The table gives the grouped frequency distribution for the lengths of the electrical cords of 80 kettles. Length, to the nearest cm 49-53 54-58 59-63 64-68 Number of kettles 7 37 33 3 Complete the cumulative frequency table. Length (cm) <48.5 <53.5 <58.5 <63.5 <68.5 Cumulative frequency 0 7 Cumulaüve Frequency View One Minute Version Overview​