Question: 6.6. The Janka hardness data in data frame janka gives the density (Dens) and hardness (Hard) of a sampie of Australian Eucalypt hardwoods. The problem

6.6. The Janka hardness data in data frame janka gives the density (Dens)

and hardness (Hard) of a sampie of Australian Eucalypt hardwoods. The problem is to build aprediction equation for hardness in terms of density.

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