Page 7 - Data Science class 11
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Assessment Resources
Objective Type Questions 3. What is causal relationships? Describe this with two examples.
4. Explain the effects of different duration of light on the growth of radish seedlings.
Solved Exercise 5. What do you understand by perception of time assessment? Also give examples to substantiate your answer.
Objective Type Questions (Section A) This section contains questions Higher Order Thinking Skills (HOTS)
Please answer the questions below in no less than 200 words.
A. Tick ( ) the correct option. 1. Is there a correlation between speaking and writing skills of an individual?
Does it get improved by experience?
[CBSE Handbook]
1. The statistical task that predicts the future as accurately as possible is known as: with specific answers. 2. If outdoor runners have higher skin disease occurrences due to time exposure in the sun, think of an independent
a. Estimating b. Predicting variable that can be used to test the relationship between running and skin diseases. What alternatives can one look
c. Forecasting d. All of these for, to negate the problem arising out of running outdoors in the sun? [CBSE Handbook]
2. Which of these are the three pillars of forecasting: 1. Management’s experience 2. Experts’ knowledge 3. Mathematical 3. We have already studied the influence of gender, age and size on reaction or response time. Think of other factors that
can affect the response time and elucidate each of these factors.
skills 4. Judgement
a. Only 1 and 3 b. Only 1,2 and 4
Applied Project
c. Only 1,2,3 d. All of these Consider a company manufacturing metal utensil for home cookware. The company has a factory in which 200 workers
3. For a perfect forecast, experts rely on: work on an everyday basis. Describe in detail, how the set-up of the factory (proper equipment, safety measure and
a. Only Qualitative forecasting infrastructure) has a correlation and causal relationship with workers of the factory. Also, try to derive the correlation
between workers of the factory, the profitability and sustenance of the company. One should also think about the end
b. Only Quantitative forecasting product the customers will be using and what difference it may cause to their lives.
[CBSE Handbook]
c. Only Objective forecasting
d. Both Qualitative and Quantitative forecasting
4. Identify the method/model that companies use to predict actions: This is based on supply and demand, as well as
prices. It proves valuable when forecasting economic future developments.
a. Time series model b. Judgemental forecasting model Higher Order Thinking Skills
c. The Delphi method d. Econometric model
5. Which one of the following is NOT an advantage of forecasting?
a. Gaining valuable insight
b. Learning from past mistakes This section contains the
c. Decreasing the life cycle costs
d. Discouraging the establishment of a new business questions that are out of the
6. Arrange the basic steps in the forecasting process in the correct order. 1. Gathering information 2. Problem definition
3. Using and evaluating a forecasting model 4. Choosing and fitting models 5. Preliminary exploratory analysis. box and helps the learner to
a. 2,3,1,4,5 b. 2,1,5,4,3
c. 1,2,3,4,5 d. 3,2,1,5,4
7. The two types of Analytic Studies are: think differently.
a. Experimental Studies and Observational Studies Answers 1. a. 2. d. 3. d 4. c. 5. a. 6. a. 7. a. 8. c. 9. a. 10. b. 11. b.
A.
b. Experimental Studies and Judgemental Studies 12. b.
c. Observational Studies and Objective Studies B. 1. Causation 2. data quality 3. Positive correlation 4. Proximate 5. visual response latency
d. Experimental Studies and Analytical Studies
142 Touchpad Data Science-XI Assessing Data 131
3. What is causal relationships? Describe this with two examples.
4. Explain the effects of different duration of light on the growth of radish seedlings.
5. What do you understand by perception of time assessment? Also give examples to substantiate your answer.
Higher Order Thinking Skills (HOTS)
Please answer the questions below in no less than 200 words.
1. Is there a correlation between speaking and writing skills of an individual?
Does it get improved by experience? [CBSE Handbook]
2. If outdoor runners have higher skin disease occurrences due to time exposure in the sun, think of an independent
variable that can be used to test the relationship between running and skin diseases. What alternatives can one look Applied Project
for, to negate the problem arising out of running outdoors in the sun? [CBSE Handbook]
3. We have already studied the influence of gender, age and size on reaction or response time. Think of other factors that
can affect the response time and elucidate each of these factors.
Applied Project This section contains an activity
Consider a company manufacturing metal utensil for home cookware. The company has a factory in which 200 workers
work on an everyday basis. Describe in detail, how the set-up of the factory (proper equipment, safety measure and that applies the concepts of the
infrastructure) has a correlation and causal relationship with workers of the factory. Also, try to derive the correlation
between workers of the factory, the profitability and sustenance of the company. One should also think about the end
Standard Questions product the customers will be using and what difference it may cause to their lives. [CBSE Handbook] chapter in real-life.
This section contains
theory based questions.
