As of 2011, the following are the ages at which a country's presidents were inaugurated. 57,61,57,57,58,57,61,54,68,51,49,64 ,50,48,65,52,56,4654,49,50,47,55,55 ,54,42,51,56,55,51,54,51,60,62,43,5 556,61,52,69,64,46,54,47construct a grouped frequency distribution for the data. use 41 - 45 for the first class and use the same width for each subsequent class.