Answer
The Organization of Petroleum Exporting Countries (OPEC)
Explanation:
The Organization of Petroleum Exporting Countries (OPEC) is a cartel made up of countries (and nationalized companies) which cooperate to control the supply (and therefore the prices) of a significant amount of the world's oil.
Answer:
cluster sample
Explanation:
Cluster sampling is used in statistics with the natural population. the population is divided into subgroups and then through random sampling researcher selects a random sample from the subgroups of the population. This sampling has been used in market researcher When the researcher does not get the information as a whole. Suppose a person wants to know about the taxes in the city, the researcher selects the cities and collect data from that city and implement that data on the whole population. It is more practical and more reliable then stratified and simple random sampling. In this sampling, the data should be heterogeneous. each cluster of the population should be the representation of the whole population.
<u>It is of two types:
</u>
- Single-stage cluster sampling
- Two-stage cluster sampling
Emmmmm are you ok?????????
What do you mean I think three right?
