The number of units (persons, animals, patients, specified circumstances, etc.) in a population to be studied. The sample size should be big enough to have a high likelihood of detecting a true difference between two groups. (From Wassertheil-Smoller, biostatistics and epidemiology, 1990, p95)


This is a full <b>sample size</b>,

This is a full sample size,

Calculating <b>Sample Size</b> -

Calculating Sample Size -

A <b>Sample Size</b> of One

A Sample Size of One

Definiting a <b>sample size</b> for

Definiting a sample size for

right <b>sample size</b> for your

right sample size for your

set a <b>sample size</b> level of

set a sample size level of

Many confuse <b>sample size</b> with

Many confuse sample size with

Does Your <b>Sample Size</b> Matter?

Does Your Sample Size Matter?

Symptoms and diagnosis



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