double CronbachAlpha(TMtx *Data);
The Cronbach Alpha coefficient.
| # | Name | Type | Description |
|---|---|---|---|
| 1 | Data | TMtx * |
Returns: the Cronbach Alpha coefficient, defined by the following relation: where K defines number of items (Data columns) and sigma(i,j) estimated covariance between item i and j.
Remarks:
Note
Cronbach's Alpha measures how well a set of items (or variables) measures a single unidimensional latent construct. When data have a multidimensional structure, Cronbach's Alpha will usually be low. Technically speaking, Cronbach's Alpha is not a statistical test - it is a coefficient of reliability (or consistency).
Declared in Dew::Stats::Units::Statistics · Dew.Stats/Units.Statistics.h · Cross-compiler