TLF ID M009161
This is a 19-page guide for teachers. This module continues the development of probability. A careful consideration of outcomes and equally likely outcomes is undertaken. In year 9, students consider situations involving two stages or two variables, including the special case of what are sometimes called two-step chance experiments. They have assigned probabilities based on assumptions or estimated probabilities from data. Probabilities of events involving 'and' or 'or' have been determined from assumptions or estimated from data.