Why is cross validation better than simple train test split?

Related questions

1. What is StandardScaler?
2. How SVM can be used for classification?
3. Does cross validation improve accuracy?
4. What is the difference between SVM and SVR?
5. Why are support vectors called?
6. What does gamma mean in SVM?
7. What kernel is used in SVM?
8. What is multiclass SVM?
9. When use logistic regression vs SVM?
10. Why is it important to standardize?

Tags

1. #score
2. #cross
3. #because
4. #unseen
5. #perform
6. #validation
7. #model
8. #multiple
9. #indication
10. #preferred
11. #usually
12. #gives
13. #dependent
14. #splits
15. #opportunity
16. #makes
17. #better
18. #method
19. #train
20. #split