UPSC Civil Services Main 2023 Statistics Paper I PDF Download

Central Government Jobs Administrative / Civil Services 2023

  • Year 2023
  • Conducted By UPSC
  • Questions 8
  • Maximum Marks 250
  • Duration Three Hours
  • Languages English & Hindi

Exam Details

Detail Information
Examination CIVIL SERVICES (MAIN) EXAMINATION
Year 2023
Conducting Body UPSC
Paper STATISTICS Paper - I
Subject Statistics
Duration Three Hours
Maximum Marks 250
Number of Questions 8
Question Type Mixed

This is the Statistics Paper I for the UPSC Civil Services (Main) Examination held in 2023. Conducted by UPSC, this paper carries a maximum of 250 marks and is allocated a duration of three hours. The paper is designed to assess candidates' understanding of statistical concepts and their application. It consists of eight questions divided into two sections, with candidates required to answer five questions in total, including compulsory questions 1 and 5. This paper is crucial for aspirants aiming for administrative roles through the Civil Services examination.

Major Topics Covered

  • Statistics
  • Probability
  • Continuous Random Variables
  • Probability Density Function
  • Cumulative Distribution Function

Why This Paper is Important

  • Useful for CIVIL SERVICES (MAIN) EXAMINATION 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

  • CIVIL SERVICES (MAIN) EXAMINATION 2023 - General Studies Paper I
  • CIVIL SERVICES (MAIN) EXAMINATION 2023 - General Studies Paper II
  • CIVIL SERVICES (MAIN) EXAMINATION 2023 - General Studies Paper III
  • CIVIL SERVICES (MAIN) EXAMINATION 2023 - General Studies Paper IV
  • CIVIL SERVICES (MAIN) EXAMINATION 2023 - Optional Subject Paper I
  • CIVIL SERVICES (MAIN) EXAMINATION 2023 - Optional Subject Paper II
  • UPSC Civil Services Main 2023 Statistics Paper I Answer Key
  • UPSC Civil Services Main Statistics Syllabus

Instructions

  • पुस्तिका के मुख-पृष्ठ पर निर्दिष्ट स्थान पर किया जाना चाहिए ।
  • प्राधिकृत माध्यम के अतिरिक्त अन्य किसी माध्यम में लिखे गए उत्तर पर कोई अंक नहीं मिलेंगे ।
  • यदि आवश्यक हो, तो उपयुक्त आँकड़ों का चयन कीजिए तथा उनको निर्दिष्ट कीजिए ।
  • जब तक उल्लिखित न हो, संकेत तथा शब्दावली प्रचलित मानक अर्थों में प्रयुक्त हैं ।
  • 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 (क्यू.सी.ए.) 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.
  • Questions no. 1 and 5 are compulsory and out of the remaining, any 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.
  • Assume suitable data, if considered necessary, and indicate the same clearly.
  • Unless and otherwise indicated, symbols and notations carry 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.

Questions (page 2)

Section A

Q1.

(a) 1000 जन्म लेने वाले व्यक्तियों में से, केवल 900, 15 वर्ष तक की आयु तक पहुँच पाते हैं, तथा प्रति 1000 व्यक्ति जो 15 वर्ष की आयु तक पहुँचते हैं, उनमें से 950 व्यक्ति 50 वर्ष की आयु तक पहुँचते हैं । प्रति 1000 व्यक्तियों में जो 50 वर्ष की आयु तक पहुँचते हैं, उनमें से 40 व्यक्तियों की एक वर्ष में मृत्यु हो जाती है। तदनुसार एक व्यक्ति के 51 वर्ष की आयु तक पहुँचने की प्रायिकता क्या है ?
Out of 1000 persons born, only 900 reach the age of 15 years, and out of every 1000 who reach the age of 15 years, 950 reach the age of 50 years. Out of every 1000 who reach the age of 50 years, 40 die in one year. Accordingly, what is the probability that a person would attain the age of 51 years?

(b) माना X एक सतत यादृच्छिक चर है जिसका प्रायिकता घनत्व फलन है:
f(x) = egincases racx2, & 0 le x < 1 \ rac12, & 1 le x < 2 \ rac3-x2, & 2 le x < 3 \ 0, & extअन्यथा endcases
X का संचयी वितरण फलन निकालिए तथा इससे P(X > rac32) का मान ज्ञात कीजिए ।
Let X be a continuous random variable with probability density function :
f(x) = egincases racx2, & 0 le x < 1 \ rac12, & 1 le x < 2 \ rac3-x2, & 2 le x < 3 \ 0, & extelsewhere endcases
Obtain the cumulative distribution function of X and hence find the value of P(X > rac32).

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Frequently asked questions

What is the name of the exam for which this paper was conducted?

This paper is from the CIVIL SERVICES (MAIN) EXAMINATION.

Which year is this question paper from?

This question paper is from the year 2023.

Who conducts the Civil Services Main Examination?

The Civil Services Main Examination is conducted by UPSC (Union Public Service Commission).

What is the subject of this paper?

The subject of this paper is Statistics.

What is the paper code mentioned on the question paper?

The paper code mentioned is SKYC-U-STSC.

What is the maximum marks for this paper?

The maximum marks for this paper are 250.

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