Class 12 AI 843 Previous Year Question Paper 2023 – Compartment – Solution

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Series ƩHEFG/C
Question Paper Code 367 Set 4

ARTIFICIAL INTELLIGENCE – SOLUTION
(Session 2022-23)

Time allowed : 2 hours
Maximum Marks : 50

General Instructions :

  1. Please read the instructions carefully.
  2. This Question Paper consists of 21 questions in two sections: Section A & Section B.
  3. Section A has Objective type questions whereas Section B contains Subjective type questions.
  4. Out of the given (5 + 16 =) 21 questions, a candidate has to answer (5 + 10 =) 15 questions in the allotted (maximum) time of 2 hours.
  5. All questions of a particular section must be attempted in the correct order.
  6. SECTION A – OBJECTIVE TYPE QUESTIONS (24 MARKS):
    • i. This section has 05 questions.
    • ii. Marks allotted are mentioned against each question/part.
    • iii. There is no negative marking.
    • iv. Do as per the instructions given.
  7. SECTION B – SUBJECTIVE TYPE QUESTIONS (26 MARKS):
    • i. This section has 16 questions.
    • ii. A candidate has to do 10 questions.
    • iii. Do as per the instructions given.
    • iv. Marks allotted are mentioned against each question/part.

Section – A (Objective Type Questions)

1. Answer any 4 out of the given 6 questions on Employability Skills. 4×1=4

(i) ____ id s term uded to describe a person’s ability to recognise what results are important and the steps needed to be taken to achieve them.
a) Self-reflection
b) Result orientation
c) Motivation
d) Inspiration

(II) Which of the following personality disorders is characterised by distrust for others, including friends, family members and partners ?
a) Antisocial
b) Schizoid
c) Paranoid
d) Narcissistic

(III) ____ refers to the process of enhancing entrepreneurial skills and knowledge through structured training and institution building programmes.
a) Entrepreneurs work culture
b) Entrepreneurship development
c) Entrepreneurship selection
d) Entrepreneur management

(IV) In a spreadsheet software, an arrangement of cells in a horizontal manner is known as :
a) Worksheet
b) Workbook
c) Column
d) Row

(V) Which of the following is not an example of a presentation software ?
a) LibreOffice Impress
b) Microsoft Office – PowerPoint
c) Notepad
d) Google Slides

(VI) Individuals, who focus on developing solutions that benefit the society, are called ____.
a) Social entrepreneurs
b) Industrial entrepreneurs
c) Agricultural entrepreneurs
d) Technical entrepreneurs

2. Answer any 5 out of the given 6 questions. 5×1=5

(I) Which of the following is the first step of an AI project ?
a) Problem definition
b) Data gathering
c) Feature definition
d) Al model construction

(II) Data storytelling involves a combination of ____ key elements.
a) two
b) three (Data, Visulization, Narrative)
c) four
d) five

(III) A ____ set is a set of historical data in which the outcomes are already known.
a) current
b) instant
c) training
d) output

(IV) The first fundamental step, when starting an AI initiative is ____ and selecting the relevant use cases, that the AI model will be built to address.
a) scoping
b) deployment
c) thinking
d) designing

(V) The train-test procedure is appropriate when there is a sufficiently ____ dataset available.
a) small
b) moderate
c) large
d) average

(VI) In AI development, which of the following frameworks is used ?
a) Python
b) Visual Basic
c) XGBoost
d) C++

3. Answer any 5 out of the given 6 questions. 5 x 1=5

(I) Expand the term RMSE.
a) Rational Median Square Error
b) Root Median Square Estimate
c) Root Mean Squared Error
d) Root Median Sequential Estimate

(II) When the ____ is accompanied with data, it helps to explain the audience what’s happening in the data and why a particular insight has been generated.
a) visuals
b) narrative
c) project
d) graphs

(III) Which of the following is not True for Testing ?
a) Data validation is important.
b) The volume of test data can be large.
c) Your testing team should test the AI and ML algorithms keeping model validation.
d) Regulatory compliance testing and security testing are not so important.

