Breast cancer survival. A study of 1225 incident breast cancer cases found that survival varied greatly by

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Breast cancer survival. A study of 1225 incident breast cancer cases found that survival varied greatly by stage of disease at diagnosis.

The median 7-year survival rate for stage I breast cancer was 92%.

For stage II breast cancer, the 7-year survival rate was 71%. For stage II breast cancer, the survival rate was 39%. For stage IV, the survival rate was 11%. Say whether each of the boldface numbers in this exercise is a parameter or a statistic.

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