Write an Appropriate Set of Class Intervals That Could Be

Essay

Write an appropriate set of class intervals that could be used for a grouped frequency distribution for the scores below. $$\begin{array} { l l l l l l l l l l l l l } 28 & 68 & 54 & 47 & 39 & 52 & 71 & 16 & 18 & 39 & 70 & 44 & 39 \\27 & 31 & 62 & 48 & 53 & 37 & 21 & 47 & 62 & 12 & 28 & 21 & 47 \\52 & 74 & 29 & 69 & 25 & 68 & 11 & 55 & 72 & 36 & 50 & 44 & 47 \\49 & 62 & 57 & 39 & 21 & 42 & 57 & 69 & 75 & 19 & 60 & 47 & 35 \\55 & 61 & 43 & 72 & 61 & 27 & 43 & 50 & & & & &\end{array}$$