The number of students appeared from state A and state B in an examination over the years 2004 to 2009 are given below: Year State A State B 2004 260 ...
Question
The number of students appeared from state A and state B in an examination over the years 2004 to 2009 are given below:
| Year | State A | State B |
|---|---|---|
| 2004 | 260 | 340 |
| 2005 | 320 | 420 |
| 2006 | 480 | 480 |
| 2007 | 780 | 660 |
| 2008 | 540 | 440 |
| 2009 | 760 | 440 |
What is the difference between the average number of students from state A and state B over these years?