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statmanrobin / Stat2Data

Datasets for the Stat2 Textbook
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Distance in RailsTrails is in miles #2

Open AmeliaMN opened 2 years ago

AmeliaMN commented 2 years ago

I run into this every semester and always forget to submit an issue! The documentation for the RailsTrails dataset says the Distance to the nearest trail entrance is in feet, but the measurements are clearly in miles. Either the documentation or the data should be updated.

civilstat commented 7 months ago

I'd like to second this! On Problem 3.18, I remind my students to read the documentation carefully and plug in SquareFeet=1.5 instead of SquareFeet=1500 since it already represents 1000s of square feet. But then we are thrown off by the wrong R documentation for Distance, because all the values are between 0 and 4, which makes sense for miles but not feet.

civilstat commented 7 months ago

And as an aside, the instructor answer key for problem 3.18 is wrong, because the key does wrongly plug in SquareFeet=1500 when it should plug in 1.5 instead.