Special Events (continued) >Mutually exclusive events Two events cannot occur together e.g.:--A:queen of diamonds;B:queen of clubs -Events a and B are mutually exclusive >Collectively exhaustive events One of the events must occur The set of events covers the whole sample space e.g.:--A:all the aces;B:all the black cards;C:all the diamonds;D: all the hearts -Events A,B,C and D are collectively exhaustive Events B,C and D are also collectively exhaustive Statistics for Ma agers Using Microsoft Excel Chap 4-10 Tongji University,School of Economics ManagementStatistics for Managers Using Microsoft Excel Chap 4-10 Tongji University, School of Economics & Management Special Events  Mutually exclusive events  Two events cannot occur together  e.g.: -- A: queen of diamonds; B: queen of clubs  Events A and B are mutually exclusive  Collectively exhaustive events  One of the events must occur  The set of events covers the whole sample space  e.g.: -- A: all the aces; B: all the black cards; C: all the diamonds; D: all the hearts  Events A, B, C and D are collectively exhaustive  Events B, C and D are also collectively exhaustive (continued) A B