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What did people choose?

Before we fit a model, we want to get a sense for what people choose as a function of each product attribute. The best way to do this is to count how many times a car with a particular feature is chosen. In this exercise, we are going to focus on the transmission feature and count up the number of times chosen cars have manual transmissions versus automatic using the xtabs() function.

Bu egzersiz, kursun bir parçasıdır

Choice Modeling for Marketing in R

Kursa Göz Atın

Egzersiz talimatları

  • Change the formula in the xtabs() function to choice ~ trans, which means "sum up the choice variable for each level of the trans variable."
  • Print the chosen_by_trans table to the console by typing its name. How many times were cars with manual transmissions chosen versus automatic?
  • Plot the chosen_by_trans object using the barplot() function.

Uygulamalı etkileşimli egzersiz

Bu egzersizi bu örnek kodu tamamlayarak deneyin.

# Create a table of chosen sportscars by transmission type
chosen_by_trans <- xtabs(___, data = sportscar)

# Print the chosen_by_trans table to the console


# Plot the chosen_by_trans object
barplot(___)
Kodu Düzenle ve Çalıştır