Question

National surveys are frequently conducted by asking a number of several thousand adults throughout the nation and using these data to infer the opinion of the nation's adults.

Explain which set forms the population and which form the sample. Cite an example from a newspaper, TV or Internet. Say the topic of the survey, the population, the sample and the result.. Cite an example from a newspaper, TV or Internet. Say the topic of the survey, the population, the sample and the result.

Answer 1

National surveys are frequently conducted by asking a number of several thousand adults throughout the nation and using these data to infer the opinion of the nation's adults.

Population:- Here the set that forms the population is the set of all the adults in nation.

Sample:- Here the set that forms the sample is the set of a number of several thousand adults throughout the nation.

Example:- Consider the famous example of predicting the election results using Exit Polls.

Here,

Topic:- Predicting Election Results using Exit Polls.

Population:- Nation's all the population that has given the vote.

Sample:- A sample of several thousand people throughout the nation who have given the vote.

Result:-​​​​​​-Here, using the data obtained on sample, we infer about the results of the Nation's election for the entire population. We try to predict who will win the election in the nation based on the information collected on a part of the population, i.e. sample.