By : Naveen Singh
Updated : Dec 3, 2020, 22:42
Statistics is one of the most important topics for students preparing for defense exams and similar competitive exams. It is included in the syllabus because it helps in gauging a candidate's potential in data collection, interpretation, presentation, employment of correct analysis in a way to present the result effectively. It basically generalizes the collected sample data to be understood by everyone. Statistics questions for defence exams are often tricky, and a student needs to solve them tactfully and quickly to score well.
Apart from the CDS, AFCAT, NDA, CAPF, and other defence exams, the Statistics is also included in the syllabus for other government and public sectors exams of such as SSC, Railways, LIC AAO, and banking exams like IBPS Clerk, PO, SBI Clerk, RBI Grade A, and B, PO, IBPS RRB Clerk, and PO. So statistics topic is something that you must not skip. Let us see some more aspects of this chapter in this article.
Statistics syllabus defence exams include the following topics:
Topic  Explanation 
Frequency Distributions and Graphing  Here, you will learn about the concept of the frequency distribution of data and different types of graphing, such as tabulation, bar graphs, pie charts, and line graphs. 
Rankings in a Distribution.  It is a way of job evaluation. 
Central Tendency.  You will learn about mean, mode, and median here. 
Variability  It determines the degree of spread of scores around the mean. 
Standard Scores.  It measures the number of how many standard deviations above or below a population's raw score is. 
Estimation and Sampling Distributions.  The sampling distribution is the probability distribution of statistics that is obtained from a sample drawn from a certain population. 
Probability  It is the numerical description of how frequently an event occurs. 
Here are some tips that you should flow for enhancing your skills in solving statistics problems in any competitive exam:
Here are some reasons why studying statistics is important:
Some books that can help you in preparing statistics for defence exams are as follows:
Books  Author 
Fundamental of Statistics  Gupta Sc 
Fast Track Objective Arithmetic  Rajesh Verma 
Fundamentals of Mathematical Statistics  S. Chand and Sons

Quantitative Aptitude for Competitive Examinations  RS Aggarwal 
With BYJU'S Exam Prep, you can learn the key concepts of statistics. It provides statistics study material pdf and statistics practice problems pdf so that you can come across statistics practice quizzes of varying difficulty levels. This makes you confident enough to face any type of questions in the competitive exams. BYJU'S Exam Prep further helps you learn various tricks so that you can apply them during the exam to solve questions as these are time savers and with consistent practice only, you will get a good hold on them.
1. Can I practice statistics questions online?
Yes, online sites like BYJU'S Exam Prep are mandatory while preparing for competitive exams because they provide the latest pattern that can be expected in the upcoming exams, in the form of sample and practice test sets.
2. How to attend the maximum number of questions from the statistics section?
You need to opt for the shorter and easier questions first, which consume less time. Then opt for the lengthier ones later, to increase the number of attempts.
3. Is it east to score in the statistics section?
Yes, but with sufficient practice, otherwise you will get confused during the exam.
4. Can statistics online tests help a candidate in defence exams?
Yes, because the online tests help a student know their his preparation level for the main exam.
5. Can I start preparation for the statistics section a few months before the exam?
No, this is because, even if you can get clarity on the concepts, you will lack time in practicing various types of problems, which will make you lose your confidence level in the main exam.