Following table shows activities, their duration and labour requirements:

Prepare histogram based on EST and LST schedule

Which schedule you will prefer and why?

$\text{EFR}=\text{Effective force ratio} = \frac{\text{effective work force}}{\text{total work force}}\times 100 = \frac{144}{210}\times 100 = 68.571\%$

$\text{EFR}=\text{Effective force ratio} = \frac{\text{effective work force}}{\text{total work force}}\times 100 = \frac{147}{231}\times 100 = 63.64\%$

Effective work force ratio is greater in case of EST schedule, therefore it is preferable to use EST schedule

Also as per Burges Least Square Rule;

As per EST Schedule:$\hspace{4cm}$ As per LST Schedule:

$\sum (\text{Labour Requirement}^2) : 1062$ $\hspace{1cm}$ $\sum (\text{Labour Requirement}^2) : 1131$

From Above; it can be concluded that, EST Schedule can be used preferably.