A new idea for treating advanced melanoma, the most serious kind of skin cancer,

Question

A new idea for treating advanced melanoma, the most serious kind of skin cancer, is to genetically engineer white blood cells to better recognize and destroy cancer cells, then infuse these white blood cells into patients. The subjects in a small initial study were 11 patients whose melanoma had not responded to existing treatments. One question to consider in the study was how rapidly the new cells would multiply after infusion, as measured by the doubling time in days. Another outcome for study was the increase in the presence of cells that trigger an immune response in the body and may help fight cancer, measured in counts of active cells per 100,000 cells. Here are stem-and-leaf plots of the two response variables.

The median doubling time is

a. 10 days.

b.  6 days.

c.  1.2 days.

d.  1.0 days.

Explanation / Answer

Given data

given n=11

median= (n+1)/2 observation =12/2 =6th item =100 =10days

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