an error message always appear when I try to load data=nc

General
1

nc = read.csv("https://www.openintro.org/stat/data/csv/ncbirths.csv")

nc = subset(nc, is.na(marital) == FALSE)

library(mosaic)
Le chargement a nécessité le package : ggformula
Error: package or namespace load failed for ‘ggformula’ in loadNamespace(i, c(lib.loc, .libPaths()), versionCheck = vI[[i]]):
aucun package nommé ‘stringi’ n'est trouvé
Erreur : le package ‘ggformula’ ne peut être chargé

tally(~ marital + lowbirthweight, data=nc)
Error in tally(~marital + lowbirthweight, data = nc) :
argument inutilisé (data = nc)

an error message always appear when I try to load data=nc
can someone tell me what to do

2

It looks like not all of the packages required for mosaic were installed. Try running

install.packages("ggformula")

You might also have to do

install.packages("stringi")

Finally, the tally function I am familiar with is not used in the way you are using it. From what package does tally come?

3

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