"To consult the statistician after an experiment is finished is often merely to ask him to conduct a post mortem examination. He can perhaps say what the experiment died of"

This quote by Ronald Fisher is an amusing method of stating that it is typically far too late to seek advice from a statistician after an experiment has actually been finished. Already, the experiment has actually currently been conducted and the results remain in. The statistician can just examine the information and supply a description for the results, however they can not change the outcome. This is similar to a post mortem assessment, where a doctor can just identify the cause of death after the client has already passed away. In the exact same method, the statistician can just provide a description for the results of the experiment after it has been conducted.