A popular method is widely used. Especially in education Science brings together highly ml of sample from the population mean. And often Gather information about the perceptions, attitudes, interests, etc. The advantages of this assay. This note is to ask questions and answer them from a person involved in the issue that truly needs to be planned for carefully selected population group as the actual population. Tools Often used in survey Is a query to get more complete information, or to persons who have not read and write or do not have an aptitude for languages.
การแปล กรุณารอสักครู่..
