CBSE | DEPARTMENT OF SKILL EDUCATION

DATA SCIENCE (SUBJECT CODE - 419)

Blue-print for Sample Question Paper for Class X (Session 2022-2023)
Max. Time: 2 Hours Max. Marks: 50

PART A - EMPLOYABILITY SKILLS (10 MARKS):

OBJECTIVE TYPE SHORT ANSWER

S. QUESTIONS TYPE QUESTIONS TOTAL
NAME OF THE UNIT
NO. QUESTIONS
1 MARK EACH 2 MARKS EACH

1 Self-Management Skills - II 2 2 4
2 ICT Skills - II 2 1 3
3 Entrepreneurial Skills - II 2 2 4
TOTAL QUESTIONS 6 5 11
NO. OF QUESTIONS TO BE ANSWERED Any 4 Any 3 07
TOTAL MARKS 1x4=4 2x3=6 10 MARKS

PART B - SUBJECT SPECIFIC SKILLS (40 MARKS):

OBJECTIVE SHORT DESCRIPTIVE/

TYPE ANSWER TYPE LONG ANS. TYPE
UNIT TOTAL
NAME OF THE UNIT QUESTIONS QUESTIONS QUESTIONS
NO. QUESTIONS
1 MARK EACH 2 MARKS EACH 4 MARKS EACH
Use of statistics in
1 7 1 1 9
Data Science
Distributions in Data
2 5 1 1 7
Science
3 Identifying Patterns 3 1 1 5
4 Data Merging 6 2 1 9
5 Ethics in Data Science 3 1 1 5
TOTAL QUESTIONS 24 6 5 35
NO. OF QUESTIONS
20 Any 4 Any 3 27
TO BE ANSWERED
TOTAL MARKS 1 x 20 = 20 2x4=8 4 x 3 = 12 40 MARKS

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CBSE | DEPARTMENT OF SKILL EDUCATION
DATA SCIENCE (SUBJECT CODE - 419)
Sample Question Paper for Class X (Session 2022-2023)
Max. Time: 2 Hours Max. 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.

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 SECTION A: OBJECTIVE TYPE QUESTIONS

Q. 1 Answer any 4 out of the given 6 questions on Employability Skills (1 x 4 = 4 marks)

i. What are the ABC of Stress Management? 1

a) Avertible, Belief, Consequences.

b) Adversarial, Being, Control,
c) Adversity, Belief, Consequences
d) Adversity, Belief, Control

ii. Which of the below is not a step of Effective Time Management– 1

a) Organize
b) Prioritize
c) Control
d) Remember

iii. ICT stands for 1

a. International Communication Technology

b. Information Communication Technology
c. Informative Communicative Technology
d. International Communicative Technology

iv. Things we need a mouse for – 1

a) Hover, Point and click, turn on, Typing

b) Roll over, Drop and Drag, Double click, Typing
c) Drop and Drag, Hover, Turn on, Double Click
d) Hover, Point and click, Drop and Drag, Double Click

v. Akash wanted to build his shoe business. He doesn’t have money, so he borrowed 1
money from his family and the bank. After 2 years, he paid off all the debts. He
is………………

a. Diligent
b. Decisive
c. Composed
d. All of the above

vi. Name the two types of employment 1

i. Self-Employment
ii. Individual Employment
iii. Wage Employment
iv. Group Employment
a. Both i and iii b. Both ii and iii c. Both ii and iv d. Both i
and iv

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Q. 2 Answer any 5 out of the given 6 questions (1 x 5 = 5 marks)
i. Which of the following is NOT a way of subsetting data? 1
i. Row based
ii. Column based
iii. Feature based
iv. Data specific
ii. Mean is also termed as 1
i. complex average
ii. strike point
iii. compound
iv. simple average
iii. Median is the __________ point of the sorted data set. 1
i. first
ii. middle
iii. last
iv. outlier
iv. MAD is the ___________ of how far away all values in a data set are from the mean. 1
i. average
ii. sum
iii. difference
iv. product
v. Depth of an ocean and weight of a person are examples of 1
i. discrete data
ii. continuous data
iii. both discrete and continuous data
iv. neither discrete nor continuous data
vi. Which of the following is principle for the ethical guidelines around Data Analysis? 1
i. Shared private information can be made public
ii. Customers should not have a clear view of how their data is being
used.
iii. Data should interfere with the human will
iv. Data should never institutionalize unfair biases

Q. 3 Answer any 5 out of the given 6 questions (1 x 5 = 5 marks)

i. The relationship between each employee of a company and their unique employee 1
ID is an example of
i. One to One join
ii. One to Many join
iii. Many to Many join
iv. Many to One join
ii. According to the Central Limit Theorem, the shape of the sampling distribution will 1
always approach normality as the sample size __________
i. decreases
ii. increases
iii. remains same
iv. decreases exponentially

