Save guides, add subjects and pick up where you left off with your BBC account. Map scales close map scaleThe ratio of the length of a feature on a map to the same length in real life. are often ...

To calculate outcome criteria based on a percent change as, e.g., the widely accepted response criterion, the scale has to be transformed into a ratio scale beforehand. Recent publications have ...

Map scales can be written in two ways, a simple scale with units or a ratio scale. A map scale is given as 1 cm = 2 km. This means that every cm on the map represents 2 km in real life.