Collection of data , Introduction скачать в хорошем качестве

Collection of data , Introduction

The collection of data is an important part of any statistical investigation.Collection of data means the method that are to be employed for getting the required information from the units under investigation.Statistical data can be either primary or secondary .The investigator must decide at the beginning whether he will use primary data or secondary data in an investigation.The choice between two depends on: 1) Nature and scope of the enquiry. 2) Availability of financial resources 3) Availability of time 4) Degree of accuracy desired. #primary # data# secondary #collection of data#statistical data# @Saral Statistics