How can effective visualisations help to spot implausible data? In the example of Likert scale data there was an entry error at one site. Zak Skrivanek presents visuals that nicely show the outlier. Visualisations are available on the
Wonderful Wednesday blog.
To spot irregularities in the data relatively simple graphs like density plots can be use. Stacked bar charts made it obvious what happened in this data example. The demonstrated R notebook gives a lot of different views on the data. Finally the pros and cons of alluvial plot are discussed. The next challenge is on power and multiplicity. See the
Wonderful Wednesday homepage for more detail.
Wonderful Wednesdays are brought to you by the Visualisation SIG. The Wonderful Wednesday team includes: Bodo Kirsch, Alexander Schacht, Mark Baillie, Zachary Skrivanek, Lorenz Uhlmann, Rachel Phillips, David Carr, Steve Mallett, Rhys Warham, Lovemore Gakava, Zara Sari, Paolo Eusebi, Martin Brown, Martin Karpefors, Benjamin Lang.