qualitative variable

qualitative variable

A variable which is not measurable on a continuum or represented in a quantitative relation to a scale—e.g., race, sex. Qualitative variables fit into discrete categories based on their attributes.
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Chi-square test was used for qualitative variable (frequency of post-operative pain, gender) and independent sample T-test for quantitative variable (age).
For the qualitative variable distribution, the absolute frequencies of each category were used and Fisher's test was administered.
The value of qualitative variable U is usually assigned by experts' comment.
The expression using numbers of the presence of qualitative variable can be often indirectly made, using a basic numerical variable or a variable wherewith it is strongly linked to.
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.
This nominal qualitative variable is divided into the following categories: public elementary school, private or hybrid; public high school, private or hybrid.
By contrast, these variables were used as predictors: the sector as a qualitative variable with 10 categories using the Economic Activities National Classification code (NACE-93 digit-1 level) and the size using the natural logarithm of Total Assets as a proxy variable.
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.
The process of shifting the interpretive framework of binary-coded coefficients can be made without the use of a computer program by adding a constant, k, to the coefficients within each set of coefficients for a qualitative variable and subtracting k from the regression equation constant or intercept.

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