Reliability of data: For the purposes of an evaluation, there should be at least three years of test data with adequate sample sizes and individual student data from previous years. (articles.latimes.com)
Adequate samples for influenza tests should be rapidly taken and processed from patients with relevant exposure history within 10 days preceding symptom onset. (sciencedaily.com)
... a statistically adequate sample of paintings executed by many painters living during a given period in a given region should reveal meteorological features significantly different from those of a similar sample of paintings produced during the same epoch in a climatically different region (drtimball.com)