na-adjective
quantitative; metrical
Used in academic, scientific, or technical contexts to describe something that is measured, expressed in quantities, or related to metrics.
この研究では計量的な分析を行った。
In this research, we conducted a quantitative analysis.
計量的なデータに基づい
We need to make a decision based on quantitative data.
質的 means 'qualitative', the opposite of 計量的.
Compound of 計量 (measurement, weighing) + 的 (-like, -al). The exact historical derivation is uncertain, but the word follows a common pattern for forming adjectival nouns from nouns.