Evaluation is one major step of an IR process. It helps to classify and compare Information Retrieval (IR) systems according to their effectiveness or their e ciency. Many IR works carried different kinds of studies about evaluation methods and many evaluation measures have been proposed. Most of these measures are based on the ranking of documents retrieved by IR systems in response to queries. The retrieved documents are ranked according to their retrieval status values if these are monotonously increasing with the probability of relevance of documents. However, few IR works tried to know more about these RSV and their possible use for IR evaluation. In this work, we analyze different RSV computations and investigate the links between the RSVs and the IR systems evaluation.