Visualizing predictions
The prediction data you calculated contains a column of explanatory variable values and a column of response variable values. That means you can plot it on the same scatter plot of response versus explanatory data values.
prediction_data is available and ggplot2 is loaded. The code for the scatter plot with linear trend line you drew in Chapter 1 is shown.
Deze oefening maakt deel uit van de cursus
Introduction to Regression in R
Oefeninstructies
- Extend the plotting code to include the point predictions in
prediction_data. Color the points yellow.
Praktische interactieve oefening
Probeer deze oefening eens door deze voorbeeldcode in te vullen.
# Add to the plot
ggplot(taiwan_real_estate, aes(n_convenience, price_twd_msq)) +
geom_point() +
geom_smooth(method = "lm", se = FALSE) +
# Add a point layer of prediction data, colored yellow
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