Chebyshev's inequality

/ ˈtʃɛbɪˌʃɒfs /

noun

1. statistics the fundamental theorem that the probability that a random variable differs from its mean by more than k standard deviations is less than or equal to 1/ k ²

Word History and Origins

Origin of Chebyshev's inequality¹

named after P. L. Chebyshev (1821–94), Russian mathematician