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Update model-building.Rmd (#627)

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Mark Beveridge 2018-06-20 10:01:39 +01:00 committed by Hadley Wickham
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@ -165,7 +165,7 @@ Nothing really jumps out at me here, but it's probably worth spending time consi
the relationship between `price` and `carat`?
1. Extract the diamonds that have very high and very low residuals.
Is there anything unusual about these diamonds? Are the particularly bad
Is there anything unusual about these diamonds? Are they particularly bad
or good, or do you think these are pricing errors?
1. Does the final model, `mod_diamonds2`, do a good job of predicting