Oliver Lehman Question solution pls advise
For below question which is from Oliver Lehman, I just can't able to understand why answer is option three. Is variable and statistical sampling same ?
56. What is true for statistical sampling?o Statistical sampling can be used to verify for each individual item in a lot, whether it can be accepted or must be rejected.o Attribute sampling means collection of quantitative data showing the level of conformity for each item of a sample.o Variables sampling includes collection of quantitative data on the degree of conformity for each item of a sample.o Statistical sampling is commonly used in quality assurance to examine if items of a lot conform to quality standards. |
Also can any one explain for Ques 59 (sorry unable to paste histogram image here) answe is option 1 as per my understanding it should be option 2
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94. Together with your team, you applied three-point estimation on a critical path which consists of two activities. The following duration uncertainties are all calculated assuming a ±3sigma confidence interval. The duration uncertainty—defined as pessimistic minus optimistic estimate—of the first activity is 18 days; the second estimate has an uncertainty of 24 days. Applying the PERT formula for paths, what is the duration uncertainty of the entire path? How option 2 which is correct is calculated ?o 21 days o 30 days o 42 days o No statement is possible from the information given. |
108. Your project exceeded costs in the past caused by an underestimation of resource costs in the cost baseline: PV: $1,200,000, EV: $1,000,000, AC: $1,200,000 You expect the underestimation to influence the future as much as it did in the past. If the value of the remaining work ( BAC – EV) is at $1,000,000, what should be your new EAC (estimate at completion)?108o $1,800,000 o $2,000,000 o $2,200,000 o $2,400,000 |
173. What is wrong in this diagram? option three is correct why? o The data date must be accurately between weeks. o AC cannot be higher than PV when EV is lower. o EV cannot be assessed beyond the data date.o PV cannot be assessed beyond the data date. |
Project weeks100%
59. You recently assigned staff members to activities, estimated work and scheduled your project. You then created the following resource histogram for your staff: What does this diagram tell you? 59o The project can probably not be finished as scheduled. o You may be able to finish the project early by reassigning work. o You should avoid network logic diagramming for scheduling. o You may run into problems with dual reporting relationships. |
What is Burn rate i thought it is CPI so my answer is option4 however correct answer is option 1 how is 1.20 calculated ?
87. A project was assessed and the following earned value data have been found: PV: $750,000 EV: $750,000 AC: $900,000 What is the burn rate of the project?87o 1.20 o 1.10 o 1.00 o 0.83 |
For below question why option 1 is correct I opted for option 4? also what is post mortem anaysis?
92. Post-mortem analysis after scheduled finish date of a project shows a CPI of 0.8 and an SPI of 1.25. What is a plausible explanation for that? o The project was terminated early. At that time, it was over budget and ahead of schedule.o The project has produced additional deliverables which were originally not required.o The project has evidently been finished under budget and behind of schedule.o The project has evidently been finished over budget and ahead of schedule. |
Notes
sspawar
Wed, 02/20/2013 - 02:02
Permalink
56 it is a definition of
56
it is a definition of statistical sampling. You should learn about attribute and variable data a lot samplings etc
59
as activities need 100% resources for successful scheduled completion.
In figure at 3 - 4 places resources are shown shorter than required. Hence option one is correct . Resource leveling or reallocation of resources is not shown in any option. Option 3 is saying for reasseSsment , is not valid option.
94
recently solved in another topic posted by Raza.
http://www.pmzilla.com/can-someone-plz-explain-question-oliver-lehman-test
108
option D is only possible answer among all 4. EAC = BAC / CPI
173.
AC EV can not be estimated or projected values these are always of worked done data. While BAC EAC ETC and PV are always estimated values.
87
burn rate is reciprocal value of CPI.
92
there are concepts that post mortem of a project means review of incomplete closed project and for successful completed closed project baselines are revised with. New EAC and CPI never be less than 1.though in some cases CPI and SPI may be greater than 1.but at completion never be less than 1.