This breast cancer database was obtained from the University of Wisconsin Hospitals, Madison from Dr. William H. Wolberg. He assessed biopsies of breast tumours for 699 patients up to 15 July 1992; each of nine attributes has been scored on a scale of 1 to 10, and the outcome is also known. There are 699 rows and 11 columns.
biopsyThis data frame contains the following columns:
IDsample code number (not unique).
V1clump thickness.
V2uniformity of cell size.
V3uniformity of cell shape.
V4marginal adhesion.
V5single epithelial cell size.
V6bare nuclei (16 values are missing).
V7bland chromatin.
V8normal nucleoli.
V9mitoses.
class"benign" or "malignant".
Venables, W. N. and Ripley, B. D. (1999) Modern Applied Statistics with S-PLUS. Third Edition. Springer.