I am working on analysis of a survey conducted with a 5 point likert agreement scale. I need to explain why 70% agreement (combined agreed and strongly disagreed responses) or less is not a positive response. I am trying to explain that there should be 100% agreement. Anyway, are there statistics on that? Something along the lines of when you have x% of respondents agreeing, it demonstrates that participants have a clear understanding of the information, etc? Is there any research on that? A comparison is that there is data on response rate and what constitutes a positive one. Or am I just grasping for straws?