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 iii. Which of the following is NOT a common cognitive bias? 1
i. Selection bias
ii. Linearity bias
iii. Modulation bias
iv. Confirmation bias
iv. ________________ is the measure of how spread-out data points are. 1
i. Differential deviation
ii. Spatial distribution
iii. Standard distribution
iv. Standard deviation
v. Which of the following is/are ways(s) of discarding physical data? 1
i. Shredding the documents
ii. Cutting the documents
iii. Burning the documents
iv. All of the mentioned
vi. ________________ framework aims at creating methods, set of responsibilities 1
and processes to standardize, integrate, protect and store data.
i. Data administration
ii. Data management
iii. Data governance
iv. Data democracy

Q. 4 Answer any 5 out of the given 6 questions (1 x 5 = 5 marks)

i. In the formula to calculate the Z score, 1
Z = (x-μ)/σ
μ stands for
i. Raw score
ii. Population mean
iii. Population density
iv. Standard deviation
ii. If the z-score of a data point is 0, it ________________ 1
i. lies on the mean
ii. lies above the mean
iii. lies below the mean
iv. can be on either side of the mean
iii. The interquartile range can be calculated by subtracting 1
i. Third quartile from the First quartile
ii. First quartile from the Third quartile
iii. Second quartile from the Fourth quartile
iv. First quartile from the Second quartile
iv. Data collection design must acknowledge _______________ in the dataset. 1
i. continuity
ii. discreetness
iii. variability
iv. scalability

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 v. A discrete probability distribution may be represented by 1
i. a table
ii. a graph
iii. a mathematical equation
iv. all of the mentioned
vi. The pth percentile of a distribution is such that 1
i. p percent of the observations fall at it
ii. p percent of the observations fall below it
iii. p percent of the observations fall at or below it
iv. the value is p.

Q. 5 Answer any 5 out of the given 6 questions (1 x 5 = 5 marks)

i. The distribution of heights of Indian women aged 18 to 24 is approximately normally 1
distributed with a mean of 65.5 inches and standard deviation of 2.5 inches. Calculate the
z-score for a woman six feet tall.
i. 2.60
ii. 4.11
iii. 1.04
iv. 1.33
ii. In a manufacturing company, the number of employees in unit A is 40, the mean is Rs. 1
6400 and the number of employees in unit B is 30 with the mean of Rs. 5500 then the
combined arithmetic mean is
i. 9500
ii. 8000
iii. 7014.29
iv. 6014.29
iii. The mean deviation for the following data 1
5, 6, 7, 8, 6, 9, 13, 12, 15
is
i. 1.5
ii. 3.2
iii. 2.89
iv. 5
iv. If a card is chosen from a standard deck of cards, what is the probability of getting a five or 1
a seven?
i. 4/52
ii. 1/26
iii. 8/52
iv. 1/169
v. What is the probability that a ball is drawn at random from a jar? 1
i. 0.2
ii. 1
iii. 0
iv. Can not be determined from the given information
vi. Which of the following is not a correct statement about a probability? 1
i. It must have a value between 0 and 1
ii. It can be reported as a decimal or a fraction
iii. A value near 0 means that the event is not likely to occur/happen
iv. It is the collection of several experiments

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 SECTION B: SUBJECTIVE TYPE QUESTIONS

Answer any 3 out of the given 5 questions on Employability Skills (2 x 3 = 6 marks)

Answer each question in 20 – 30 words.
Q. 6 Define any two of the following 2
a. Self-Management.
b. Adaptability
c. Time Management
Q. 7 Mention one quality of a Self – Motivated person with an example. 2
Q. 8 Describe in brief the way one can prevent threats to computer. 2
Q. 9 Write the difference between Needs, Wants and Demands. 2
Q. 10 How is an entrepreneur and a society interrelated? 2

Answer any 4 out of the given 6 questions in 20 – 30 words each (2 x 4 = 8 marks)

Q. 11 List 3 real-life applications of Standard Deviation 2
Q. 12 What is discrete and continuous data? 2
Q. 13 Explain selection bias. 2
Q. 14 What is data merging? 2
Q. 15 What are various techniques of safely discarding digital confidential data? 2
Q. 16 Why is z-score important? 2

Answer any 3 out of the given 5 questions in 50– 80 words each (4 x 3 = 12 marks)
Q. 17 Explain the different ways of subsetting data. 4
Q. 18 Explain what is the Statistical Problem Solving Process. 4
Q. 19 What is the central limit theorem? Give two practical applications of this theorem. 4
Q. 20 Explain percentile, quartiles, and deciles, with examples. 4
Q. 21 Explain principles on ethics that one should follow while performing data analysis. 4

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