In statistics, the grand mean, pooled mean, or grand average is the overall average of the values in a set of numbers, regardless of how they may be grouped. The adjective grand or pooled is used for emphasis, to distinguish it from any of the group means, the averages computed within a particular subset of values.
In statistics, the grand mean, pooled mean, or grand average is the overall average of the values in a set of numbers, regardless of how they may be grouped. The adjective grand or pooled is used for emphasis, to distinguish it from any of the group means, the averages computed within a particular subset of values.
Source: Wikipedia "Grand mean" · CC BY-SA 4.0
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