Definition: The value that occurs most often. If no value is repeated, there is no mode. If more than one value occurs with the same greatest frequency, each value is a mode.

See also median, mean, midrange.

Note: The mode of 1, 1, 3, 50, and 60 is 1 since it occurs twice and all the other values occur once. The numbers 1, 1, 2, 3, 3, and 4 have two modes, 1 and 3, and is called bimodal. If there are more than two modes, it is multimodal.

Author: PEB

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Entry modified 26 July 2022.
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Cite this as:
Paul E. Black, "mode", in Dictionary of Algorithms and Data Structures [online], Paul E. Black, ed. 26 July 2022. (accessed TODAY) Available from: