Features and functions of statitics
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This document provides an introduction to statistics, describing its nature and subject matter. It discusses two types of statistics: descriptive statistics, which describes and summarizes sample characteristics, and inferential statistics, which infers something about the population from the sample. Some key features of statistics mentioned are that it aggregates facts numerically expressed and affected by multiple causes, while functions of statistics include expressing facts numerically, simple presentation, comparison of facts, and helping formulate and test hypotheses.
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Features and functions of statitics
- 1. IntroductIon to statIstIcs MADE BY : BHUPINDER KAUR S.D.COLLEGE,AMBALA CANTT
- 4. two SortS of StatiSticS • Descriptive statistics – To describe and summarize the characteristics of the sample – Fall within the class of exploratory techniques • Inferential statistics – To infer something about the population from the sample – Lie within the class of confirmatory methods
- 5. Features oF statistics • Aggregate of facts • Numerically expressed • Affected by multiplicity of causes • Reasonable accuracy • Placed in relation to each other • Pre determined purpose • Enumerated or estimated • Collected in systematic manner
- 6. Functions oF statistics • Expression of facts in numbers example: there is lot of unemployment in India or population is increasing at a faster rate are not in a numerical form, it should in numerical terms like population in 2016 would be 15% more as compared to 2010. • Simple presentation • Enlarge individual knowledge and experiences
- 7. Contd. • Comparison of facts • Facilitates in policy formulation example : how much food is required to be imported in 2016? depends on the food production in 2016 and the demand for food in 2016. • Formulation and testing of hypothesis • Helps other sciences in testing their laws.
- 8. Contd. • Establishes relationship between facts • Helps in forecasting • Presentation of data in a condensed form • Reduce the complexity of data • Draw rational conclusions