Describing Data: Graphical Methods. So far we have been concerned with moving from asking a research question to collecting good quality empirical data From now on we'll be concerned with how to make sense of our data.
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Raw DataHow do we get it before it gets us?
Pie Chart Showing Composition
Bar Plot(Can be used on non-compositional data as well)
Histogram(Vertical axis could also be % or relative frequency)
Yet another Histogram(Small data set—could do stemplot too)
e.g. If someone in the class is a retired person returning to college, his age would be an outlier (but his weight probably not)