Comparative and Evaluative Survey:

Comparative Survey: Let us  suppose, you wish  to compare the "perceived needs of  rural  and urban women  in order to  find similarities and dissimilarities, this type of  survey is called as comparative  survey.  In the analysis of comparative survey data, a-pre-existing  criteria should be  there. In  this  example the  researcher requires a  list of needed  criteria against which the comparison would be made between  the  urban and  rural women's  perception  of nutritional needs.  

Evaluative Survey: There is  another type of  survey approach appropriate for studying the effectiveness of a particular method: this is where  the researcher attempts to  asses whether or not  the method  used meets the criteria stated. In  this  case also researcher needs pre-existing criteria against which the  existing condition is evaluated. The method is called an evaluative survey. Where can  this method  be  applied? 

- Evaluate when  a new method  is  started. 

- Find out whether the method, which  is in operation,  is  appropriate to meet  the criteria selected for the purpose.