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Analogous estimating is one of our tools and techniques to predict the duration of activities analogous

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estimating is creating an analogy between projects between activities.

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It's a way of taking similar project work and saying OK that project took six months.

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Ours is very similar maybe just a little larger.

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So I'm going to say it takes nine months.

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So it creates an analogy between similar project work.

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I have to have historical information to do this because I need a similar project to create my analogy.

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This is also known as top down estimating because of starting at the top and working the way down and

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analogus estimate is not very reliable.

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It's fast.

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It's the least expensive of all of our estimating approaches.

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But it's the least reliable because it's just a quick subjective.

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The historical information is required.

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I can't just pick this out of the blue right I have to have something to compare it to.

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And they have to be similar.

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So I can't take a manufacturing project and create an analogous estimate to an I.T. project.

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They are not really similar work.

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Obviously the historical information also has to be reliable.

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If that previous project didn't have its updates to the schedule and activity durations we may not be

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based on reliable information.

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So on paper it says it should take six months but that project in the past actually took 12 months.

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So our analogous estimate would be flawed because we're not basing it on reliable information.

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Expert judgment is also used with an analogous estimate because I can look at that project and really

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understand the work and understand the work of the current project.

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From that I could create a more reliable analogous estimate because I have experience and the expertise

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to really compare and do some critical thinking between those two projects.

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So some very simple examples.

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Project eight took six months.

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Project is a little bit bigger.

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So I predict it will take eight months.

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So it's pretty simple pretty straightforward.

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So that's an analogous estimate.

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You could also do it based on ours.

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So you could say all right.

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It took eight hours to install this picture in the fast.

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Well that was hard to say.

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You could say it took eight hours to install this fixture on a past project but we've learned how to

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install the fixture properly.

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So we understand the process of installing this fixture so it should take us about six hours now.

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So we have some learning curve there that we talked about but we're also using an analogous estimate.

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OK so that's an analogous estimate know that for your exam.