The home_sales data set is a data frame consisting of
216 rows and 8 columns. The data are a subset of home
sales in King County, WA made between 2014-05-02 to
2015-05-27. The variables in the data set are:
price: sale price (in log10 US dollars).
bedrooms: number of bedrooms.
bathrooms: number of bathrooms.
sqft_living: size of living space in square feet.
sqft_lot: lot size in square feet.
floors: number of floors in home.
waterfront: a factor variable with levels no and `yes`
that indicate whether the home has a waterfront view.
condition: a factor variable indicating the condition of the house with levels
ranging from poor to very good.