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.
Prediction - Prediction in science. 1  In science, a prediction is a rigorous, often quantitative, statement, forecasting what would happen under specific conditions; for example, if an apple fell from a tree it would be attracted towards the center of the earth by gravity with a specified and constant acceleration.