Z-Score Calculator
Jenzzy converts raw scores to z using mean and standard deviation for normal distribution context.
Inputs
Results
Enter values to see results.
Formula
z = (x โ ฮผ) / ฯ
Measures how many standard deviations a value lies from the mean.
Example
- Difference: 15
- z: 15/10 = 1.5= 1.5
Result: z = 1.5 (above mean)
Frequently Asked Questions
Interpretation?
|z| > 2 is often unusual in normal data.
Small samples?
t-score may be better for tiny samples.
Non-normal data?
z still standardizes but percentile rules differ.