Poisson-Pearson formula
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Pois·son-Pear·son for·mu·la
(pwah-son[h]' pēr'sŏn),a formula to determine the statistical error in calculating the endemic index of malaria: let N = total number of children under 15 years in a locality; n = total number examined for the spleen-rate; x = number found with enlarged spleen; (x/n)100 = spleen-rate; e% = percentage of error; the percentage error will be, by this formula: 
Pearson,
Karl, English mathematician, 1857-1936.McArdle-Schmid-Pearson disease - Synonym(s): McArdle syndrome
Poisson-Pearson formula - see under Poisson
Poisson,
Siméon Denis, French mathematician, 1781-1840.Poisson distribution - a discontinuous distribution important in statistical work.
Poisson ratio
Poisson-Pearson formula - to determines the statistical error in calculating the endemic index of malaria.