Meanings of random variation in English

Differences between the pregnancy rates achieved by the physicians are within the limits of random variation.

For individual types of surgery, case mix varied less between hospitals, and differences were explained largely by random variation.

The observed trends are unlikely to be explained by random variation, changes in exhaustiveness or quality of data collection and registration.

Statistical analysis showed that 96% of mean square prediction error for feces and urine N output predictions was due to random variation.

Theories such as Darwin's, which assume a random variation which is not primarily a response to environmental changes, answer the problem in Geoffroy's sense.

The variation in SSI rate between hospitals was estimated with multivariable fixed- and random -effects logistic regression models to account for random variation and case mix.

What happens if it decides it doesn't need any random variations any more?

Bagging generates random variations of the training set by resampling, applies the same learner to each one, and combines the results by voting.

You can estimate the bias and variance of a learner by comparing its predictions after learning on random variations of the training set.

The raw data, and even the partially processed raw data, was too complex and too full of random variations for human beings to interpret.

Results: Significant difference between neighborhood random variations in physical activity was identified (P=0.0134); neighborhood-level differences accounted for 3.0% of the variability in leisure-time physical activity.