Answer:
True
Explanation:
İf we considering these costs, we will observe that these gonna help managers to be able to prevent the project cost over run and also negative variances being created during project implementation takes place.
Common causes and special causes are two different types of origin of variation in a process, as defined in the thinking and statistical methods , common cause is the usual, historical, quantifiable variation in a system, while special causes are unusual, previously unobserved, non-quantifiable variations. The distinction is fundamental in the philosophy of statistics and the philosophy of probability, with different treatments of these subjects being a classic problem of the interpretations of probability, this was recognized and discussed as early as in 1703 by Gottfried Leibniz; notwithstanding several alternative names have been used over the years.
The variation of common cause is characterized by:
-Phenomenon constantly active inside the system;
-Probably predictable variation;
-Irregular variation within a historical experience base; Y
-Carence of significance of individual high or low values.
The variation of special cause is characterized by:
-New phenomenon, without anticipating, emerging or previously ignored within the system;
-Inherently unpredictable variation, even probabilistically;
-Variation outside the base of historical experience; Y
-Evidence of some inherent change in the system or our knowledge of it.
-The variation of special cause always comes as a surprise. It is the signal from inside the system.
