Section 31 in The Jharkhand Civil Service (Executive Branch) & Jharkhand Junior Civil Services (Recruitment) Rules, 2001
31. Statistics. - Elementary ideas. If probability including Baye's hypothesis, expected values, Lagrang's and advancing interpolation formulate, derivation of normal curve and some of its fundamental properties. Elementary Theory of Least Square.
Descriptive statistics. - Tabulation, classification, graphical representation, average (including index numbers in some details), dispersion, symmetry, Kurtesis, elementary theory of Attributes and Association, distribution, function of mean and variance in a normal population, elementary properties of some standard distribution, e.g. Bionomial, ractangular Conchy's Pearsonion, Derivations of X2 distribution from independent normal variates. Properties of Bivariate normal distribution. Theory of relation co-efficient, rank and intra-class correlation coefficients, with two and three variables only, Concepts of sampling in statistics (including random, purposive and stratified), elementary tests hypothesis involving the use of I, F, X distribution without formal proofs, elementary idea of analysis of variance and covariance (one way and two way classifications).
