About: http://webisa.webdatacommons.org/36435259

Property	Value
http://www.w3.org/1999/02/22-rdf-syntax-ns#type	http://www.w3.org/ns/prov#Entity
http://www.w3.org/ns/prov#value	Stratified sampling was used where the overall population was divided into smaller groups, classified according to gender, status, age, length of the service and other variables such as educational levels.
http://www.w3.org/ns/prov#wasQuotedFrom	cgpublisher.com