Essentially, the likelihood ratio test compares the ratio of likelihoods of the two models; on the log scale, the difference in log likelihood is taken. ... <看更多>

To calculate the likelihood ratio given the log-likelihoods, use this formula: from scipy.stats.distributions import chi2 def ... ... <看更多>

The point to understand about likelihood ratio tests is the statement in bold. The null hypothesis will always have a lower likelihood than the alternative. The ... ... <看更多>