An Industry Example of Key Process Input Variables. A Six Sigma Black Belt project was initiated to understand the reasons for unexpected variations in the viscosity of a gearbox oil.

Examples of Endogenous Variables For example, assume a model is examining the relationship between employee commute times and fuel consumption. As the commute time rises within the model, fuel ...

Excessive daytime sleepiness, nonrestorative sleep and sleep behaviors all play a significant role in sleep health, according to results of a network analysis of sleep variables published in Sleep ...