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Earn +20 ptsQ: The sum of the deviations about the mean always equals what?
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The sum of the deviations from the mean is always?
0 (zero).
What is the sum of the deviations from the mean?
The sum of standard deviations from the mean is the error.
Which measure of central tendency will the sum of the deviations always be zero?
For which measure of central tendency will the sum of the deviations always be zero?
The sum of the deviations from the mean is always zero?
The definition of the mean x of a set of data is the sum of all the values divided by the total number of observations, and this value is in turn subtracted from each x value to calculate the deviations. When the deviations from the average are added up, the sum will always be zero because of the negative signs in the sum of deviations. Going back to the definition of the mean, the equation provided (x = Σxi/n) can be manipulated to read Σxi - x = 0
Which measure of central location will the sum of the deviations of each value from the data's average always be zero?
the mean
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