Sales of Toyota Corona Cars. The file ToyotaCorolla.jmp contains data on used cars (Toyota Corollas) on sale during late summer of 2004 in the Netherlands. The data table has 1436 records containing details on 38 attributes, including Price, Age, Kilome~rs, HP, and some categorical. and dummy-coded variables. The ultimate goal will be to predict the price of a used Toyota Corolla based on its speci:fi.caIions. Although special coWng of categorical variables in JMP is generally not required. in this exercise we explore how to create dummy variables (and why).

A. Identify the categorical. variables.

b. Which variables have been dummy coded?

C. Consider the variable FuelJ'ype. How many binary dummy variables are required to capture the information for this variable?

d. Use the Make Indicator Variable option under Cola > Utilitie.J to convert the Fuel > Type into dummy variables, then change the Modeling Types for these dummy variables to Continous. Explain in words the values in the derived binary dummies.

Dataset download (https://www.mediafire.com/file/w7ek4h1alsf90e8/ToyotaCorolla.jmp/file)