Machine Learning: Data Insights Unlocked

Which of the following machine learning types involves learning from labeled data?

• AUnsupervised Learning
• BReinforcement Learning
• CSupervised Learning
• DSemi-Supervised Learning

Which of the following is NOT a common evaluation metric for regression models?

• AMean Squared Error (MSE)
• BR-squared
• CRoot Mean Squared Error (RMSE)
• DAccuracy

What is the purpose of dimensionality reduction techniques like Principal Component Analysis (PCA)?

• ATo improve the accuracy of the model by adding more features.
• BTo reduce the number of variables while preserving important information.
• CTo create clusters of similar data points.
• DTo train the model faster.

What is the primary goal of reinforcement learning?

• ATo predict continuous output variables.
• BTo classify data points into predefined categories.
• CTo learn a policy that maximizes a reward signal through interaction with an environment.
• DTo discover hidden patterns in unlabeled data.

Which of the following algorithms is a probabilistic classifier based on Bayes' theorem?

• AK-Nearest Neighbors (KNN)
• BSupport Vector Machines (SVM)
• CNaive Bayes
• DDecision Trees