I know that we when we discuss attribute types, we distinguish between nominal, ordinal, interval and ratio.
I have a data set with these attributes:
- price: median housing price in USD
- crime: crimes committed per capita
- nox: nitrous oxide, parts per 100 mill.
- rooms: avg number of rooms per house
- dist: weighted dist. to 5 employ centers
- radial: accessibiliy index to radial hghwys
- proptax: property tax per $1000
- stratio: average student-teacher ratio
- lowstat: percentage of people 'lower status'
- lprice: log(price)
- lnox: log(nox)
- lproptax: log(proptax)
I have tried determining the attribute type of each of these attributes. I have found that all the attributes are ratios except of
radial which is ordinal. Is this correct? I have some troubles distinguishing between ratio and interval.
rooms seems to be an average of an ordinal attribute. Does this make it a ratio?
The housing price is a median price. Normally, when you find the median value, you order the items and pick the element in the middle, so I wonder if this attribute is an ordinal attribute?