Which aspect does quantitative research primarily depend on?

Quantitative research primarily relies on numerical data and statistical analysis to draw conclusions and identify patterns. This type of research is characterized by its focus on measurable variables and attempts to quantify the phenomena being studied. By collecting numerical data, researchers can apply statistical methods to test hypotheses, determine relationships between variables, and make predictions based on empirical evidence. This approach enables the use of mathematical models and facilitates comparisons, thus providing a solid foundation for making informed decisions.

The other aspects, such as descriptive analysis of words, narrative explanations of behavior, or case studies and thematic analysis, are more aligned with qualitative research methods. These methods often explore concepts through descriptions and interpretations rather than numerical measurement, which distinguishes them from the quantitative approach. Thus, the key characteristic of quantitative research is its emphasis on numbers and their statistical treatment, making the correct choice clearly focused on this defining feature.