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With respect to calculating variance and standard deviation for a sample, What value will you get...

With respect to calculating variance and standard deviation for a sample,

  1. What value will you get when you sum the deviation scores (x – M)?
  2. What is typically done instead of just summing the deviation scores?
  3. If you are given the calculated variance for a distribution of scores in a sample, how would you convert this value to the standard deviation?
Math   Statistics-And-Probability   
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