AI ML Quiz

What is the primary goal of machine learning?

• Classification

• Prediction

• Optimization

• Clustering

Which term refers to the process of a machine learning model improving its performance over time?

• Training

• Validation

• Testing

• Iteration

What do we call the data used to train a machine learning model?

• Validation data

• Testing data

• Unlabeled data

• Training data

Which type of machine learning task involves grouping data points into categories?

• Regression

• Clustering

• Classification

• Dimensionality reduction

Which evaluation metric is commonly used for classification tasks?

• Mean Absolute Error (MAE)

• Root Mean Squared Error (RMSE)

• Accuracy

• R-squared

What is the process of selecting the best-performing model out of a set of candidate models?

• Testing

• Training

• Validation

• Model selection

Which type of machine learning algorithm learns to make predictions based on historical data?

• Supervised learning

• Unsupervised learning

• Reinforcement learning

• Semi-supervised learning

Which method is used to handle missing data in machine learning?

• Dropping rows with missing values

• Filling missing values with the mean

• Imputation

• All of the above

What is the purpose of feature scaling in machine learning?

• To speed up the training process

• To make different features comparable

• To reduce overfitting

• To visualize data better

Which machine learning algorithm is often used for regression tasks?

• K-means

• Decision tree

• K-nearest neighbors

• Linear regression