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Breast Cancer Wisconsin (Original) Data Set

Source: R/bcw_original_docs.R
bcw_original.Rd

Samples arrive periodically as Dr. Wolberg reports his clinical cases. The database therefore reflects this chronological grouping of the data.

Usage

bcw_original

Format

A data frame with 699 observations on the following 11 variables.

  • sample_code_number: id number

  • clump_thickness: 1 - 10

  • uniformity_of_cell_size: 1 - 10

  • uniformity_of_cell_shape: 1 - 10

  • single_epithelial_cell_size: 1 - 10

  • bare_nuclei: 1 - 10

  • bland_chromatin: 1 - 10

  • normal_nucleoli: 1 - 10

  • mitoses: 1 - 10

  • class: 2 for benign, 4 for malignant

Source

Dr. William H. Wolberg - Physician University of Wisconsin Hospitals Madison, Wisconsin, USA

Details

This grouping information appears immediately below, having been removed from the data itself:

GroupInstancesDate of Collection
1367January 1989
270October 1989
331February 1990
417April 1990
548August 1990
649Updated January 1991
731June 1991
886November 1991
Total699 points15 July 1992

Note that the results summarized above in Past Usage refer to a dataset of size 369, while Group 1 has only 367 instances. This is because it originally contained 369 instances; 2 were removed.

References

https://archive.ics.uci.edu/ml/machine-learning-databases/breast-cancer-wisconsin/breast-cancer-wisconsin.data