Compare calculators
Both calculators run independently — change the inputs on either side to compare results.
Probability
Hypothesis Testing Calculator
Run a one-sample t-test to decide whether a sample mean differs significantly from a hypothesised population mean. Returns 1 (reject the null hypothesis) or 0 (fail to reject) at your chosen confidence level using the one-sample t-statistic and a critical-value lookup.
Fill in the required fields to see your result.
Statistics
Z-Score Calculator
Convert any raw value into a z-score — the number of standard deviations it sits above or below the mean of its distribution. Used everywhere from standardised test reporting and quality control to risk modelling and machine-learning feature scaling.
Fill in the required fields to see your result.
Key differences
| Hypothesis Testing Calculator | Z-Score Calculator | |
|---|---|---|
| Category | Probability | Statistics |
| Inputs required | 6 | 3 |
| Result | Reject Null Hypothesis | Z-Score |
| What it does | Run a one-sample t-test to decide whether a sample mean differs significantly from a hypothesised population mean. Returns 1 (reject the null hypothesis) or 0 (fail to reject) at your chosen confidence level using the one-sample t-statistic and a critical-value lookup. | Convert any raw value into a z-score — the number of standard deviations it sits above or below the mean of its distribution. Used everywhere from standardised test reporting and quality control to risk modelling and machine-learning feature scaling. |