likeratio | R Documentation |
likeratio conducts a likelihood ratio test on two negative log-likelihoods. It produces the LR plus related statistics detailing if a significant difference has been found. The order in which the log-likelihoods are entered does not matter as that is checked for so a positive likelihood ratio is always generated.
likeratio(nLL1, nLL2, df = 1)
nLL1 |
the first -ve log-likelihood |
nLL2 |
the second -ve log-likelihood |
df |
the number of degrees of freedom difference between the two model, a minimum of 1, which is the default. |
a vector of the likelihood ratio, the significance of any difference, the minimum difference required for significance, and the degrees of freedom.
one <- 291.1691
two <- 277.0122
dof <- 1
round(likeratio(one,two,dof),8) # LR = 28.3138
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