Test for a difference in median test scores
The High School and Beyond survey is conducted on high school seniors by the National Center of Education Statistics. We randomly sampled 200 observations from this survey, and these data are in the hsb2 data frame (which is already loaded for you). Among other variables, this data frame contains scores on math and science scores of each sampled student.
Cet exercice fait partie du cours
Inference for Numerical Data in R
Exercice interactif pratique
Essayez cet exercice en complétant cet exemple de code.
# Add a column, diff, of math minus science
hsb2 <- hsb2 %>%
___