Two categorical predictors of one continuous response.
People often refer to backwards or thinking as being like a neanderthal, but it’s not clear neanderthals were dumb (in fact some evidence suggests they were smarter than humans).
Until the next Encino man documentary it will be hard to know for sure. But we can compare the size of Neanderthal and human brains.
The data are here https://whitlockschluter3e.zoology.ubc.ca/Data/chapter18/chap18q12NeanderthalBrainSize.csv . Note there are three variables:
- lnBrain is the log of brain volume (measured in \(cm^3\)).
- lnMass is the log brain mass (measured in kg).
- species is recent (Homo sapiens) or neanderthal (Homo neanderthalensis)
For your homework analyze these data. Include summary stats, 2-4 plots, and a two-to-four paragraph description of your motivation, methods ,results, intepretation and conclusion. When you are done share the here.
Note you will be exchanging these with other class members monday.