?Greetings, My dataset consist of the following columns: Specimen C_flex C_rigid tau_flex tau_rigid R_flex R_rigid1 0.1782 0.2975 0.3290 0.3223 0.4338 0.51002 0.0527 0.1097 0.1780 0.1038 0.2364 0.1086..... where C, tau and R are statistical metrics that asses the performance of a method in two modes, "flex" and "rigid. Essentially my data are paired, they consist of 18 specimens which were analysed twice by my method, once in "flex" mode and once in "rigid" mode, and I quantified the performance of each specimen in each mode using 3 statistical metrics (C, tau, R). What I want is to assess weather the overall performance of the method in the two modes ("flex", "rigid") is significantly different. Or in other words, whether the difference (C_flex, tau_flex, R_flex) vs (C_rigid, tau_rigid, R_rigid) is statistically significant. Could someone give a hint of what type of ANOVA I must use in R or point me to a relevant post? PS: the most relevant R tutorial I found was this: http://rtutorialseries.blogspot.cz/2011/02/r-tutorial-series-two-way-repeated.html The author's dataset is like this: subject schoolAge10 schoolAge15 schoolAge20 workAge10 workAge15 workAge201 1 5 5 3 1 3 52 2 5 5 3 1 3 5 But I am not sure whether he assess the significance of the difference (schoolAge10, schoolAge15, schoolAge20) vs (workAge10 workAge15, workAge20), or schoolAge10 vs workAge10 && schoolAge15 vs workAge15 && schoolAge20 vs workAge20. ? thanks in advance, Thomas [[alternative HTML version deleted]]