What are the two types of quantitative data?

What is Data frequency?
Relative frequency?
Cumulative frequency?

What are the 4 types of graphs?

4 steps to group data?

What is Index (Indices)?

CPI???

Inflation: meaning and equation

List the 7 sampling techniques

What is simple random sampling?

What is Systematic Sampling?

What is stratified and Cluster sampling? (the difference)

What is multi-stage sampling?

- What is Voluntary response?
- convenience sampling?