deug {ade4} | R Documentation |

## Exam marks for some students

### Description

This data set gives the exam results of 104 students in the second year of a French University onto 9 subjects.

### Usage

data(deug)

### Format

`deug`

is a list of three components.

- tab
is a data frame with 104 students and 9 subjects : Algebra, Analysis, Proba, Informatic, Economy,
Option1, Option2, English, Sport.

- result
is a factor of 104 components giving the final exam levels (A+, A, B, B-, C-, D).

- cent
is a vector of required marks by subject to get exactly 10/20 with a coefficient.

### Source

University of Lyon 1

### Examples

data(deug)
# decentred PCA
pca1 <- dudi.pca(deug$tab, scal = FALSE, center = deug$cent, scan = FALSE)
if(adegraphicsLoaded()) {
g1 <- s.class(pca1$li, deug$result, plot = FALSE)
g2 <- s.arrow(40 * pca1$c1, plot = FALSE)
G <- superpose(g1, g2, plot = TRUE)
} else {
s.class(pca1$li, deug$result)
s.arrow(40 * pca1$c1, add.plot = TRUE)
}

[Package

*ade4* version 1.7-4

Index]