The following scores were obtained by a college sophomore class on an English exam:

$\backslash$table$[[60,94,75,82,72,57,92,75,85,77,91],[72,85,64,78,75,62,49,70,94,72,84],[55,90,88,81,64,91,79,66,68,67,74],[45,76,73,68,85,73,83,85,71,87,57],[82,78,68,70,71,78,69,98,65,61,83],[84,69,77,81,87,79,64,72,55,76,68],[93,56,67,71,83,72,82,78,62,82,49],[63,73,89,78,81,93,72,76,73,90,76]]$

a$.$ Construct a frequency distribution of the ungrouped scores