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Earn +20 ptsQ: What is the sum of squared deviation?
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Is the variance of a group of scores the same as the squared standard deviation?
The standard deviation is defined as the square root of the variance, so the variance is the same as the squared standard deviation.
The standard deviation is the square root of the average squared deviation of scores from the?
mean
Does standard deviation and mean deviation measure dispersion the same?
No. The average of the deviations, or mean deviation, will always be zero. The standard deviation is the average squared deviation which is usually non-zero.
What will the sum of the deviation score always be?
zero
Suppose the standard deviation is 13.1 what is the variance?
13.1 squared = 3.62
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