1. it is a collection of facts or information

2. The person who gathers data using the
observation method

3. The method used by physicist in collecting
data

4. Data gathered using face to face interview
or written questionnaire

5. This method of gathering data is used
when you need to consult records or history

A Conducting Surveys

B. Reading Statistical
Pulslications

C. Taking measurements
in experiments

D. Data

E investigator

F. Observer​