Sentence examples for a qualitative variable from inspiring English sources

In general, k - 1 dummy variables are needed to model the effect of a qualitative variable that may assume k values.

For a qualitative variable, a frequency distribution shows the number of data values in each qualitative category.

Clearly, the independent variable "container type" could influence the dependent variable "sales". Container type is a qualitative variable, however, and must be assigned numerical values if it is to be used in a regression study.

Container type is a qualitative variable, however, and must be assigned numerical values if it is to be used in a regression study.

19 studies used linear distance as a measure of exposure to incinerators, 11 studies atmospheric dispersion models, and the remaining 11 studies a qualitative variable such as presence/absence of the source.

The superficial velocity was evaluated in five levels, from 40 to 260 cm h−1, while the type of adsorbent, a qualitative variable, was assessed at three levels, saving materials and time according to the Doehlert design.

This test was used because gender is a binary qualitative variable, and the morphometric variables are normally distributed quantitative variables.

The outer pedicle width (OPW) was re-coded into a binary qualitative variable, and the chi-squared test was used to assess the association between OPW and patient gender, since this measure is considered to be the most important when planning TPSF surgery.

Regression with only dummy variables representing a single qualitative variable is equivalent to one-way analysis of variance.

It will be analyzed as a dichotomy qualitative variable (yes/no); assessing the presence/absence of depression, anxiety and somatic-morph disorders (according to the PRIME MD classification).

Quantitative seniority in the establishment was transformed into an ordinal qualitative variable for statistical purposes: <5; 5–10; >10 years.