Q. Explain the relationship between Productivity and difficulty?
Productivity refers to metrics as well as measures of output from production processes per unit of input. Productivity P perhaps conceived of as a metrics of the technical or engineering efficiency of production. In software project planning efficiency is defined as the number of lines of code developed per person-month Difficulty The ratio (K/td2) where K is software development cost and td is peak development time is called difficulty and denoted by D which is measured in person/year.
D= (K/td2)
The relationship demonstrates that a project is more difficult to develop when the manpower demand is high or when the time schedule is short. Putnam has experiential that productivity is proportional to the difficulty Pa Db The average productivity may be defined as P=Lines of code produced/Cumulative manpower used to produce code =S/E Where S is the lines of code produced as well as E is cumulative manpower used from t=0 to td (inception of the project to the delivery time).