Experience surveys differ from surveys conducted as part of descriptive research in that there is usually no formal attempt to ensure that the survey results are representative of any defined group of subjects.
Step-by-step explanation:
Descriptive research is classified as a form of analysis documenting the characteristics of the studied population or phenomenon. This approach relies primarily on the "what" of the topic instead of the "if" of the topic.
For example, in the periodical table explanations of the elements scientists were allowed to describe chemical reactions and predict when the elements were mixed. Descriptive work can not however identify the causes of a case.