The first step of a research is

• reviewing the literature

• formulation of research problem

• preparing the research design

The study type such as different sample and same characteristics is

• TREND

• COHORT

• PANEL

The 100 undergraduate student surveyed.

• Population

• Sample

All teacher Association members.

• Population

• Sample

Using a census for

• large population

• small population

Observation is

• primary data collection

• secondary data collection

Reports are

• primary data collection

• secondary data collection

Systematic sampling is

• Random Sampling

• Non-Random Sampling

Purposive sampling is

• Random Sampling

• Non-Random Sampling

Colors of baseball caps in a store

• qualitative variable

• quantitative variable