Machine Learning Basics with Scikit-Learn

Evaluate your understanding of datasets,model training,and evaluation in scikit-learn.

1. Which type of machine learning requires labeled training data?

Supervised Learning Unsupervised Learning Reinforcement Learning Semi-Supervised Learning

2. Which Scikit-Learn module contains tools for data preprocessing?

sklearn.preprocessing sklearn.models sklearn.learn sklearn.data

3. Which of the following is a regression algorithm in Scikit-Learn?

LinearRegression KMeans PCA DBSCAN

4. What is the default scoring metric for LogisticRegression in Scikit-Learn?

Accuracy Precision Recall F1-Score

5. Which method is used to train a Scikit-Learn model on data?

fit() train() learn() predict()

6. What does the 'fit_transform()' method do in Scikit-Learn preprocessing?

Fits the model to data and returns transformed data Only fits the model to data Only transforms the data Splits data into train and test sets

7. Which built-in dataset in Scikit-Learn is commonly used for classification tasks?

Iris Boston Housing MNIST CIFAR-10

8. RandomForestClassifier is an example of which type of model?

Ensemble Linear Clustering Dimensionality Reduction

9. Select all examples of supervised learning algorithms in Scikit-Learn.

LinearRegression KMeans SVM (SVC) PCA DecisionTreeClassifier

10. Which of the following are preprocessing techniques in Scikit-Learn?

StandardScaler OneHotEncoder train_test_split GridSearchCV LabelEncoder

11. Which metrics are used for evaluating regression models?

Accuracy R-squared (R²) Mean Squared Error (MSE) Precision Mean Absolute Error (MAE)

12. Which Scikit-Learn tools are used for model selection?

GridSearchCV RandomizedSearchCV train_test_split KFold StandardScaler

13. Select all clustering algorithms available in Scikit-Learn.

KMeans DBSCAN AgglomerativeClustering LinearRegression SVM

14. Scikit-Learn provides built-in deep learning models.

True False

15. The 'predict()' method of a classifier returns class labels, while 'predict_proba()' returns class probabilities.

True False

16. Unsupervised learning requires labeled training data.

True False

17. All Scikit-Learn estimators implement the 'fit' method.

True False

18. What does 'ML' stand for in the context of machine learning?

19. Name the Scikit-Learn function used to compute cross-validation scores (abbrev.)

20. What is the full form of 'SVM'?

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