What is the difference between universe and sample as used in statistics?

Solution

In statistics universe (population) refers to an aggregate of all items about which we want to obtain information. Suppose there are 1500 studetns in a particular school. If an investigation relates to all the 1500 students, then 1500 would be taken as universe or population.

On the other hand, if we take out only 150 for investigation, then 150 students will be taken as sample. Sample is only the part of the population or the universe. This part must represent the characteristics of universe. Population and sample have been projected in the figures. Figure (a) represents the universe and figure (b) represents the sample.

Some More Questions From Collection of Data Chapter

Define secondary data.

An investigator has collected the required information by personal interview with the informant. What type of data will it be called ?

What will be the kind of data published by the Railway Department regarding the progress of railways for an investigator ?

What kind of data are contained in the census of population and national income estimate, for the government ?

In order to know the likings and dislikings of the listeners of the programmes broadcast by the Himachal Akashvani the latter is keen to collect data, which method of collecting data will be suitable for it ?

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Collection Of Data

What is the difference between universe and sample as used in statistics?

Some More Questions From Collection of Data Chapter

Define secondary data.

An investigator has collected the required information by personal interview with the informant. What type of data will it be called ?

An investigator has collected the required information by personal interview with the informant. What type of data will it be called ?

What will be the kind of data published by the Railway Department regarding the progress of railways for an investigator ?

What kind of data are contained in the census of population and national income estimate, for the government ?

In order to know the likings and dislikings of the listeners of the programmes broadcast by the Himachal Akashvani the latter is keen to collect data, which method of collecting data will be suitable for it ?

Name two important sources of secondary data.

What is meant by universe ?

What is meant by sample ?

What is meant by sample method ?

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