What exactly do the bars in the Group Profile window reflect?
In all cases but one, the bars are absolute values, whose meaning is specified by the selection in the Select Statistics drop down list and refer to the selected range. But since the attributes might have very different scales, the absolute values are often not comparable. Only if Profile is selected in the Select Statistics drop-down list, the bars do not show absolute values. In this case, the bars reflect the deviation of the mean of the selected range from the mean of the entire data set. To get comparable measures, the deviations of means are divided by standard deviations of the entire data set: i.e., if the bar is short, the mean of the selected range does not differ very much from the overall mean (the mean of the entire data set) in terms of the standard deviation. In the bar chart of the Group Profile window, it can easily be seen which attributes make up the group’s profile (i.e., differ most from the rest of the population exhibiting a long bar).
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