engineering recuitment UKPSC Polytechnic Lecturer Mock Test 2024 Industrial Engineering Operations Research PERT and CPM
Variance of an activity may be written as:
(where, tp = pessimistic time, to = optimistic time)1
\({\left( {\frac{{{t_p} - {t_o}}}{6}} \right)^{1/2}}\)
2
\({\left( {\frac{{{t_p} - {t_o}}}{{12}}} \right)^2}\)
3
\({\left( {\frac{{{t_p} - {t_o}}}{6}} \right)^2}\)
4
\({\left( {\frac{{{t_p} - {t_o}}}{{12}}} \right)^{1/2}}\)