No. The square of a number is always positive, so the sum of
several of them must also be positive.
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Yes, a standard deviation can be less than one.
Why is 0.5 squared answer 0.25. Is the answer less than the question?
A value that is less than zero.A value that is less than zero.A value that is less than zero.A value that is less than zero.
Standard deviation in statistics refers to how much deviation there is from the average or mean value. Sample deviation refers to the data that was collected from a smaller pool than the population.
To find the standard deviation, you must first compute the mean for the data set. So the answer is yes. Just have a look at the 5 steps needed to compute a standard deviation and you will see why the answer is yes. In reality, people most often use calculators or computers to do this. However, it is good to understand what they are doing. 1. Compute the deviation by subtracting the mean from each value. 2. Square each individual deviation. 3. Add up the squared deviations. 4. Divide by one less than the sample size. 5. Take the square root