Absolute values can be: values that show the frequency of appearence of a specific event, e.g. the number of accidents in a year values in a known scale, e.g. temperature in ° Celsius Relative values can be: values that show their relation with something else, e.g. population density partial values shown in relation to total values, usually in percentages, e.g. rate of public traffic on total traffic values calculated on average, e.g. the average value of births in a country values that show the increase or decrease of a phenomenon, e.g. decrease of minimum wages in 2013 Visit the OCAD Wiki for more information.