Predicting with glm()
Data scientists often use models to predict future situations. GLMs are one such tool and, when used for these situations, they are sometimes called supervised learning.
For this exercise, you will predict the expected number of daily civilian fire injury victims for the North American summer months of June (6), July (7), and August (8) using the Poisson regression you previously fit and the new_dat
dataset.
Recall that the Poisson slope and intercept estimates are on the natural log scale and can be exponentiated to be more easily understood.
You can do this by specifying type = "response"
with the predict function.
This exercise is part of the course
Generalized Linear Models in R
Exercise instructions
- Print
new_dat
to see your new prediction situation. - Use the fit Poisson regression,
poisson_out
as the object andnew_dat
as the new data inpredict()
. Be sure to exponentiate your output by settingtype = "response"
. Save the results aspred_out
. - Print
pred_out
.
Hands-on interactive exercise
Have a go at this exercise by completing this sample code.
# print the new input months
print(___)
# use the model to predict with new data
___ <- predict(object = ___, newdata = ___, type = "response")
# print the predictions
print(___)