Indian Forest Service Statistics Paper I 2023 Question Paper PDF
- Year 2023
- Conducted By UPSC
- Questions 8
- Maximum Marks 200
- Duration Three Hours
- Languages English
Exam Details
| Detail | Information |
|---|---|
| Examination | Indian Forest Service (Main) Examination |
| Year | 2023 |
| Conducting Body | UPSC |
| Paper | Statistics Paper - I |
| Subject | Statistics |
| Duration | Three Hours |
| Maximum Marks | 200 |
| Number of Questions | 8 |
| Question Type | Mixed |
This is the Statistics Paper I from the Indian Forest Service (Main) Examination held in 2023, conducted by UPSC. The paper contains a total of 8 questions, with 5 compulsory questions and a choice among the remaining. This paper is crucial for aspirants preparing for the Statistics subject in the IFS Main exam, offering insights into the types of questions asked and marking scheme. Practicing with this paper helps in understanding the exam pattern and difficulty level.
Major Topics Covered
- Probability
- Random Variables
- Probability Density Function
- Cumulative Distribution Function
- Unbiased Estimator
- Population Parameter
- Ancillary Statistics
- Binomial Distribution
- Consistent Estimator
- Normal Distribution
- Uniformly Most Powerful Test
- Hypothesis Testing
Why This Paper is Important
- Useful for Indian Forest Service (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
- Indian Forest Service (Main) Examination 2023 Statistics Paper II
- Indian Forest Service (Main) Examination 2022 Statistics Paper I
- Civil Services Examination 2023 Statistics Optional Paper I
- Indian Forest Service (Main) Examination 2023 Statistics Paper I Answer Key
- Indian Forest Service Statistics Syllabus
- UPSC Main Exam Statistics Syllabus
- Indian Forest Service Main Exam Pattern
- UPSC Exam Pattern for IFS Main
Instructions
- There are EIGHT questions in all, out of which FIVE are to be attempted.
- Out of the remaining SIX questions, THREE are to be attempted selecting at least ONE question from each of the two Sections A and B.
- 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.
- The number of marks carried by a question/part is indicated against it.
- Unless otherwise mentioned, symbols and notations have their usual standard meanings.
- Assume suitable data, if necessary and indicate the same clearly.
- Answers must be written in ENGLISH only.
Questions (page 2)
Q1.
(a) 5 white and 3 black balls. One ball is chosen at random from urn U and transferred to urn V. If two balls are chosen without replacement from V, what is the probability that they are of the same colour?
Q2.
3 The incidence of occupational disease in an industry is such that (d) (i) the workers have a 20% chance of suffering from it. What is the probability that out of six workers, five or six will catch the disease?
4 Suppose X1, X2, ... are independent and identically distributed (ii) random variables from B(1, p). Find a consistent estimator of p.
4 Let X1, ..., Xn be independent N(μ, σ^2) random variables with known σ^ (e) Using Monotone Likelihood Ratio Approach, find a Uniformly Most Powerful (UMP) test for testing H0: μ = μ_0 versus H1: μ > μ_
Q5. (Tables are provided.) 8 BJKE-U-STSC \overline\mathbf2
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Frequently asked questions
What is the name of the exam?
The exam is the Indian Forest Service (Main) Examination.
Which year is this question paper from?
This question paper is from the 2023 examination.
Who conducts the Indian Forest Service Examination?
The Indian Forest Service Examination is conducted by UPSC.
What is the subject of this paper?
This paper is Statistics Paper - I.
How many questions are there in total?
There are 8 questions in total.
How many questions need to be attempted?
Five questions need to be attempted. Questions 1 and 5 are compulsory, and at least one question from each of the two sections (A and B) must be selected from the remaining six.