Which of the following calculations cannot be completed with subtotal?

When creating a one-variable data table that depicts the effect of different interest rates on a car payment, the interest rate is an example of which of the following?

A) Variable B) Objective cell C) Constraint D) Set cell

Effective data ________ is achievable only if prior thought is given to what the source document should contain.

A) capture B) entry C) feedback D) analysis