cumulative frequency table for the data values. (18 points-1 per box) This is a list of 30 grades in a math class. Create a relative frequency and A, A, A, A, A, A, B, B, B, B, B, B, C, C, C, C, C, C, C, C, C, C, D, D, D, D, D, F, F, F Relative frequency Grades A Frequency Cumulative frequency F D C B