Construct a Frequency Distribution and Relative Frequency Distribution for the Test

Essay

Construct a frequency distribution and relative frequency distribution for the test grades for a university business statistics class, data given in the following table. Use seven class intervals. $$\begin{array} { | r | r | r | r | r | r | r | r | r | r | } \hline 63 & 74 & 42 & 65 & 51 & 54 & 36 & 56 & 68 & 57 \\\hline 62 & 64 & 76 & 67 & 79 & 61 & 81 & 77 & 59 & 38 \\\hline 84 & 68 & 71 & 94 & 71 & 86 & 69 & 75 & 91 & 55 \\\hline 48 & 82 & 83 & 54 & 79 & 62 & 68 & 58 & 41 & 47 \\\hline\end{array}$$