CAPM (Certified Associate in Project Management) Practice Exam

Disable ads (and more) with a membership for a one time $2.99 payment

Prepare for the CAPM Exam with challenging questions and comprehensive explanations. Utilize flashcards and multiple choice quizzes to enhance your project management knowledge. Ace your exam with confidence!

Each practice test/flash card set has 50 randomly selected questions from a bank of over 500. You'll get a new set of questions each time!

Practice this question and more.


How is the mean calculated for a beta distribution?

  1. (O + ML + P) / 3

  2. (O + 4ML + P) / 6

  3. (2O + ML + 2P) / 5

  4. (O + 2ML + P) / 4

The correct answer is: (O + 4ML + P) / 6

The mean of a beta distribution is calculated using the formula (O + 4ML + P) / 6. This formula considers the three parameters of the beta distribution: O (the lower bound parameter), ML (the most likely parameter), and P (the upper bound parameter). By averaging these values with the specified weights (4 for ML and 1 each for O and P) and dividing by the total weight of 6, we obtain the mean value of the beta distribution. This formula accurately captures the weighted average of the parameters, making option B the correct answer. Option A, (O + ML + P) / 3, does not give the correct weights to the parameters of the beta distribution. Option C, (2O + ML + 2P) / 5, assigns unequal weights to the parameters which does not align with how the mean of the beta distribution is calculated. Option D, (O + 2ML + P) / 4, also does not correctly assign the weights to the parameters of the beta distribution.