Examlex
Why are lichens good barometers of the presence of air pollution?
Central Tendency
A statistical measure that identifies the center of a data set, often using the mean, median, or mode.
Variation
Differences or diversities in characteristics among individuals of a population, species, or between groups.
Standard Deviation
A measure of the amount of variation or dispersion of a set of values.
Mean Age
An arithmetic average age of all the individuals in a given group or sample.
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