Maths Class 11 Chapter 15. Statistics | Page 2

Statistics
Statistics is the science of average & estimates . It is the study of collection , analysis , interpretation & Organization of data for specific purpose . We take decision with that data .
Data : Everyday , we come across a wide variety of information in the form of facts , numerical figure , table groups etc . Eg : Information related to profit / loss of a company , average cricket score for a country , Government expenditure in various sector in a given year , election results , Disease vitality information , Movie collection etc . This information is generally provided by TV , magazine , radio , internet etc . These facts or figure which is numerical or otherwise , collected with a definite purpose is called data . This word is derived by Latin word Datum
Usage of statistics : Demography data Sales trends Un-employement ratio Data for business decision Experimental data