1. Please define population and sample in your own word. 2. Please indicate the
ID: 3366483 • Letter: 1
Question
1. Please define population and sample in your own word.
2. Please indicate the population and sample of each of the scenarios below.
Scenario 1: A college wants to determine if students prefer face-to-face or online classes. 100 students are selected at random and given a survey.
Scenario 2: A restaurant wants to determine customer satisfaction. They place cards on the tables and 55 surveys are returned.
Scenario 3: CNN wants to predict the outcome of an election. They poll 250 voters as they are leaving the polling place.
Explanation / Answer
Solution: 1. Population: Population is a group of items, units or subjects which is under reference of study. Population may consist of finite or infinite number of units.
Sample: Sample is a part or fraction of a population selected on some basis. Sample consists of a few items of a populationn.
Scenario 1: A college wants to determine if students prefer face-to-face or online classes. 100 students are selected at random and given a survey.
Answer: Population: Entire College students
Sample: 100 college students
Scenario 2: A restaurant wants to determine customer satisfaction. They place cards on the tables and 55 surveys are returned.
Answer:
Population: All the customers who visited the restaurant
Sample: 55 customers who responded to survey
Scenario 3: CNN wants to predict the outcome of an election. They poll 250 voters as they are leaving the polling place.
Answer:
Population: All voters
Sample: 250 voters
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