Q. Explain the cost drivers and EAF of the intermediate COCOMO model?

Ans. There are 15 different attributes described as cost drivers' attributes that determine the multiplying factors. These factors rely on computer, personnel, product, and technology attributes as well know as project attributes. Of the attributes are necessary product complexity (CPLX), software reliability (RELY), analyst capability (ACAP), application experience (AEXP), use of modern tools (TOOL) and required development schedule (SCHD). Every cost driver has a rating scale and for each rating there is multiplying factor is provided. For example for the product attributes RELY the rating scale is low, very low, nominal, high and very high.

The multiplying of factor for these ratings is .75, .88, .1.00, .1.15, and 1.40, respectively. Therefore if the reliability requirement for the project is judged to be low then the multiplying factor is .75 while if it is judged to be extremely high the factor is 1.40. The attributes as well as their multiplying factors for different ratings are shown in the table below