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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

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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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