odds under over after a goal

[vhdgkl]

I can't understand why if a goal is scored, say in the 70th minute, and the odds at that time were @2, after the goal the odds for the next over are 20 30% higher... almost always.
why isn't it the same as before they scored (it doesn't change anything, or even a little, the score)?

yesterday for example the odds on a seventh goal in wrexham coventry was around @2.... coventry scores 3-4 in the 75th minute,the odds on the eighth goal was 2.3.
why?

I gave an example,but it's almost always like that.it makes no difference if it's the equalising goal,if it's the 3-0 goal,if it's the 3-4 goal

[BFDon]

I don't have the stats but presumably....time taken to restart game < time added on and possibly a natural momentary lull in the game once a goal is scored unless someone is chasing the game.

[GaryCook]

Maybe the price is still adjusting?