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Yeah. I agree. This subject is just not worth bothering with.
yes, Carl, good thinking, before using a stat one must ensure there's no sources of systematic error. However, there is none in our case. Consider this: when someone wins 4-0 they also probably win a majority of their own serve points as well, don't they? I do stats for a living and these sorts of things become immediately obvious after a while.As far as the serve advantage in a particular tournament, part of why it is hard to judge that is disparity in player levels.
When ML or FZD play someone where they Win 4-0 -2, -3, -2,-1 they probably won a majority of their opponent’s serve points.
Rio used a sample of 7000 points for men's game and another 6500 points for women's (which if you add them together budge the percentages to 52.9%) for the total of 13500 points - that's well above what a statistician would usually ask for. These numbers are solid and would be replicated in any tournament at the highest level.
More tidbits: Ma Long, the winner of men's singles event, had 51% of all points scored come from his serves. Ding Ning, the winner of women's singles and a formidable server, achieved a whopping figure of 54.9%. Food for thought.
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