First quartile of standard deviation of attributes of the numeric type.
| cylinder-bands (1) | 2.3479287482044 |
| hypothyroid (1) | 1.0405679745439 |
| hayes-roth_test (1) | 1.0641113786489 |
| hayes-roth_train (1) | 1.0509744918808 |
| heart-h (1) | 1.0534298736765 |
| page-blocks (1) | 2.0039007144358 |
| anneal (1) | 10.505435772171 |
| autos (1) | 2.4435219699049 |
| glass (1) | 1.219013966937 |
| lymph (1) | 0.31355654268499 |
| hepatitis (1) | 1.0719925454752 |
| heart-c (1) | 1.0542400138037 |