10 Jun
2016
10 Jun
'16
3:40 p.m.
On 6/10/2016 12:09 PM, Victor Stinner wrote:
2016-06-10 17:09 GMT+02:00 Paul Moore <p.f.moore@gmail.com>:
Also, the way people commonly use micro-benchmarks ("hey, look, this way of writing the expression goes faster than that way") doesn't really address questions like "is the difference statistically significant".
If you use the "python3 -m perf compare method1.json method2.json", perf will checks that the difference is significant using the is_significant() method: http://perf.readthedocs.io/en/latest/api.html#perf.is_significant "This uses a Student’s two-sample, two-tailed t-test with alpha=0.95."
Depending on the sampling design, a matched-pairs t-test may be more appropriate. -- Terry Jan Reedy