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Research Methodology - Questionnaire & Sampling

THE LAW OF STATISTICAL REGULARITY - STATISTICAL LAWS

   Posted On :  21.05.2018 12:24 am

The Law of Statistical Regularity is derived from the mathematical theory of probability.

THE LAW OF STATISTICAL REGULARITY
 
 
The Law of Statistical Regularity is derived from the mathematical theory of probability. According to W.I.King, “the Law of Statistical Regularity formulated in the mathematical theory of probability lays down that a moderately large number of items chosen at random from a very large group are almost sure to have the characteristics of the large group.” For example, if we want to find out the average income of 10,000 people, we take a sample of 100 people and find the average. Suppose another person takes another sample of 100 people from the same population and finds the average, the average income found out by both the persons will have the least difference. On the other hand if the average income of the same 10,000 people is found out by the census method, the result will be more or less the same.
 

Characteristics

 
1. The item selected will represent the universe and the result is generalized to universe as a whole.

2. Since sample size is large, it is representative of the universe.
 
3. There is a very remote chance of bias.
  
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