Randomization is the process of making something random; in various contexts this involves, for example: generating a random permutation of a sequence (such as when shuffling cards); selecting a random sample of a population (important in statistical sampling); allocating experimental units via random assignment to a treatment or control condition; generating random numbers (see Random number generation); or transforming a data stream (such as when using a scrambler in telecommunications).Randomization is not haphazard.