Question

The size of a software product to be developed has been estimated to be 22000 LOC. Predict the manpower cost (effort) by Walston-Felix Model and SEL model.

Answer 1

ANSWER

SOFTWARE WALSTON

Answer 2

Please find the explanations and formulae associated with the SEL and W-F models below:

Explanation:

Any new software project requires a cost and time estimate. Before development can begin, these estimates must be created, but how can they be made? There have been several estimation methods developed, all of which share the same features.

• The project's scope must be established ahead of time.

• The cornerstone for assessing software is software metrics.

• The project is broken down into small PCs, each with its own cost.

• There are several ways to get an accurate cost and schedule estimate.

• Calculation of the time delay

• Symbol decomposition techniques were used to estimate project costs and timelines.

• Obtain one or more estimated software programmes that are automated.

• If we denote,

1. E= Efforts (Person Per Month)
2. DOC=Documentation (Number of Pages)
3. D = Duration (D, in months)
4. L = Number of Lines per programme

• By Walston-Felix formula:

                           $E = 5.2L^0^.^9^1\\\\D = 4.1 L^ 0^.^3^6\\\\I = \Sigma \left \{ {{29} \atop {i=1}} \right W_iX_i$

• By SEL formula:

                           $E=1.4L^0^.^9^3\\\\ DOC=30.4L^0^.^9^0 \\ \\ D=4.6L^0^.^2^6$