Answer :

Quantitative & Qualitative ! 

Quantitative observations are measurements & Facts.

Qualitative May not be facts.

The correct answer is:

qualitative and quantitative.

Explanation:

Observation is the rapid retrieval of information from a first source. In living beings, observation contracts the senses. In science, observation can also include the recording of data via the use of scientific tools. Qualitative observation is a personal process of collecting data or knowledge while quantitative observation is an objective process of accumulating data or information.