Muriel Bristol

B. Muriel Bristol-Roach (21 April 1888 – 15 March 1950), Ph.D., was an algologist who worked at the Rothamsted Experimental Station in 1919. Her research focused on the mechanisms by which algae acquire nutrients.

In addition to her scientific work, she was the woman whose claim to be able to tell whether the milk or the tea was poured into a cup first prompted Ronald Fisher to devise Fisher's exact test to assess the statistical significance of such claims; see lady tasting tea. The test was actually performed, and Bristol-Roach successfully identified "more than enough ... to prove her case".

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