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3. Which of the following is labelled data?
a. Unmarked data b. Marked or tagged data
c. Raw data d. Unusable data
4. Which of the following types of datasets does unsupervised learning use?
a. Labelled dataset b. Unlabelled dataset
c. Partially labelled dataset d. Fixed rules dataset
5. Which of the following uses unsupervised learning?
a. A chatbot answering FAQs using predefined rules.
b. A model predicting exam scores based on past performance.
c. Grouping photos in a gallery into "vacation", "family", and "pets" categories.
d. A weather prediction system using historical data.
6. What type of feedback does reinforcement learning use?
a. Labelled data feedback b. Unlabelled data feedback
c. Reward and penalty feedback d. No feedback
7. Identify the role of the input layer in a neural network.
a. Computation b. Receive data
c. Predictions d. Activation functions
8. Which Machine Learning technique is best for grouping customers based on their shopping behaviours?
a. Regression b. Classification
c. Association d. Clustering
9. An AI agent playing a game and learning from its rewards and penalties is an example of: [CBSE Handbook]
a. Supervised Learning b. Unsupervised Learning
c. Reinforcement Learning d. Evolutionary Learning
10. Reinforcement learning is particularly useful for scenarios where: [CBSE Handbook]
a. Large amounts of labelled data are available.
b. The desired outcome is clear, but the path to achieve it is unknown.
c. The data is structured and easily categorized.
d. The task requires reasoning and logical deduction.
B. Fill in the blanks.
1. The ……….……................ approach refers to a model where the relationship or patterns in the data are not defined by the
developer.
2. Machine Learning models improve their performance using ……….……................ data.
3. ……….……................ is an unsupervised learning technique used to group similar data points into clusters.
4. ……….……................ is a mathematical approach to find a relationship between two or more variables.
5. A Neural Network is divided into multiple layers and each layer is further divided into several blocks called
……….…….................
Advanced Concepts of Modeling in AI 207

