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.
Forecasting a global recession. IT IS rare for economists, particularly those at an investment bank, to forecast a recession. For a start, it is difficult to get it right; a recession is by definition a change in trend and economists tend to extrapolate from past ones. But secondly, it is a career risk. One economist once told Buttonwood that, âI never forecast a recession.