I've got a relatively little (~100 values) set of integers: each of them represents how much time (in millisecond) a test I ran lasted.
The trivial algorithm to calculate the average is to sum up all the n values and divide the result by n, but this doesn't take into account that some ridiculously high/low value must be wrong and should get discarded.
What algorithms are available to estimate the actual average value?
As you said you can discard all values that diverge more than a given value from the average and then recompute the average. Another value that can be interesting is the Median, that is the most frequent value.