search for: mu_c

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2018 Feb 02
1
R-gui sessions end when executing C-code
...N); n_prot++; PROTECT(H); n_prot++; PROTECT(K); n_prot++; int N_c = asInteger(N); int H_c = asInteger(H); int K_c = asInteger(K); double mu_c = asReal(mu); double mu2_c = 1.0 - mu_c; double error_c = asReal(err); double lowest_double = 1e-15; double tmp_c; double denom; double e...
2003 Mar 06
2
anova subhypotheses
Hello all, A really noddy question for you all: I''m trying without success to do some subhypothesis testing. Using simple anova model, with a toy dataset from a book. I have four factors A,B,C,D, and wish to test mu_C = mu_D. This is what I have tried: > contrasts(infants$group,how.many=1) <- c(0,0,1,-1) > contrasts(infants$group) [,1] A 0 B 0 C 1 D -1 > fit <- aov(age~group,data=infants) > summary(fit) Df Sum Sq Mean Sq F value Pr(>F) group 1 0...
2008 May 02
0
isotonic/ordered heterogeneity tests
dear R-help: one of my students is struggling to test an ordered alternative hypothesis on a set of groups (e.g., mu_a <= mu_b <= mu_c). There has been some literature on this topic -- a lot of this goes back to Bartholomew (1961); Gaines and Rice (see refs below) are the ones who've popularized it in the ecology community. The topic is closely related to isotonic regression, but all of the isotonic-regression stuff we've...