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SUMMARIZING DISTRIBUTION

DISTRIBUTION

ASPECTS

WHERE IS YOUR HALF

HOW SPREAD IS IT

CENTRAL TENDENCY

MEASURES

THE MEAN

THE MEDIAN

THE MODE

DEFINITIONS

THE POINT AT WHICH A DISTRIBUTION WOULD BALANCE

THE VALUE WHOSE AVERAGE ADSOLUTE DEVIATION OF ALL OTHER VALUES ARE MINIMIZED

THE VALUE WHOSE SQUARE DIFFERENCE WITH ALL OTHER VALUES IS MINIMIZED

is the point at which a distribution would balance

IS

is

is the value that minimizes the sum of the squared deviations

is the value that minimizes the sum of the absolute deviations

when

The distribution is symmetrical, the mean and the median are equal.

other less used trends

The trimean

The geometric mean

The trimmend mean

is

is

is

weighted average

suitable for calculating variables in percentage or indices.

avoid the distortion that uncompensated extreme scores cause to the Arithmetic Mean