Checking the constant variance condition
In addition to checking the normality of distributions of vocabulary scores across levels of social class, we need to check that the variances from each are roughly constant.
Questo esercizio fa parte del corso
Inference for Numerical Data in R
Istruzioni dell'esercizio
- Group by social class.
- Summarize to calculate the standard deviations of vocabulary scores, storing in a column named
std_dev_wordsum. - Verify the constant variance condition.
Esercizio pratico interattivo
Prova a risolvere questo esercizio completando il codice di esempio.
gss %>%
# Group by class
___ %>%
# Calculate the std dev of wordsum as std_dev_wordsum
____