What characteristic defines quantitative research?

Quantitative research is fundamentally characterized by its emphasis on numerical data. This approach focuses on quantifying variables, allowing researchers to apply statistical analysis to uncover relationships, patterns, or trends within the data. By using measurable data, quantitative research aims to produce objective results that can be generalized to larger populations, making it possible to draw conclusions based on statistical significance.

In contrast, the other characteristics listed do not align with the principles of quantitative research. While personal experiences and perspective gathering through interviews are more aligned with qualitative research, measurement of quality over quantity focuses on subjective interpretations rather than the objective data-driven approach central to quantitative methodology. Therefore, the defining feature of quantitative research being its emphasis on numerical data underscores the systematic and scientific nature of this research type.