Hi Tim, One more question for you: In one of your projects, a team member, John, informs you that he works on user interface development, which is a very creative activity. He cannot estimate the time required to complete the activity. However, as a Project Manager, you need the activity's estimates. You decide to use the past data, i.e., the number of hours spent by him and the number of user interfaces designed by him in those hours. Which estimation technique are you using? A. Heuristics B. Analogous Estimation C. Parametric Estimation D. Three Point Estimation Correct Option: C explanation: Parametric estimation is the technique of using a parameter to generate estimates. In this case, the Project Manager is using the parameter of the number of interfaces produced per hour to do the estimation. In order to know more about project estimation techniques like analogous estimation, please refer to Lesson 6 of Simplilearn PMP Preparation Course. After reading the explanation, I still think the answer should be B (Analogous Estimation), as when read "You decide to use the past data, i.e., the number of hours ... in those hours." the content following "i.e." would be an example of the content before "i.e.", thus the key words should be "past data" in my opinion. Could you please advice? P.S. some questions in Simulation Test 4 seemed out of the course outline and were a lot different than Test 1~3, and some explanations were confusing too.