ABSTRACT
Basically, statistics are classified as descriptive statistics and programmed statistics. Descriptive statistics include mean, median, mode, range, interquartile range, quartile
deviation, mean deviation, variances and standard deviation. Programmed statistics include operation research, χ2-test and decision theory. Operation Research includes the linear programming problem (LPP), cybernetics, organisation theorem, behavioural sciences, general system theory, logic, mathematics and statistics.
