What is the average acceleration?

[InSpiRatioNy]

Homework Statement

I'ts part of a bigger problem, but this is all the info given.
http://img238.imageshack.us/img238/7923/chartro3.jpg

Homework Equations

I'm doing an experimental error calculation, and that equation wouldn't relevant, but that's the only one I got.

The Attempt at a Solution

I wanted to slowly minus them together, but it would take really long since there are 12 points, there must be a shorter way, and the margin given for it (it is generally expected to fit) is too small to contain that much work.

 

[Redbelly98]

... that equation wouldn't relevant, but that's the only one I got.

I'm having trouble understanding what you are trying to do. For example, that statement makes no sense to me. I see no equation in your post or the link you gave.

 

[thomate1]

The average acceleration can be calculated by taking the change in velocity over the change in time. In this case, since the graph shows the velocity over time, we can use the slope of the line to determine the average acceleration. This can be done by selecting two points on the line and using the formula: (change in velocity)/(change in time). The average acceleration can also be found by taking the area under the curve and dividing it by the total time. If the graph is not a straight line, the average acceleration can be found by taking the slope of the secant line between the two points and averaging them.