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I'm analyzing some out of range values that are either really high (above the 99.9th percentile) or really low (below the 0.1st percentile). How would you pronounce 0.1st percentile?

ddx
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    I'd say the "zero point one'th percentile" (as opposed to "zero point first") – Ben Grossmann May 21 '20 at 02:22
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    I’d say zero point first percentile or use a paraphrase of some kind, e.g., in the bottom tenth of a percent. (There is no way on earth that I’d combine the cardinal number one with the ordinal suffix -th.) – Brian M. Scott May 21 '20 at 02:30
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    Let’s have a fight, @BrianM.Scott . I always write “$(n-1)$-th” and read it “$n$ minus one’th”. But I emphatically agree with you on the virtue of paraphrase in this case. – Lubin May 21 '20 at 03:01
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    @Lubin: And I always write ‘$(n-1)$-st’ and read it ‘$n$ minus first’. :-) – Brian M. Scott May 21 '20 at 03:07
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    First tenth of a percentile (and 99.9 becomes the last tenth percentile correspondingly). :) – postmortes May 21 '20 at 06:46
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    Why is everyone answering the poster's question in the comments? – cebroski May 24 '20 at 01:32

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