The questions you will answer in this FACTivity are: How do standardized units of measurement help scientists to answer questions? What are the advantages of using percentiles to standardize measurements? What are the disadvantages of using percentiles to standardize measurements? You will answer these questions by analyzing weather data from all 50 States to determine which are the most and least desirable States for water-based outdoor recreation. Materials: Provided graphic organizer Blank pa Topics: Active Forest Management, Water, Climate, Graphs, Percentiles, Reading Charts, Weather.