What is the benefit of using pre-programmed functions to analyze data?"

**Must be 5-7 sentences on the subject.

A pre-programmed function is a section of code which is reusable to perform certain routine. One benefit of using a pre-programmed function to analyze data is the code redundancy can be reduced. The function is only written for once and it can be called to perform a specific data analysis whenever it is needed.

Besides, a pre-programmed function also offer consistent analytical output as all data are processed by a same analytical procedure in the function.