Odds in probability of a particular event, means the ratio between the number of favourable outcomes to the number of unfavourable outcomes. In gambling, the odds are the ratio of payoff to stake and do not necessarily reflect exactly the probabilities.

A one-to-one data display shows one icon or picture on the graph for each item.

The one-to-one principle involves producing the number words and matching them one-to-one to objects as they are counted.

The order of magnitude of a number is the smallest power of 10 required to represent the number.

An outlier is a data value that appears to stand out from the other members of the data set by being unusually high or low. The most effective way of identifying outliers in a data set is to graph the data.