diff --git a/module2/exo4/sample.Rdata b/module2/exo4/sample.Rdata new file mode 100644 index 0000000000000000000000000000000000000000..35ef361887cbc23c63639c480e44b6addd673ad6 Binary files /dev/null and b/module2/exo4/sample.Rdata differ