Population and sample data

What is the Population Data?

  • Whenever we here the term Population the first thing that strikes in our mind is a large group of people.
  • In the same way, in statistics population denotes a large group which having at least one common feature.
  • In simple words, population means all elements understudy having one or more common characteristics.
  • Population is not includes people only, but it may also includes animals, events, objects, buildings etc and it can be of any size.
  • The number of elements or members in a population is known as “Population Size (n)”.
Example: Population data
  1. The population of all teachers working in a school.
  2. The population of scooters produced by Honda Motor Company.
  3. The population of taxpayers in India.

What is the Sample Data?

  • A selected group of some elements from the population is known as the “Sample”.
  • Selected sample should be such that it represent the population in all it’s characteristics.
  • The units understudy are called Sampling units and the number of units in sample is called Sample size (n).
Example: Sample data
  1. If we select higher secondary teachers only is a sample.
  2. If we select Activa model from Honda motor company is a sample.
  3. All the taxpayers in India is population and female taxpayer is a sample.

Conclusion

In spite of the above information, sample and population are related to each other i.e. sample is drawn from the population, so without population sample may not exist.

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