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Sampling | Sampling (Statistics) | Sample Size Determination

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Sampling Techniques & Data Gathering Methods J.O.Gonzales Sampling  Sampling - process of selecting members or elements of a sample from a given population.  Requires     Time Effort Money Careful planning Slovin’s Formula   There are scientific ways of determining a representative (acceptable) sample size from any given population. One of them is Slovin’s formula: where N n= (1 + Ne 2 ) n = sample size N = population size e = margin of error (usually 0.05, since the preferre
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    Sampling Techniques &Data Gathering Methods J.O.Gonzales    Sampling    Sampling  - process of selecting membersor elements of a sample from a givenpopulation.  Requires  Time  Effort  Money  Careful planning    Slovin’s Formula    There are scientific ways of determining a representative(acceptable) sample size from any given population.  One of them is Slovin’s formula:where n = sample sizeN = population sizee = margin of error  (usually 0.05, since the preferred confidence levelin sampling is 95%) )1( 2  Ne N n +=    Sampling Techniques   1.Probability Sampling  – samples arechosen in such a way that each element of the population has a known and usuallyequal chance of being included in thesample. 2. Non-probability Sampling – samples arechosen in such a way that some membersof the population may not have any chanceof being included in the sample.
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