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.
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)