CAPM (Certified Associate in Project Management) Practice Exam

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What is the calculation method for project standard deviation in statistical sums?

  1. Sum of the project means

  2. Square root of the project mean

  3. Square root of the project variance

  4. Square of the project variance

The correct answer is: Square root of the project variance

The correct calculation method for project standard deviation in statistical sums is to take the square root of the project variance. This is because the standard deviation is a measure of the dispersion or spread of a set of data points, and it is calculated as the square root of the variance. Variance is the average of the squared differences from the mean, so taking the square root of the variance gives us the standard deviation, which is a more interpretable measure of dispersion. Therefore, option C is the correct answer. On the other hand: - Option A, sum of the project means, is not the correct calculation method for project standard deviation. - Option B, square root of the project mean, is not the correct calculation method for project standard deviation. - Option D, square of the project variance, is not the correct calculation method for project standard deviation.

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