Certain kinds of tumors tend to recur. The following frequency table represents the lengths of time, in months, for a tumor to recur after chemotherapy E. for 45 cases. Time(in months) 0-12 12-24 24-36 36-48 48-60 O 11.99% 16.66% O 22.22% # of tumors The percentage of tumors that tend to recur between 12 and 24 months is 14.44% 10 5 15

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