deug {ade4}R Documentation

Exam marks for some students

Description

This data set gives the exam results of 118 students in the second year of a French University onto 8 subjects.

Usage

data(deug)

Format

deug is a list of three components.

    tab
    is a data frame with 118 students and 8 subjects.
    result
    is a factor of 118 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)
s.class(pca1$li, deug$result)
s.arrow(40 * pca1$c1, add.plot = TRUE)

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