nt height, or the percentage of students who have used a cell phone today, for all classes taught at your school, would those be legitimate variables?...

(c) If you were to record the average student height, or the percentage of students who have used a cell phone today, for all classes taught at your school, would those be legitimate variables? What would the observational units be in this case? Fall, 2008 (d) What are the observational units in your time management study?