You can estimate the deadliness of each type of cancer by dividing the number of deaths by the number of cases. if nearly everyone who received a diagnosis of one particular type of cancer dies, the ratio will be near 1 (or 100% deadly). if many more people receive a diagnosis than die, the ratio will be near 0 (or 0% deadly).
using this criteria, which two forms of cancer listed are the deadliest? the least deadly? what is the overall ratio for all types of cancer? what does this tell you about cancer survivability in general?