(IV) A narrative shows the audience where to look and what not to miss and also keeps the audience ____.
a) happy
b) confused
c) engaged
d) enlightened

(V) In ____ stage, the data scientist will play around with different algorithms to ensure that the variables in play are actually required.
a) Evaluation
b) Data Modelling
c) Data requirement
d) Problem scoping

(VI) Given below are two statements, one labelled as Assertion (A) and the other labelled as Reason (R). Select the correct answer from the code given below :
Assertion (A) : The first fundamental step when starting an AI initiative is building the model.
Reason (R) : First stage of AI initiative involves the planning and motivational aspects of your project.
Code :
a) Both Assertion (A) and Reason (R) are true and Reason (R) is the correct explanation of Assertion (A).
b) Both Assertion (A) and Reason (R) are true, but Reason (R) is not the correct explanation of Assertion (A).
c) Assertion (A) is true, but Reason (R) is false.
d) Assertion (A) is false, but Reason (R) is true.

4. Answer any 5 out of the given 6 questions. 5×1=5

(I) Which of the following is not a development tool in building an AI model ?
a) DataRobot
b) H2O
c) Watson Studio
d) Visual Basic

(II) Which of the following is a key element of a data story ?
a) audience
b) information
c) engage
d) narrative

(III) If there is no ____ in the data, then the problem cannot be solved with AI technology.
a) language
b) pattern
c) logic
d) program

IV) Data ____ is a structured approach for communicating insights drawn from data.
a) storytelling
b) representation
c) acquisition
d) exploration

(V) Which of the following are correct ?
a) If the data you collect is not good, you won’t to be able to build an effective AI algorithm.
b) The testing phase is essentially an iterative process.
c) Test data should not include all relevant subsets of training data.
d) Once the relevant projects have been selected and properly scoped, the next step of the machine learning life cycle is testing.
(According to us Option C is INCORRECT. Comment if you know the answer or if any mistake in Question.)

(VI) ____ functions predict a quantity, and classification functions predict a label.
a) Regression
b) Continuous
c) Algorithm
d) Dataset

5. Answer any 5 out of the given 6 questions. 5×1=5

(I) ____ create engaging experiences that transport the audience to another space and time.
a) Stories
b) Algorithms
c) Visualizations
d) Information

(II) ____ is a method to find the minimum point of a function.
a) Objective function
b) Focal loss
c) Loss function
d) Gradient descent

(III) Which of the following is the most preferred language for building an AI or machine learning model ?
a) C++
b) TensorFlow
c) Python
d) DataRobot

(IV) Which of the following is true for Train-Test Split Evaluation ?
a) The procedure involves taking a dataset and dividing it into two subsets.
b) The train-test procedure is appropriate when there is a small dataset.
c) The objective is to estimate the performance of the user.
d) It cannot be used for classification or regression problems.

(V) _____ is the last stage of the AI model life cycle.
a) Scoping
b) Design
c) Deployment
d) Build

(VI) Study the following graph :
Class 12 IA 843 Previous Year Question Paper 2023 - Compartment Q.5-vi
What do the dots represent in the above figure ?
a) Actual values
b) Set of predicted values
c) They represent the error
d) Values at Y axis

Section – B (Subjective Type Questions)

Answer any 3 out of the given 5 questions on Employability Skills. 3×2=6
Answer each question in 20-30 words :

6. Define any two of the following :
(a) Self-management
Answer: Self-management is the ability to regulate one’s behavior, emotions, and actions effectively, maintaining self-control and adaptability in various situations.
(b) Self-awareness
Answer: Self-awareness is the capacity to recognize and understand one’s emotions, strengths, weaknesses, and values, enabling better decision-making and personal growth.
(c) Motivation
Answer: Motivation is the inner or external drive that pushes people to start, continue, and attain their goals or tasks.

7. Mention any two ways to maintain positive attitude.
Answer: (a) Think positively by looking for the good side of situations.
(b) Surround yourself with happy and supportive people.

8. Differentiate between a worksheet and a workbook.
Answer: A worksheet is a single grid or page where you enter and manipulate data in applications like Microsoft Excel. A workbook, on the other hand, is a collection of multiple worksheets, allowing you to organize and manage related data and calculations in one file.

9. Mention any two characteristics of entrepreneurship.
Answer: (a) Risk Taking (b) Problem Solver

10. What are Startups ?
Answer: Startups are new, often small companies, businesses or ventures that are just beginning. They are usually focused on innovative ideas and aim for rapid growth and success.

