Free Data Analyst Machine Learning Questions and Answers

Question 1

What is the primary goal of machine learning?

Accepted Answer

To make predictions or decisions without being explicitly programmed

Answer

To manually analyze data

Answer

To clean data

Answer

To store data efficiently

Question 2

Which of the following is a supervised learning algorithm?

Accepted Answer

Decision Trees

Answer

K-Means Clustering

Answer

Principal Component Analysis (PCA)

Answer

Association Rule Mining

Question 3

In machine learning, what is "overfitting"?

Accepted Answer

When a model performs well on training data but poorly on new data

Answer

When a model does not capture enough complexity from the data

Answer

When a model captures too little data

Answer

When a model cannot classify any data

Question 4

What is the purpose of cross-validation in machine learning?

Accepted Answer

To evaluate a model's performance on unseen data

Answer

To improve model performance on training data

Answer

To increase data storage efficiency

Answer

To test model predictions using the same data

Question 5

Which type of machine learning algorithm is commonly used for clustering?

Accepted Answer

K-Means

Answer

K-Nearest Neighbors (KNN)

Answer

Random Forest

Answer

Logistic Regression