A group of data is a sample.
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Median Function
the larger the group, the more likely the statistical probability of loss will be equal
Because its the group for which the idependent variable is help constand in a statistical study.
A statistical estimate is an estimation of population based on one or many data samples of a group. There are two types of estimates: point and interval.
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.