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Order the steps: compute a standard deviation

Exercise and reference answers

Steps
  1. Compute the mean of the observations
  2. Find each observation's deviation from the mean
  3. Square every deviation
  4. Average the squares to get the variance
  5. Take the square root to get the standard deviation

Explanation

Variance first, square root last. Source: syllabus Maths, Ch 13 Statistics.
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