o Variance treads. If, say, a strong efficiency variance is $ 1, 000 damaging in month 1, the obvious conclusion is the fact that the process is uncontrolled and that corrective action is required to be taken. This may be correct but imagine the same variance is usually $1, 000 adverse every month? The trend indicates that your process is in control plus the standard has been mistakenly set. Suppose, though, that this same variance is persistently $1, 000 advise for all the first six months within the year but that formation has steadily fallen form 100 units in week 1 to 65 products by month6. The deviation trend in absolute keywords is constant, but relative to may be units produced, efficiency has tot steadily worse. My websites: Nike Dunk High