Sample Method: Suitability, Merits, Demerits - Qualities of Good Sample | Collection of Data
Learning Outcomes:-
Through this
module, you will gain understanding on:-
1. SAMPLE Method - Suitability, Merits,
Demerits
2. Essential Qualities of a Good Sample
SAMPLE Method-
● Data is collected about the sample on a group of items taken from the population for examination and conclusions are drawn on their basis
○ Covering only a sample (a part) of the universe
○ Characteristics of the sample are supposed to represent characteristics of the entire universe
Suitability (Sample Method)-
● Very large population size
● High accuracy not needed
● Intensive examination of diverse items is not required
● Units of the universe are broadly similar to each other
Merits (Sample Method)-
● Economical - Only some units of population are studied
● Process of Investigation is time saving as only limited number of items are investigated
● Better accuracy, errors can be easily identified because only a limited number of items are covered
● More feasible in large investigation
● Administrative convenience as more capable and efficient investigators can be appointed in handling a limited number of items
Demerits (Sample Method)-
● Only a partial investigation of the universe
● results may be Biased due to investigator’s bias in the selection of sample items
● Chance of wrong conclusions if selected sample does not represent the characteristics of the universe
● Not very easy to select a representative sample, Specialized knowledge of Technical procedures is required for choosing a representative sample
● It becomes difficult to frame a sample when universe is so much diverse
Essential Qualities of a Good Sample-
● Representative - Must represent all the characteristics of the universe - Each unit of the universe stands equal chances of being selected in the sample
● Independent units of sample - Inclusion of one item in the sample should not be dependent upon the inclusion of some other items of the universe
● Homogeneity in sampling - If more than one sample are selected from a universe, they should not be contradictory to each other
● Adequate sample size - To draw reliable conclusions, the number of items in the sample should be fairly adequate covering characteristics of the universe as a whole
Sample Method: Suitability, Merits, Demerits - Essential Qualities of Good Sample | Collection of Data | 11th Commerce | by @statomics11comm
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