aids data frame has 4 rows and 4 columns.
On February 15, 1991, the New York Times published the results of a study on the presence of AIDS symptoms and AZT use. The data were cross-classified according to the race of the patients.
This data frame contains the following columns:
the number of patients with AIDS symptoms;
the number of patients without AIDS symptoms;
an indicator variable for AZT use;
an indicator variable for the race (
The data were obtained from the New York Times (2/15/91).
yes no azt race Min. :11.00 Min. :43.00 no :2 b:2 1st Qu.:11.75 1st Qu.:49.75 yes:2 w:2 Median :13.00 Median :66.50 Mean :17.25 Mean :67.25 3rd Qu.:18.50 3rd Qu.:84.00 Max. :32.00 Max. :93.00
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