* Marital status: dummy qualitative variable
categorized as 0=single and 1=married;
Because of the incomplete information used by QS, each qualitative variable
yields next value set rather than a single value.
When qualitative variable
has more than two possibilities, we give them marks or, depending on the case, numbers of order, respective to their status wherein they act.
All quantitative variables were used in log form, whereas distance was included as a qualitative variable
(dummy variable) and it was taken without log.
A surprising outcome that is associated with these results is that, similar to what is documented in Tables 4 and 8, a negative sign consistently occurs for the PARK qualitative variable
. Other studies (Cheshire and Sheppard 1995; Lang and Nelson 2007) have often indicated that such a neighborhood amenity increases housing values.
This nominal qualitative variable
is divided into the following categories: public elementary school, private or hybrid; public high school, private or hybrid.
I also created a qualitative variable
to identify companies with 2004 capital expenditures of more than $1 billion (high).
First, to consider the different values of a quantitative variable or an ordinal variable as levels of a multistage qualitative variable
omits the sense of ordering that they imply.