Project Estimation Technique - Software Process

Q.  Which of the following is/are Project Estimation Technique?
- Published on 22 Jul 15

a. Empirical Estimation Technique.
b. Heuristic Estimation Technique.
c. Analytical Estimation Technique.
d. All of the above.

ANSWER: All of the above.
 

    Discussion

  • Nirja Shah   -Posted on 29 Oct 15
    - Estimation of various project parameters is a basic project planning activity.

    - There are three broad categories of estimation techniques:

    Empirical Estimation Techniques
    - It is based on making an educated guess of the project parameters.
    - While using this technique, prior experience with development of similar products is helpful.
    - Although empirical estimation techniques are based on common sense, different activities involved in estimation have been formalized over the years.
    - Two popular empirical estimation techniques are: Expert judgement technique and Delphi cost estimation.

    Heuristic technique
    - It assumes that the relationships among the different project parameters can be modeled using suitable mathematical expressions.
    - Once the basic parameters are known, the other parameters can be easily determined by substituting the value of the basic parameters in the mathematical expression.
    - Different heuristic models can be divided into two classes : single variable model and the multi variable model.

    Analytical Estimation technique
    - It derives the required results starting with basic assumptions regarding the project.
    - Thus, unlike empirical and heuristic techniques, analytical techniques do have scientific basis,
    - Halstead's software science is an example of an analytical technique.
    - It can be used to derive some interesting results starting with a few simple assumptions.
    - It is especially useful for estimating software maintenance efforts.
    - In fact, it outperforms both empirical and heuristic techniques when used for predicting software maintenance efforts.

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