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.
Este ejercicio forma parte del curso
Inference for Numerical Data in R
Instrucciones del ejercicio
- 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.
Ejercicio interactivo práctico
Prueba este ejercicio y completa el código de muestra.
gss %>%
# Group by class
___ %>%
# Calculate the std dev of wordsum as std_dev_wordsum
____