Section 30 in The Bihar Civil Service (Executive Branch) and the Bihar Junior Civil Service (Recruitment) Rules, 1951
30. Statistics. - Elementary ideas of probability including Baye's hypothesis, expected values, Lagran's and advancing interpolation formulae, derivation of normal cure and some of its fundamental properties. Elementary Theory of Least Square.
Descriptive Statistics. - Tabulation, classification, graphical representation averages (including index numbers in some details), dispersion, symmetry Kurtosis, elementary theory of Attributes and Association, Distribution, function of mean and variance in a normal population, elementary properties of some standard distributions, e.g., Binomial, rectangular Conchy's Personian, Derivations of x2 distribution from independent normal variates. Properties of Bivariate normal distributions. Theory of co-relation co-efficient including Personians co-efficient, rank and inter-class correlation co-efficients, with two and three variables only. Concepts of sampling in statistics (including random, purposive and stratified), elementary tests of hypothesis involving the use of t, F x2 distribution without formal proofs, elementary idea of analysis of variance and covariance (one way and two way classifications).Note. - The accounts of Executors and Trustees of the Estates of deceased person, Liquidators, Receivers, Official Assignee, etc. will not be included.
