A statistical technique used to eliminate variance in dependent variables caused by extraneous sources. In evaluation research, statistical controls are often used to control for possible variation due to selection bias by adjusting data for program and control group on relevant characteristics.
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Explain the difference between capability and control.
Unfortunately,there is no importance ot statistical quality control in weight variation test of capsule.
Because its the group for which the idependent variable is help constand in a statistical study.
to check the process variation.
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