stats.cronbach_alpha_ci
stats.cronbach_alpha_ci(alpha, n, m, ci)Confidence interval for Cronbach’s alpha.
Parameters
| Name | Type | Description | Default |
|---|---|---|---|
| alpha | float | Cronbach’s alpha. | required |
| n | int | Number of repetitions, e.g., items, parallel tests, repeated measures of brain response patterns. | required |
| m | int | Number of individuals, e.g., test-takers, voxels, vertices. | required |
| ci | float or tuple of float | Confidence level. If float, it should be between 0 and 1, e.g., 0.95 for 95% confidence interval. If tuple, it should be a pair of floats between 0 and 1, e.g., (0.025, 0.975) for 95% confidence interval. | required |
Returns
| Name | Type | Description |
|---|---|---|
| ci | tuple of float | Confidence interval. |
Notes
Feldt, L. S., Woodruff, D. J., & Salih, F. A. (1987). Statistical Inference for Coefficient Alpha. Applied Psychological Measurement, 11(1), 93–103. https://doi.org/10.1177/014662168701100107