UPSC CS Main 2020 Statistics Paper II Question Paper PDF

Central Government Jobs Other Jobs 2020

  • Year 2020
  • Conducted By UPSC
  • Questions 8
  • Maximum Marks 250
  • Duration Three Hours
  • Languages Hindi & English

Exam Details

Detail Information
Examination CS (Main) Exam
Year 2020
Conducting Body UPSC
Paper Statistics Paper - II
Subject Statistics
Duration Three Hours
Maximum Marks 250
Number of Questions 8
Question Type Mixed

This is the Statistics Paper II for the UPSC CS (Main) Exam held in 2020. The paper allows three hours to complete and is worth a maximum of 250 marks. It consists of eight questions divided into two sections, with questions presented in both Hindi and English. Candidates are required to answer a total of five questions, including compulsory questions 1 and 5, and at least one from each section. This paper is a vital resource for aspirants preparing for the CS (Main) examination, offering insights into the types of questions, marking scheme, and subject coverage.

Major Topics Covered

  • Reliability of a system
  • Game theory
  • Linear Programming Problem (LPP)
  • Duality in LPP
  • Markov chains
  • Transition probability matrix
  • Market share analysis

Why This Paper is Important

  • Useful for CS (Main) Exam preparation
  • Helps understand the latest exam pattern
  • Useful for practice and self-assessment
  • Covers frequently asked General Studies topics
  • Helpful for analysing question trends

Related Resources

  • UPSC CS (Main) Exam 2020 Statistics Paper I
  • UPSC CS (Main) Exam 2019 Statistics Paper II
  • UPSC CS (Main) Exam 2020 General Studies Paper I
  • UPSC CS (Main) Exam 2020 General Studies Paper II
  • UPSC CS Main 2020 Statistics Paper II Answer Key
  • UPSC CS Main Statistics Syllabus
  • UPSC CS Main Exam Pattern
  • UPSC CS Main Exam Pattern

Instructions

  • इसमें आठ प्रश्न हैं जो दो खण्डों में विभाजित हैं तथा हिन्दी और अंग्रेजी दोनों में छपे हैं।
  • उम्मीदवार को कुल पाँच प्रश्नों के उत्तर देने हैं।
  • प्रश्न संख्या 1 और 5 अनिवार्य हैं तथा बाकी प्रश्नों में से प्रत्येक खण्ड से कम-से-कम एक प्रश्न चुनकर तीन प्रश्नों के उत्तर दीजिए।
  • प्रत्येक प्रश्न/भाग के लिए नियत अंक उसके सामने दिए गए हैं।
  • प्रश्नों के उत्तर उसी प्राधिकृत माध्यम में लिखे जाने चाहिए, जिसका उल्लेख आपके प्रवेश-पत्र में किया गया है, और इस माध्यम का स्पष्ट उल्लेख प्रश्न-सह-उत्तर (क्यू० सी० ए०) पुस्तिका के मुखपृष्ठ पर निर्दिष्ट स्थान पर किया जाना चाहिए।
  • प्राधिकृत माध्यम के अतिरिक्त अन्य किसी माध्यम में लिखे गए उत्तर पर कोई अंक नहीं मिलेंगे।
  • किसी प्रश्न का उत्तर देने के लिए जहाँ जरूरत हो, आँकड़े मान लीजिए तथा उसको स्पष्ट रूप से सूचित कीजिए।
  • चार्ट/चित्र, जहाँ आवश्यक हो, प्रश्न के उत्तर देने की जगह पर ही अंकित किए जाएँ।
  • प्रश्नों के उत्तरों की गणना क्रमानुसार की जाएगी।
  • यदि काटा नहीं हो, तो प्रश्न के उत्तर की गणना की जाएगी चाहे वह उत्तर अंशतः दिया गया हो।
  • प्रश्न-सह-उत्तर पुस्तिका में खाली छोड़ा हुआ पृष्ठ या उसके अंश को स्पष्ट रूप से काटा जाना चाहिए।

  • There are EIGHT questions divided in two Sections and printed both in HINDI and in ENGLISH.
  • Candidate has to attempt FIVE questions in all.
  • Question Nos. 1 and 5 are compulsory and out of the remaining, THREE are to be attempted choosing at least ONE question from each Section.
  • The number of marks carried by a question/part is indicated against it.
  • Answers must be written in the medium authorized in the Admission Certificate which must be stated clearly on the cover of this Question-cum-Answer (QCA) Booklet in the space provided.
  • No marks will be given for answers written in a medium other than the authorized one.
  • Wherever any assumptions are made for answering a question, they must be clearly indicated.
  • Charts/figures, wherever required, shall be drawn in the space provided for answering the question itself.
  • Attempts of questions shall be counted in sequential order.
  • Unless struck off, attempt of a question shall be counted even if attempted partly.
  • Any page or portion of the page left blank in the Question-cum-Answer Booklet must be clearly struck off.

Questions (page 2)

Section A

Q1.

(a) किसी तंत्र की विश्वसनीयता को एक उदाहरण सहित परिभाषित कीजिए, साथ ही इसको प्रभावित करने वाले मापदण्डों की व्याख्या कीजिए।
Define reliability of a system with an example along with the criteria affecting it.

(b) खेल सिद्धान्त की विशेषताओं पर एक टिप्पणी लिखिए तथा इसकी सीमाओं का वर्णन कीजिए।
Write a note on the characteristics of game theory and discuss its limitations.

(c) रैखिक प्रोग्रामन समस्या में द्वैत की संकल्पना को परिभाषित कीजिए। निम्नलिखित रैखिक प्रोग्रामन समस्या का द्वैत लिखिए :
अधिकतमीकरण Z = 2x1 + 5x2 + 6x3
निम्न प्रतिबन्धों के अंतर्गत
5x1 + 6x2 - x3 leq 3
-2x1 + x2 + 4x3 leq 4
x1 - 5x2 + 3x3 leq 1
-3x1 - 3x2 + 7x3 leq 6
x1, x2, x3 ge 0
Define the concept of duality in Linear Programming Problem (LPP). Write down the dual of the following LPP :
Maximize Z = 2x1 + 5x2 + 6x3
subject to the constraints
5x1 + 6x2 - x3 leq 3
-2x1 + x2 + 4x3 leq 4
x1 - 5x2 + 3x3 leq 1
-3x1 - 3x2 + 7x3 leq 6
x1, x2, x3 ge 0

(d) मारकोव शृंखला तथा संक्रमण प्रायिकता आव्यूह का एक उदाहरण के साथ वर्णन कीजिए। निम्नलिखित संक्रमण प्रायिकता आव्यूह में A और B ब्रैन्ड के बाजार-अंश, समय 0 से 1 के लिए, ज्ञात कीजिए, जब उनका प्रारम्भिक बाजार-अंश ब्रेकडाउन 50% है:
तक
से
A
B
0. 9
0. 1
0. 5
Describe Markov chain and transition probability matrix with an example. In the following transition probability matrix, find the market shares of brands A and B for time 0 to 1, when their initial market share breakdown is 50%:
To
From

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Frequently asked questions

What is the name of the exam?

The exam is the CS (Main) Exam.

Which paper is this question paper for?

This is for Statistics Paper - II.

What is the conducting body?

The conducting body is UPSC.

In which year was this exam conducted?

The exam was conducted in 2020.

What is the maximum marks for this paper?

The maximum marks for Statistics Paper - II is 250.

What is the time allowed to complete the paper?

The time allowed is Three Hours.

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