The term grouped data refers to the case where the exact value of the characteristic of interest is either unknown or difficult to register. In the present article we study a model that can be used for the simultaneous control of two (possibly correlated) variables whose values have been...

In Multiple Failure Mode systems (MFM systems) each component may either work or experience one of m=2 different failure modes. This work presents a lower product-type bound for the MFM system's reliability function, using the theory of stochastic ordering. Numerical calculations are also...