![python - Big difference in score (10%) between a split_test_train and a cross validation - Stack Overflow python - Big difference in score (10%) between a split_test_train and a cross validation - Stack Overflow](https://i.stack.imgur.com/FOy4b.png)
python - Big difference in score (10%) between a split_test_train and a cross validation - Stack Overflow
Data School - 🤖⚡ scikit-learn tip #31: If you use cross-validation and your samples are NOT in an arbitrary order, shuffling may be required to get meaningful results. Use KFold or StratifiedKFold
![machine learning - What is difference between accuracy_score() and cross_val_score()? - Cross Validated machine learning - What is difference between accuracy_score() and cross_val_score()? - Cross Validated](https://i.stack.imgur.com/l2N3B.png)