Multi-level student data
Before using hierarchical models, explore the data with a plot and linear model. Plotting data gives you visual intuition and allows you to see potential trends or problems. Building a simple model provides a comparison to a hierarchical model. Building a simple linear model provides a starting place for hierarchical models and troubleshooting the linear model is quicker and simpler than a hierarchical model.
During this exercise, you will plot how a student's gain in math scores may be predicted by the teacher's math knowledge.
Это упражнение является частью курса
Hierarchical and Mixed Effects Models in R
Интерактивное практическое упражнение
Попробуйте выполнить это упражнение, дополнив этот пример кода.
# Plot the data
ggplot(data = ___, aes(x = ___, y = ___)) +
geom_point() +
geom_smooth(method = ___)