univariate clustering when to use interrival time how is univariate clustering performed why is univariate clustering useful for cancer screening what model determines the density of interrival times how is the interrival time measured why are univariate clustering methods used how is interrival time model used why use markov model which of the following measures is used to determine interrival times? which factor is important determining if someone will screen for cancer why are clusters used to determine interrival time why is interrival time important what is univariate clustering which is more complex markov or unsupervised learning how is interrival times determined how do clusters of times series differ how to model interarrival times which of the following is a characteristic of clustering? quizlet how to determine interrival times