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Why are process reports compared with the same period, with plans, and on a month-on-month basis?
Only through comparison can the gap be determined.
One of the main uses of data is for comparison; without comparison, how can we analyze its suitability? For example, in the case of product yield, by comparing this month’s yield with that of last month as well as the planned yield, it is possible to determine whether the yield is high or low. Further analysis of the reasons behind this will then enable better guidance for production processes