Certified Tumor Registrar (CTR) Practice Exam

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Given the ages of patients diagnosed with osteosarcoma: [5, 7, 10, 12, 12, 14, and 17], what is the mean of this data set?

The correct answer is: 11

To find the mean of the ages of patients diagnosed with osteosarcoma, you first need to sum all the ages and then divide that sum by the number of ages. The ages provided are: 5, 7, 10, 12, 12, 14, and 17. First, you can calculate the total sum of these ages: 5 + 7 + 10 + 12 + 12 + 14 + 17 = 77 Next, count how many ages there are in the dataset. In this case, there are 7 ages. To find the mean, divide the total sum by the number of values: 77 (total sum) ÷ 7 (number of values) = 11 Thus, the mean age of the patients diagnosed with osteosarcoma in this dataset is 11. This correctly corresponds to the right choice. The determination of the mean is critical in a clinical context as it helps provide insights into the age distribution of patients affected by certain types of cancer, which can influence treatment planning and patient management strategies.