Q: Can you have a negative number for percent deviation?

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Standard deviation can never be negative.

No. Neither the standard deviation nor the variance can ever be negative.

No. It is defined to be the positive square root of ((the sum squared deviation divided by (the number of observations less one))

to find percent deviation you divide the average deviation into the mean then multiply by 100% . to get the average deviation you must subtract the mean from a measured value.

If the percent of change is negative, then it is wrong.

Related questions

Percent deviation formula is very useful in determining how accurate the data collected by research really is. Percent Deviation = (student data-lab data) / lab data then multiplied by 100 Note: If the percent deviation is a negative number that means the student data is lower than the lab value.

No, average deviation cannot be negative. Deviation is a representation of differences between numbers. A difference is always an absolute value, so the number cannot be negative (even though subtracting the deviation from an average may result in a a negative result).

No. Standard deviation is the square root of a non-negative number (the variance) and as such has to be at least zero. Please see the related links for a definition of standard deviation and some examples.

Standard deviation can never be negative.

A negative deviation means that the observation is smaller than whatever it is that the deviation is being measured from.

No. Neither the standard deviation nor the variance can ever be negative.

No. It is defined to be the positive square root of ((the sum squared deviation divided by (the number of observations less one))

to find percent deviation you divide the average deviation into the mean then multiply by 100% . to get the average deviation you must subtract the mean from a measured value.

no it is not possible because you have to take the square of error that is (x-X)2. the square of any number is always positive----------Improved answer:It is not possible to have a negative standard deviation because:SD (standard deviation) is equal to the square of V (variance).

If the percent of change is negative, then it is wrong.

The mean would be negative, but standard deviation is always positive.

no