1.The method used by physicist in collecting data

a.data
b.sample
c.experimentation
d.investigator

2.The person gathers data using the observation method

a.data
b.investigator
c.subject
d.sample

3.The information called

a.data
b.investigator
c.subject
d.sample

4.A small part of a group chosen to represent the whole group

a.interviewer
b.survey
c.data
d.sample

5.Data collected using face to face interview or written questionnaires

a.data
b.sample
c.survey
d.experimentation

ANSWER IT CORRECTLY : D​