The answer is Random Sample
It is a random sample.
random or blind
random sample is a big sample and convenience sample is small sample
In a stratified sample, the sampling proportion is the same for each stratum. In a random sample it should be but, due to randomness, need not be.
simple random sample is to select the sample in random method but systematic random sample is to select the sample in particular sequence (ie 1st 11th 21st 31st etc.)â€¢ Simple random sample requires that each individual is separately selected but systematic random sample does not selected separately.â€¢ In simple random sampling, for each k, each sample of size k has equal probability of being selected as a sample but it is not so in systematic random sampling.
to select a random sample you pick them at random
A random distribution is a random sample set displayed in the form of a bell curve. See random sample set.