How you do this depends on what you know.
Originally Posted by MikeChch
You start with the null hypothesis that there is no connection between the contribution and the starting total.
Now you have a data set and you need to construct a test to see if the null hypothesis can be rejected (I would use a non-parametric test myself, but what you use depends on what you know).
Example: The data below is sorted by starting total:
If there is no relation between the two columns then the number of entries in the first five positions in the first column less than 100000 is a binomial RV . We actually observe , so we can ask what the probability of observing or more is .
Contribution Jackpot starting total