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.
This exercise is part of the course
Introduction to Regression in R
Exercise instructions
- Extend the plotting code to include the point predictions in
prediction_data. Color the points yellow.
Hands-on interactive exercise
Have a go at this exercise by completing this sample code.
# 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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