10 - 1: Measures of Center

10 - 1: Measures of Center

Author: Kate Sidlo

Students will be able to define and calculate the three major measures of center: mean, median, and mode, as well as quartiles.

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Introduction to Psychology

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QUARTILE: The median of the upper and lower half of data; divides the data into groups of one-forth.

MEAN: The "average" of the numbers.  The sum of the terms divided by the number of terms.

MEDIAN: The middle term of a data set when put in order from least to greatest

MODE: The most common term in a data set.