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      Question

      Find the variance of the following data points: 6, 7, 5, 9, 12, 15

      A 37/6 Correct Answer Incorrect Answer
      B 67/6 Correct Answer Incorrect Answer
      C 81/3 Correct Answer Incorrect Answer
      D 37/3 Correct Answer Incorrect Answer

      Solution

      6, 7, 5, 9, 12, 15 Mean = (5+6+7+9+12+15)/6 =54/6=9 6, 7, 5, 9, 12, 15 Deviation=     3, 2, 4, 0, 3, 6 Variance = (9+4+16+0+9+36)/6 =74/6 =37/3.

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