Confusion in sample and population

[Neha Nagapurkar]

Hello, 

Is it necessary that sample always represents population? If it doesn't represent population, will it still be considered sample? 

Thank you for help in advance. 

Neha Nagapurkar

[Statistics 1 Support 1]

Hello Neha,

The sample selected should be a representative of population so that inferential statistics which we are performing would be correct. It is necessary that a sample should be representative of population but while selecting sample statisticians make sure that sample is representative of population.