In a chi-square contingency test, the number of degrees of freedom is equal to the number of cells minus 1

In this restaurant services study, a listing of all customers in this restaurant over a particular week would constitute a:

A) sample. B) population. C) numerical variable. D) process.

In a data flow diagram of the customer payment process, "update receivables" will appear above or in

A) a square. B) a circle. C) two horizontal lines. D) none of the above