Example 1

Average annual rainfall in various states of Mathematics Land and that of other countries

The rainfall for the various states in Mathematics Land has been collected for the years 2003–2005. The states are Euclid, Euler, Newton, Gauss, Fermet, Kepler and Maxwell.
Many comparisons of rainfall could be made. For example:

• for one year between the states
• for a number of years for one particular state
• of countries from around the world which are on the same latitude – north or south – or longitude.

Annual rainfall in millimetres for the states and territories of Mathematics Land for the years 2003–2005

Year	Euclid	Euler	Newton	Gauss	Fermat	Kepler	Maxwell
2005	306	477	478	1250	206	616	498
2004	463	637	610	1223	214	578	493
2003	388	686	518	1227	260	611	484
Historical Average<	352	548	630	1168	236	654	566

Some solutions

1. This graph shows the rainfall in the Mathematics Land states in 2005.
   
   Detailed description
2. The graph below shows the average rainfall for the three years for the state of Newton.
   
   Detailed description

Given different data sets, many straightforward comparisons can be made.