The following graph is used to evaluate an assumption of a multiple regression analysis. What is the assumption? 
Definitions:
Time-Driven
A costing method or approach that allocates costs based on the actual time required to perform a process or activity.
Activity-Based Costing
A pricing strategy that allocates overhead and indirect expenses to associated goods and services in proportion to their use of resources.
Total Minutes
This term often refers to the total amount of time calculated for a particular process, activity, or operational measurement.
Time-Driven
A method or system that calculates costs based on the time resources are used.
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