Statistics is the science concerned with developing and studying methods for collecting, analyzing, interpreting and presenting empirical data. Statistics is a highly interdisciplinary field, statistics is used in almost all sciences. Any experiment, survey or research are made with specific objective, for every objective hypothesis are made and to justify, corresponding to every hypothesis a variable is determined on which data are collected and by applying appropriate statistical test conclusion is drawn about the hypothesis and hence justify the research. There are three main body parts of statistics
Probability and probability distribution
First part contains all descriptive statistics like mean, median, mode SD etc.
The second part contains probability theory and probability distributions, which contains discrete and continuous probability distributions.
The third part contains inferential statistics which contains estimation and testing of hypothesis.
In general statistics is applied in all sciences like marketing, production, agriculture, insurance, engineering, medical, clinical research etc.