title: A two-dimensional Kolmorogov-Smirnov test for binned data.
abstract: A new two-dimensional version of the Kolmorogov-Smirnov test has been developed for the testing of data which has been placed in a two-dimensional array of bins. Monte Carlo testing has been used to derive the test statistics for 8 x 8, 16 x 16 and 32 x 32 arrays. The predicted probabilities for non-square arrays and arrays with intermediate numbers of elements are compared to the probabilities derived from Monte Carlo testing. The new test is applied to two-dimensional histograms of movement vectors derived from electrical impedance images of the stomach.
authors.affiliation: Department of Medical Physics and Clinical Engineering, University of Sheffield, Royal Hallamshire Hospital, UK.
authors.forename: R H
authors.initials: RH
authors.lastname: Smallwood
mesh_terms: D006801:Humans; D009010:Monte Carlo Method; D019047:Phantoms, Imaging; D011336:Probability; D011859:Radiography / Q000379:methods*; D015203:Reproducibility of Results; D013270:Stomach / Q000000981:diagnostic imaging*; D014054:Tomography / Q000379:methods