IES ISS 2020 Statistics Paper IV Question Paper PDF | UPSC

Central Government Jobs Other Jobs 2020

  • Year 2020
  • Conducted By UPSC
  • Maximum Marks 200
  • Duration Three Hours
  • Languages English

Exam Details

Detail Information
Examination Indian Economic Service - Indian Statistical Service Examination
Year 2020
Conducting Body UPSC
Paper Statistics Paper-IV
Subject Statistics
Duration Three Hours
Maximum Marks 200
Question Type Mixed

This document contains the question paper for the Indian Economic Service - Indian Statistical Service Examination 2020, specifically Statistics Paper IV. Conducted by UPSC, this paper carries a maximum of 200 marks and allows three hours for completion. It is designed for candidates aspiring to join prestigious services through competitive examination. The paper includes a mix of objective and descriptive questions covering Operations Research and Reliability, among other statistical topics. Aspirants can use this paper to understand the exam pattern, difficulty level, and key areas of focus for their preparation. Reviewing previous years' papers like this one is crucial for effective exam strategy.

Major Topics Covered

  • Operations Research
  • Reliability
  • Dynamic Programming
  • Optimization
  • Game Theory
  • Queueing Theory
  • Simplex Procedure
  • Bellman's Optimality Criteria

Why This Paper is Important

  • Useful for Indian Economic Service - Indian Statist 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

  • IES ISS 2021 Statistics Paper IV
  • IES ISS 2019 Statistics Paper IV
  • IES ISS 2020 Statistics Paper III
  • IES ISS 2020 General English Paper
  • IES ISS 2020 Statistics Paper IV Answer Key
  • UPSC Statistics Paper Answer Key
  • IES ISS Syllabus
  • UPSC Statistics Syllabus

Instructions

  • There are FOURTEEN questions divided under SEVEN Sections.
  • Candidate has to choose any TWO Sections and attempt the questions therein.
  • The number of marks carried by a question/part is indicated against it.
  • Wherever any assumptions are made for answering a question, they must be clearly indicated.
  • Diagrams/Figures, wherever required, shall be drawn in the space provided for answering the question itself.
  • Unless otherwise mentioned, symbols and notations have their usual standard meanings.
  • 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 (QCA) Booklet must be clearly struck off.
  • Answers must be written in ENGLISH only.

Questions (page 2)

Section A

Q1.

(a) subject to 3x1 + 4x2 ≤ 6 x1 + 3x2 ≥ 2 x1, x2 ≥ 0 using Simplex procedure.

(i) Describe dynamic programming problem and discuss its applications.

(b) (ii) State Bellman's optimality criteria. (iii) Minimize Z = y12 + y22 + y32 subject to y1 + y2 + y3 ≥ 18 y1, y2, y3 ≥ 0 For two players A and B, the payoff matrix is given below :

(c) Player B B2 B3 B4 B\rm 5 B1 3 \overline4 8 4 \mathbf2 A1 (A2)/(A3) 6 \boldsymbol7 5 3 8 Player A 8 б \overline7 9 7 3 4 2 8 4 A4 Using dominance property, find the value of the game and optimal strategies of the players. Check whether strategies adopted by player A are mixed or pure. There are three dentists in a dental clinic. On an average, it takes minutes

(d) on one patient and service times follow exponential distribution. Patients arrive according to Poisson process with mean 6/hour and queue discipline followed is FIFO (FCFS). Calculate the following:

(i) Expected number of patients in the queue (ii) Expected amount of time spent by a patient in the clinic (iii) Percentage of idle time of any dentist (iv) Probability that all dentists are busy 10 2 DFSE-F-STT/6

Question paper preview

Scanned pages 1–2 for reference. Download the official PDF for the full paper.

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UPSC IES ISS 2020 Statistics Paper IV question paper page 1 scan, showing exam header and specific instructions for candidates. PDF download available.
Page 2
UPSC IES ISS 2020 Statistics Paper IV question paper page 1 scan, showing exam header and specific instructions for candidates. PDF download available.

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Frequently asked questions

What is the name of the examination?

The examination is the Indian Economic Service - Indian Statistical Service Examination.

Which paper is this question paper for?

This is Statistics Paper-IV.

What is the conducting body for this examination?

The examination is conducted by UPSC (Union Public Service Commission).

In which year was this examination held?

This examination was held in the year 2020.

What is the maximum marks for this paper?

The maximum marks for this paper are 200.

What is the time duration allowed for this paper?

The time allowed for this paper is Three Hours.

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