For example, in control-theoretical analysis, we see the interaction asdynamically changing states.

Here, the statistical model (regression) links the time it takes for a user toelicit a response to the design of the task environment (distance and width of buttons).

For example, statistical models, such as Fitts’ law, describe a relationship that is considered a sta-tistical determination.

In statistical determination, there is a stochastic relationship between the two entities.