Citation: Kiernan, Nancy Ellen (2001). When the Answer is Zero, Zilch or 0: Tipsheet #19, University Park, PA: Penn State Cooperative Extension. This document is part of a series of Tipsheets that contain practical evaluation illustrations based on current research and developed by Nancy Ellen Kiernan at Penn State Cooperative Extension. This document focuses on how to increase responses within a survey. Copyright 2001 The Pennsylvania State University#Survey #ExtensionEducationEvaluation #Question #Response #HowTo #Rate