Explain steps to calculate standard deviation (6)

• Explain the steps to calculate standard deviation

  1. Calculate the Mean – Add all the scores together and divide by the number of scores to find the average (mean).
  2. Find the Deviations – Subtract the mean from each individual score to get the deviation for each value.
  3. Square Each Deviation – Square each deviation to remove negative values and give more weight to larger differences.
  4. Calculate the Variance – Add all the squared deviations together and divide by the number of values (or n - 1 for a sample) to find the variance.
  5. Find the Square Root – Take the square root of the variance to get the standard deviation.
  6. State the Final Value – The result is the standard deviation, which tells you how much the scores vary around the mean.