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formula for sample size determination in comparative studies. Entering the values in the formula yields. So to increase accuracy we simply need to increase the sample size.
Power Analysis For Two Group Independent Sample T Test R Data Analysis Examples from stats.idre.ucla.edu
SBP as a binary outcome For a study with a binary outcome calculating the required sample size is slightly more complicated. In literature the are many formulas and calculators available to calculate sample size and the researcher is confused about which formula to use. As such the determination of the appropriate sample size is one of the recurrent problems in statistical analysis.
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E margin of error. The formula for SE p has the square root of n the sample size in the denominator. Practical guide to social science research methodology. Therefore our sample size is 207 low income earners that will be drawn randomly from Abakaliki metropolises.
