Populations and samples
It is important to know the definition of all these term because often there are a few marks on these in the exam.
Population- collection of individual people or items. e.g manufactured items, plants,members of a club.
-Finite size when you can count the population accurately
-Infinate size id it's immpossible to know exactly how many members of the population there are. e.g sand grains on a beach
Census- investigation that obtains information from a population.
- every single member of the population is used
- it is unbias
- it gives an accurate answer