Using an “I don’t know” Option in Survey Design

I don’t know.  In 1982’s Fast Times at Ridgemont High, high school Social Studies teacher Mr. Hand asks student Jeff Spicoli, “Why are you continuously late for this class Mr. Spicoli? Why do you shamelessly waste my time like this?” to which Spicoli responds, “I don’t know.”  Why didn’t Jeff Spicoli know the answer toContinue reading “Using an “I don’t know” Option in Survey Design”