Projects
This section has an
assessment to develop
Standard Questions (Section B)
A. Short answer type questions: Answers practical proficiency.
1. What is the difference between story and facts? A. 1. a. 2. d. 3. d 4. c. 5. a. 6. a. 7. a. 8. c. 9. a. 10. b. 11. b.
Ans. Facts are something that actually exist in reality and always represent the truth whereas stories are a narrative; either 12. b.
true or fictitious about things, ideas, beliefs, objects, products or services. B. 1. Causation 2. data quality 3. Positive correlation 4. Proximate 5. visual response latency
2. What do you mean by correlation?
Ans. Correlation is a relationship or connection between two variables where whenever one changes, the other is also likely to
change. Correlation is used to describe the linear relationship between two continuous variables (e.g., height and weight). Assessing Data 131
3. Children are playing cricket in a ground and one of them broke a glass window. What is the cause here (a) The child or PROJECTS
(b) the ball. Experiential Learning
Ans. The child caused the window to break. This is according to the concept of agent causation. Life Skills & Values
4. For what purpose, a trial assessment may be necessary? Interdisciplinary
Ans. A trial assessment is a set of steps executed to support, reject or confirm an assumption. The idea behind performing
the trial assessment is to test something. Project 1—Poster making based on the concept of AI Ethics.
In the chapter AI Ethics, we have seen how unethical data handling resulted into not only loss of reputation but also
5. A drunk person does not look at the road while driving a car and hence causes an accident. Explain the real/root cause loss of customers. This is because negative scenarios arise if ethical guidelines are disrespected. So, to raise awareness
and effect here. about this vital topic, design a poster based on the question given below.
Ans. The drunk person causes the accident because alcohol is a depressant that slows down the brain and also affects the “How can we visually communicate the principles of AI Ethics to raise awareness and promote responsible development
body’s responses. Driving a car is neither the cause nor the effect. Alcohol is the cause here, because it affects drivers and use of artificial intelligence?”.
in such a way that it affects their senses, judgement, vigilance and self-control, and accident is the effect.
6. Differentiate between treatment variable and response variable.
Ans. By treatment variable, we refer to the procedure variable. The treatment variable is generally an independent variable.
On the other hand, the response variable is a dependent variable. Model Test Paper
B. Long answer type questions:
1. What is the difference between positive and negative correlation? [CBSE Handbook] DATA SCIENCE (SUBJECT CODE–844)
Ans. Following are the differences between positive and negative correlation:
• Positive correlation: It is a relationship between two variables in which both variables move along the same CLASS XI (SESSION 2023–2024)
direction. In other words, when one variable is directly proportional to the other variable. An example of positive
correlation would be height and weight because taller people usually have more weight. Max. Time: 2 Hours Max. Marks: 50
• Negative correlation: It is a relationship between two variables in which both variables move in opposite direction. General Instructions: Project 2—Trial Assessment
In other words, when one variable is inversely proportional to the other variable. An example of negative correlation
would be height above sea level and temperature. As you climb the mountain (increase in height) it gets colder 1. Please read the instructions carefully. It is a set of steps executed to support, reject or confirm an assumption. This is performed to understand what is meant
by the cause-and-effect relationship. In the space provided below, take up any example to demonstrate this concept.
(decrease in temperature). 2. This Question Paper consists of 21 questions in two sections: Section A & Section B.
2. What is the need of storytelling in different organisations? 3. Section A has Objective type questions whereas Section B contains Subjective type questions.
Ans. In business, companies that can tell their story effectively have a better chance at success. Because a well-told success 4. Out of the given (5 + 16) = 21 questions, a candidate has to answer (5 + 10) = 15 questions in the allotted
story can make the difference between a sale and a wasted call. The more customer stories there are, the easier it is for (maximum) time of 2 hours.
a prospect to be convinced. 5. All questions of a particular section must be attempted in the correct order.
3. What is the meaning of causation in statistics, and how is it different in case of legal proceeding? 6. SECTION A – OBJECTIVE TYPE QUESTIONS (24 MARKS):
Ans. Causation indicates a relationship between two events, where one event is affected by the other. In statistics, when the i. This section has 05 questions.
value of one event, or variable, increases or decreases as a result of other events, it is said that there is causation. ii. Marks allotted are mentioned against each question/part.
Causation, in legal terms, refers to the relationship of cause and effect between one event or action, and the result. It iii. There is no negative marking.
iv. Do as per the instructions given.
is the act or process that produces an effect. In a personal injury case, one must establish causation— meaning that 7. SECTION B – SUBJECTIVE TYPE QUESTIONS (26 MARKS):
it is not enough to show that the defendant was negligent. The negligence must be what caused the injuries of the
complainant. i. This section has 16 questions.
ii. A candidate has to do 10 questions. 294 Touchpad Data Science-XI
128 Touchpad Data Science-XI iii. Do as per the instructions given.
iv. Marks allotted are mentioned against each question/part.
SECTION A: OBJECTIVE TYPE QUESTIONS
Q. 1. Answer any 4 out of the given 6 questions on Employability Skills (1 × 4 = 4 marks)
i. Which of the following factors does not improve active listening?
a. Eye contact b. Being occupied
c. Gestures d. Giving feedback
ii. What is the meaning of R in ‘SMART” in goal setting? Model Test Paper
a. Right b. Rigid
c. Realistic d. Reasonable
iii. Which of the following sentences show intrinsic motivation?
a. Reema helps others as it gives her satisfaction. It is a model test paper for
b. Ravi serves in a restaurant for extra income.
c. Seema planted maximum trees to get the special prize.
d. Ronit visits orphanage for his community service for his school project. students to practise.
Model Test Paper 299

