What are mostly used models used in the software industry to estimate size? - Project management (PMP)

What are mostly used models used in the software industry to estimate size?

Line of Code(LOC)
- This refers to the pure whitespaces and lines containing comments which are not included in the metric.
- They are used to measure the volume of code and can compare or estimate the projects.

Function Point
- It is a unit of measurement which is used to express the amount of business functionality which an information system provides the user.

Feature points
– They allow to add the changes which help to improve the applicability of the systems with the help of significant internal processing (e.g.: operating systems, communications systems).
Impact of reused software components upon the size estimate - Project management (PMP)
Impact of reused software components upon the size estimate - Project management (PMP)
Line of code as a unit of sizing of software - Project management (PMP)
Line of code is a metric used to measure the size of software for estimation mainly by counting the number of lines needs to be written in the source code......
Guidelines for counting Line of Code - Project management (PMP)
a. Each counted line must contain only one source statement. b. Count all delivered executable statements.....
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