Pilot studies can examine how much manpower and material resources are spent as originally planned, making formal experiments more economical. Even the feasibility of the experimental plan can be decided.
The pilot study can examine how much human and material resources it will spend as planned, making the formal experiment more economical. Decisions on the feasibility of the experimental scheme can even be made.
The pilot study can examine how much manpower and material resources will be spent according to the original plan to make the formal experiment more economical. It can even make a decision on the feasibility of the experimental plan.