Data items in which the true value is replaced by some other value. For example, suppose a set of components are being monitored to see how long they last before breaking. If the monitoring stops before all the components have broken, then the information concerning the lifetimes of the unbroken components has been right-censored. The score of a cricketer who is not out is an example of censored data, since it is not known what score would have been achieved if the cricketer's innings had been allowed to continue. In both cases the value used is the largest value so far achieved for that data item. To avoid bias, subsequent calculations should take account of the censoring.