Question Related to COCOMO model – 1

Question Mark

Suppose that a project was estimated to be 400 KLOC. Calculate effort & time for each of 3 modes of development.

Software Product Type a b c d
Organic 2.4 1.05 2.5 0.38
Semi-detached 3.0 1.12 2.5 0.35
Embedded 3.6 1.20 2.5 0.32

Solution:

As we know that 3 modes of development are

  1. Organic
  2. Semi-detached
  3. Embedded

Also we know that

Effort = a (KLOC)b person month

Time = c (Effort)d Months

Here, we are given KLOC = 400

  1. Organic:

Effort   = a (KLOC)b person month

= 2.4 (400)1.05 person month

= 1295 person month

Time    = c (Effort) d Months

            = 2.5 (1295) 0.38 Months    

            = 38 Months

2. Semi-detached

Effort   = a (KLOC)b person month

= 3 (400)1.12 person month

= 2462 person month

Time    = c (Effort) d Months

            = 2.5 (2462) 0.35 Months

            = 38.4 Months

3. Embedded

Effort   = a (KLOC)b person month

= 3.6 (400)1.2 person month

= 4772 person month

Time    = c (Effort) d Months

            = 2.5 (4772) 0.32 Months

            = 38 Months

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