Sample Size Calculation Of Cross Sectional Study
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Sample Size Calculation Of Cross Sectional Study. Sample size determination is the act used in research of selecting the number of observations to include in a statistical sample. If the prevalence is 50%, 'd' (20% of 'p') would then be 0.2*50= 10 (as compared to 'd' = 4 when 'p' = 20%).
Cross sectional studies or cross sectional survey are done to estimate a population parameter like prevalence of some disease in a community or finding the .
Determining sample size is a very important issue because samples that are too large may waste time, resources and money, while samples that are . The reverse is also true: Determining sample size is a very important issue because samples that are too large may waste time, resources and money, while samples that are . In the above example, if 'p' is 20%, then 'd' will be (20/100)*20= 0.2*20= 4 {taking a relative precision of 20%}.
