Sample size determination or estimation is the act of choosing the number of observations or replicates to include in a statistical sample. The sample...

Random-sampling mechanism Resampling (statistics) Pseudo-random number sampling Sample size determination Sampling (case studies) Sampling bias Sampling distribution...

Since the sample error can often be estimated beforehand as a function of the sample size, various methods of sample size determination are used to...

the sampling mean distribution obtained is equal to the variance of the population divided by the sample size. This is because as the sample size increases...

a sample is taken without knowing, in advance, how many observations will be acceptable according to some criterion. In such cases, the sample size N...

subgroups' sample sizes proportional to the amount of data available from the subgroups, rather than scaling sample sizes to subgroup sizes (or to their...

{\displaystyle c_{\rm {v}}\,} itself. For many practical purposes (such as sample size determination and calculation of confidence intervals) it is s l n {\displaystyle...

square root of the sample size, and is estimated by using the sample standard deviation divided by the square root of the sample size. For example, a poll's...

statistics, an effect size is a value measuring the strength of the relationship between two variables in a population, or a sample-based estimate of that...

number of interviews and costs given the desired accuracy. For a fixed sample size, the expected random error is smaller when most of the variation in the...