Answer any 4 out of the given 6 questions in 20-30 words each. 4×2=8

11. What is Design thinking ?
Answer: Design thinking is a problem-solving approach that emphasizes understanding user needs, brainstorming creative solutions, and prototyping to develop innovative and user-centric products, services, or processes.

12. Explain the term Train-Test Split Evaluation.
Answer: Train-test split is a method in machine learning to assess a model’s performance. It divides data into two parts: one for training and the other for testing.

13. Give any two factors that make storytelling a powerful tool.
Answer: Storytelling engages the audience emotionally and simplifies complex ideas, making it easier to understand and remember, enhancing communication.

14. Differentiate between Train dataset and Test dataset.
Answer: The training dataset is used to train a machine learning model, while the test dataset is reserved for evaluating the model’s performance on unseen data.

15. What is Cross-Validation Procedure ?
Answer: Cross-validation is a technique to assess a model’s generalization by dividing data into multiple subsets and iteratively training and testing, providing more robust performance estimates.

16. Mention one reason why scoping is one of the most important parts of your AI project.
Answer: Scoping clarifies project goals, ensuring alignment with objectives and resources, and helping to avoid misdirected AI efforts, making it a critical project phase.

Answer any 3 out of the given 5 questions in 50-80 words each. 3×4=12

17. The following is the diagram depicting the foundational methodology of data science.
Class 12 IA 843 Previous Year Question Paper 2023 - Compartment Q.17
The diagram is marked with A, B, C, D. Identify these steps and briefly explain the significance of steps marked as ‘A’ and ‘B’.
Answer: A – Business understanding: In this step, we learn about the problem we want to solve with data science, and what the business goals are.
B – Data collection: We gather relevant data that can help solve the problem, ensuring it’s accurate and enough for analysis.
C – Modelling: We use data to build mathematical models that help us make predictions or decisions.
D – Deployment: After a successful model, we put it to work in the real world to solve the business problem.

18. Mention any four considerations that should be kept in mind during the testing phase.
Answer: Four considerations that should be kept in mind during the testing phase are following:
(i) Test Data Quality: Ensure that the test dataset is representative and reflects real-world scenarios.
(ii) Evaluation Metrics: Choose appropriate metrics to measure the model’s performance, aligning them with project goals.
(iii) Model Fairness: Assess and address any biases in the model’s predictions to ensure fairness and avoid discrimination.
(iv) Cross-Validation: Implement cross-validation to test the model’s generalization across different subsets of the data, reducing overfitting risks.

19. Explain the main stages of the AI Model Life cycle.
Answer:
AI-lifecycleImage Source datascience-pm.com
Problem Definition: In this stage, the problem or task to be solved using AI is clearly defined. Objectives, scope, and success criteria are established.
Data Acquisition and Preparation: Data, a critical component for AI, is collected, cleaned, and processed. Data quality, relevance, and format are assessed.
Model Development and Training: Machine learning models are built, choosing appropriate algorithms. The model is trained on historical data to learn patterns and relationships.
Model Evaluation and Refinement:
The model’s performance is evaluated using various metrics. Refinements and optimizations are made to enhance model accuracy and reliability.
Deployment:
The trained model is integrated into real-world applications or systems. It starts making predictions or decisions, impacting business operations.
Machine Learning Operations (MLOps):
Ongoing monitoring and maintenance ensure the model’s performance. Model updates, retraining, and scaling are part of MLOps to keep the AI solution efficient and effective.

20. Mention any four reasons due to which data storytelling has acquired a place of importance.
Answer: Enhanced Communication: Data storytelling simplifies complex information, making it more accessible and understandable for a broader audience, fostering better communication.
Engagement: It captures and retains audience interest by presenting data in a narrative format, making it more engaging and memorable.
Memorability: Information presented in a narrative form is more memorable, making it easier for the audience to recall and apply later
Emotional Connection: Stories appeal to emotions and foster a stronger connection with the data, helping people relate to the information.

21. Consider the following graph. Mention the steps that can assist in finding compelling stories in the data sets.
Class 12 IA 843 Previous Year Question Paper 2023 - Compartment Q.21
Answer:

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