Z-Score Calculator
Standardize each value: z = (x − mean) / standard deviation.
Your data
Separate values with commas, spaces, or new lines. Pasting from Excel works.
Result
Mean
70.2222
Std deviation (sample)
10.7329
Z-scores
| x | z |
|---|---|
| 55 | -1.4183 |
| 60 | -0.9524 |
| 62 | -0.7661 |
| 68 | -0.207 |
| 70 | -0.0207 |
| 72 | 0.1656 |
| 75 | 0.4452 |
| 80 | 0.911 |
| 90 | 1.8427 |