Double galaxy redshifts and the statistics of small numbers

Details Double galaxy redshifts and the statistics of small numbers Double galaxy redshifts and the statistics of small numbers

Sep 1989

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1989apj...344..111n&link_type=abstract

Astrophysical Journal, Part 1 (ISSN 0004-637X), vol. 344, Sept. 1, 1989, p. 111-114. Research supported by the John Simon Guggen

Statistics

27

Interacting Galaxies, Red Shift, Monte Carlo Method, Random Noise, Velocity Distribution

Scientific paper

Tifft (1980, 1982) claimed that observations of double galaxies reveal a 72 km/s periodicity. Sharp showed that the 'periodicities' in the observations are completely consistent with the statistics of small numbers. Here it is shown that Tifft's statistical procedure would ascribe a periodicity to small sets of Gaussian random noise. Satisfying the null hypothesis that the observations are not samples drawn from a normal population would require the acquisition of at least an order of magnitude more data.

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