Tercile vs. Quantile — What's the Difference?

Alternative form of tertile.

In statistics and probability, quantiles are cut points dividing the range of a probability distribution into continuous intervals with equal probabilities, or dividing the observations in a sample in the same way. There is one fewer quantile than the number of groups created.

Each of any set of values of a variate which divide a frequency distribution into equal groups, each containing the same fraction of the total population.

(statistics) One of the class of values of a variate which divides the members of a batch or sample into equal-sized subgroups of adjacent values or a probability distribution into distributions of equal probability.