Accuracy of Estimation

Because accuracy is so important when planning a good project, I normally use both the top-down and bottom-up estimating techniques to evaluate the results I have achieved. If the results are similar, then I know that I'm on the right track. If, however, the results vary considerably, then it means something is wrong, and I may need to review the values again. This time, I will solicit expert judgment by using a certified cost accountant or seasoned project manager to go through the estimation with me.

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