International Journal of Economics, Commerce and Management, United Kingdom
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nation with regard to finance, education, public health, and agriculture, etc. that are indicators of
better life of human beings. Modern applied research based on better living management is
complex, requiring with a multiple set of skills such as medical, social, technological,
mathematical, statistical etc. in the advance research with the help of suitable statistical tools
and sampling research designs provide the unbiased estimates of the indicators, conclusions
and their interpretations based on good samples with appropriate sample size. The present
report emphasized the significance of sampling and determination of sample size in statistical
research. The most common methods for sample size determination employed in recent
statistical studies based on normal distribution, confidence interval (risk of error in the statistical
hypothesis testing) and permissible error in the estimate. An investigator or researcher can
calculate the appropriate sample size according to design of study mentioned above and
measures the result. Attention to sample size will hopefully result in a more meaningful study
whose results and interpretation will eventually receive a high priority for publication.
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