hods . It's introduction with some of the definations given by scientists , other two parts are median and mean uploded with their defination , history , types examples and question papers . This is very important topic of biostatistics summing up with it's disruptive and discipline explanation . The mode of a set of data values is the value that appears most often. If X is a discrete random variable, the mode is the value x at which the probability mass function takes its maximum value. In other words, it is the value that is most likely to be sampled