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Marcus
Birkenkrahe
Revision: DS 4 Everyone - Quiz Feedback 5 - Note: some of the examples involving "summary" are not quite relevant in this video. I need to retake it! I had not looked carefully enough at the sample datasets myself. That summary(x1)=summary(x2) etc. is not surprising (they are the same numbers). The statistical summaries of the y-datasets however are different. Also, summary takes one object as an argument, not several (i.e. the summary() function does NOT vectorize - it does NOT compute a statistical result from several of its input arguments). Best way forward: play around with the Anscombe Quartet dataset: https://stat.ethz.ch/R-manual/R-devel/library/datasets/html/anscombe.html