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    Best Books for SSC CGL Statistics

    Anil Tigga Anil Tigga
    University Data Specialist

    Statistics is one of the most important topics to be asked in SSC CGL examination. With a whole paper (Paper 3) being dedicated to the subject, Statistics is provisionally asked from the candidates who applied for Statistical Investigator. The questions in the subject range from moderate to high difficulty with standard of the questions being Secondary and Graduate.

    SSC CGL 2017 Notification is now released at the official website and candidates interested in the examination can apply till June 16. The mode of application is online only and no applications will be accepted post June 16. The exam will be conducted in four Tiers with each tier being qualifying in nature. We have listed important Books and preparation tips for Statistics and the topics involved in the subject.

    The recommended books for preparation of SSC CGL examination 2017 are

    • SSC combined Gradutae Level Guide

    By - R. Gupata's

    Publisher: Ramesh Publishing House

    • SSC Combined Graduate Level Examination           

    By - Sanjeev Joon

    Publisher - Tata McGraw Hill Education Private Limited

    • A Complete Guide for SSC: Graduate Level Examination   

    By - Sachchida Nand Jha

    Publisher: Upscportal Publications

    • SSC Combined Graduate Level Mains Exam with Solved & Practice Sets

    Compiled by Expert

    Publisher - Arihant

    • SSC Staff Selection Commission: Combined Graduate Level Previous Years' Papers With Practice Test Papers (Solved)   (Paperback)

    By - R. Gupta's

    Publisher - Ramesh Publishing House


    Statistics Pattern and Syllabus SSC CGL Tier II

    Tier-II exam of the CGL  i.e. Combined Graduate Level Examination -2017 will be Objective Type Multiple Choice and  will be conducted over a period of two days.

    Examination ModePaperSubjectMarksNo. of QuestionsTime for General candidatesTime for VH and PC candidates
    Computer basedIVGeneral Studies (Finance and Economics)200To be notified later.2 Hours2 Hours. and 40 Min.
    IIIStatistics2001002 Hours2 Hours and 40 Min.
    IIEnglish Language & Comprehension2001002 Hours2 Hours. and 40 Min.
    IQuantitative Abilities2002002 Hours2 Hours. and 40 Min

    Paper-III Statistics : For Statistics for Investigator Grade-II Post Only

    • Collection Classification and Presentation of Statistical Data
    • Primary and Secondary data
    • Methods of data collection
    • Tabulation of data
    • Graphs and charts
    • Frequency distributions
    • Diagrammatic presentation of frequency distributions.

    Measures of Central Tendency Important Topics and Preparation Tips

    Common measures of central tendency – the important topics are mean, median and mode

    Partition values- quartiles, deciles, percentiles.

    Tips for preparation:

    These are quantitative and needs lot of practice from different reference books. The more we practice  smarter we get. One should refer to the statistic as time is very short during exam so one should know all the formulas.

    Measures of Dispersion

    Common measures dispersion –  range, quartile deviations, mean deviation and standard deviation; Measures of relative dispersion.

    Moments, Skewness and Kurtosis – Different types of moments and their relationship; meaning of skewness and kurtosis; different measures of skewness and kurtosis.

    Tips for preparation

    • Solving previous years test papers
    • Taking tips from other candidates
    • Solving lot of test papers so that mind gets conditioned to quick thinking

    Correlation and Regression

    Scatter diagram; simple correlation coefficient; simple regression lines; Spearman’s rank correlation; Measures of association of attributes; Multiple regression; Multiple and partial correlation (For three variables only).

    Tip: practice and understanding topics.

    School math of level 10th to 12th is helpful in preparing for this section.

    Probability Theory

    Meaning of probability; Different definitions of probability; Conditional probability; Compound probability; Independent events; Bayes’ theorem.

    Tips: Probability relates to chance of something that’s why it can never be in negative.

    Practicing with dice, cards and coins is best way.

    Random Variable and Probability Distributions

    Random variable; Probability functions; Expectation and Variance of a random variable; Higher moments of a random variable; Binomial , Poisson, Normal and Exponential distributions; Joint distribution of two random variable (discrete).

    Tip:

    • Try to solve maximum tests given in practice guide
    • It is helpful to join preparatory classes for increasing your speed.

    Sampling Theory

    • The Concept of population and sample
    • Parameter and statistic
    • Sampling and non-sampling errors
    • Probability and non-probability sampling techniques (simple random sampling
    • Stratified sampling
    • Multistage, multiphase, cluster, systematic, purposive, convenience and quota sampling); distribution (statement only); Sample size decisions.

    Tip for preparation is to prioritize important topics related to theory

    Statistical Inference

     Point estimation and interval estimation, Properties of a good estimator, Methods of estimation (Moments method, Maximum likelihood 21 method, Least squares method), Testing of hypothesis, Basic concept of testing, Small sample and large sample tests, Tests based on Z, t, Chi-square and F statistic, Confidence intervals.

    Analysis of Variance

     Analysis of one-way classified data and two-way classified data.

    Tip:

    Practice the data comparisons

    Time Series Analysis

    Components of time series, Determinations of trend component by different methods, Measurement of seasonal variation by different methods.

    Tip:

    Practice from SSC CGL guide

    Index Numbers

    Meaning of Index Numbers, Problems in the construction of index numbers, Types of index number, Different formulae, Base shifting and splicing of index numbers, Cost of living Index Numbers, Uses of Index Numbers.

    Tip: Do not give random answer as there is negative marking. Trick is to first discard most irrelevant answers and concentrate on relevant ones.

    • Coaching classes help in learning tricks of cracking exam
    • Eat healthy and sleep in time during preparation time.

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