviations away from the mean a value X lies.

To find the z-score for any value of X, simply fill in the boxes below and then click the “Calculate” button.

Z score: (X – μ) / σ

Z score: (17 – 13.5) / 4 = **0.875**