• ranking counts and amounts
  • total and tallied numbers
  • business mapped by number of employees
  • average annual precipitation
  • number of dead and dying trees
    
    
• ranking ratios
  • average number of people per household
  • percentage of population aged 18 - 29
  • percentage of available parking spaces
    
    
• ranking discretionary and qualitatively (ranked categories)
  • streams ranked by recreational value
  • soils capable of growing crops
  • fire hazard based on fire history, veg. belt, fuels, slope, aspect

• grouping counts, amounts and ratios to simplify
  • creating classes manually
  • logical break determined by person
    • 35 % living below poverty line
    • 50 % and below, 51 to 85, above 85 % forest cover
    • small, moderate, large extent for fire perimeters
      
      
• standard classification schemes
• natural breaks
• quantile
• equal interval
• equal area
• standard deviation
  
  
• how many classes



• dealing with outliers
• extremely high or low values
• result of error or skewed data

Index