What is the name for observation that is expressed in numerical form?

The term that describes observation expressed in numerical form is quantitative. Quantitative observations involve measurements or counts that can be quantified and represented as numbers. This allows for a more objective analysis of data, facilitating comparisons and statistical analysis. For instance, when measuring the height of plants in centimeters or recording the number of leaves on a tree, these measurements are quantitative because they provide precise, numerical values that can be easily analyzed or compared.

In contrast, qualitative observations describe characteristics or qualities that cannot be easily measured with numbers, such as the color of a flower or the texture of a surface. Inferential refers to conclusions drawn from data, often involving predictions based on previous observations, rather than direct measurement. Comparative observations involve examining the differences and similarities between two or more subjects, but this can include both qualitative and quantitative data, and does not solely focus on numerical expressions. Therefore, quantitative is the most accurate term for observations expressed in numerical form.