breastcancer: Data from the Original Wisconsin Diagnostic Breast Cancer...
In HDSinRdata: Data for the 'Mastering Health Data Science Using R' Online Textbook

breastcancer

R Documentation

Data from the Original Wisconsin Diagnostic Breast Cancer Database

Description

32 features of cell nuclei present in digitized images of fine needle aspirates of 212 malignant and 357 benign breast masses.

Usage

breastcancer

Format

A data frame with 569 rows and 32 variables. The first two variables are id and diagnosis, and then the mean, standard error, and "worst" or largest (mean of the three largest values) for each of ten features are reported as follows:

id: ID number
diagnosis: Diagnosis (M = malignant, B = benign)
radius_mean: Mean of mean distances from center to points on the perimeter
texture_mean: Mean of standard deviation of gray-scale values
perimeter_mean: Mean of perimeter
area_mean: Mean of area
smoothness_mean: Mean of local variation in radius lengths
compactness_mean: Mean of perimeter^2 / area - 1.0
concavity_mean: Mean of severity of concave portions of the contour
concave_points_mean: Mean of number of concave portions of the contour
symmetry_mean: Mean of symmetry
fractal_dimension_mean: Mean of "coastline approximation" - 1
radius_se: Standard error of mean distances from center to points on the perimeter
texture_se: Standard error of standard deviation of gray-scale values
perimeter_se: Standard error of perimeter
area_se: Standard error of area
smoothness_se: Standard error of local variation in radius lengths
compactness_se: Standard error of perimeter^2 / area - 1.0
concavity_se: Standard error of severity of concave portions of the contour
concave_points_se: Standard error of number of concave portions of the contour
symmetry_se: Standard error of symmetry
fractal_dimension_se: Standard error of "coastline approximation" - 1
radius_worst: "Worst" or largest (mean of the three largest values) of mean distances from center to points on the perimeter
texture_worst: "Worst" or largest (mean of the three largest values) of standard deviation of gray-scale values
perimeter_worst: "Worst" or largest (mean of the three largest values) of perimeter
area_worst: "Worst" or largest (mean of the three largest values) of area
smoothness_worst: "Worst" or largest (mean of the three largest values) of local variation in radius lengths
compactness_worst: "Worst" or largest (mean of the three largest values) of perimeter^2 / area - 1.0
concavity_worst: "Worst" or largest (mean of the three largest values) of severity of concave portions of the contour
concave_points_worst: "Worst" or largest (mean of the three largest values) of number of concave portions of the contour
symmetry_worst: "Worst" or largest (mean of the three largest values) of symmetry
fractal_dimension_worst: "Worst" or largest (mean of the three largest values) of "coastline approximation" - 1