This is no longer simple random sampling, because some combinations of 100 students have a larger selection probability than others â for instance, {3, 13, 23, ..., 993} has a 1/10 chance of selection, while {1, 2, 3, ..., 100} cannot be selected under this method.
Definition of 'weather forecast'. weather forecast. A weather forecast is a statement saying what the weather will be like the next day or for the next few days.
To estimate or predict in advance, especially to predict (weather conditions) by analysis of meteorological data. See Synonyms at predict. 2. To serve as an advance indication of; foreshadow: price increases that forecast inflation.