Stochastic Processes 235 Calculus 215 Mathematical Statistics 207 Computer 194 Inference 171 Probability and Statistics 140 Operations research 98 Probability Theory 93 Multivariate Analysis 80 Design of Experiments 66 Mathematics 60 Dictionary,Encyclopedia,Handbook etc 51 Econometrics 50 Algebra 38 mathematics 34 Complex Analysis 32 Sampling 28 Sampling Theory 24 Biostatistics 22 quality control 22 Astronomy 17 Demography 16 Mathematical statistics 15 Topology 14 Linear Algebra 10 Statistics 7 Data processing 6 Mathematical models 5 Statistical methods 5 Data mining 4