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Ans. The Entity-Relationship (ER) model is best suited. It uses diagrams to show entities like Patients, Doctors,
and Treatments, and how they are connected. This helps the team plan a clear and correct database
before starting development.
Assertion and Reasoning Questions:

Direction: Questions 3-4, consist of two statements – Assertion (A) and Reasoning (R). Answer these questions
by selecting the appropriate option given below:

a. Both A and R are true and R is the correct explanation of A.
b. Both A and R are true but R is not the correct explanation of A.
c. A is true but R is false.

d. A is false but R is true.
3. Assertion (A): Linear regression is used to predict the value of one variable using another variable.
Reason (R): It finds the line of best fit that shows the relationship between two variables.
Ans. a. Both A and R are true, and R is the correct explanation of A.

4. Assertion (A): Relational data models are not useful for linking large datasets.
Reason (R): Relational models use tables that are disconnected and independent.
Ans. b. Both A and R are false.

Statement-based questions:
Direction: Two statements are given: Statement 1 and Statement 2. Examine the statements and mark the correct
option:
a. Statement 1 is true, Statement 2 is true
b. Statement 1 is false, Statement 2 is false

c. Statement 1 is true, Statement 2 is false
d. Statement 1 is false, Statement 2 is true
5. Statement 1: An ER diagram is helpful in understanding the relationships between different data entities.
Statement 2: An ER diagram cannot be used before designing a database.

Ans. c. Statement 1 is true, Statement 2 is false

Unsolved Questions
SECTION A (Objective Type Questions)
AI QUIZ
A. Tick (ü) the correct option.
1. What is regression used for in AI and data analysis?
a. Sending emails b. Predicting values

c. Designing apps d. Making games

2. What is the line called that best fits a scatter plot in linear regression?
a. Line of control b. Regression wall
c. Line of best fit d. Dividing line

3. In linear regression, what does the slope of the line indicate?
a. The average of the data b. The relationship between variables
c. The number of data points d. The size of the dataset

256 Touchpad Artificial Intelligence - XI