Chest pain value (ca) - Chest pain value is an attribute that measures
what type of chest pain the patient is experiencing. The attributes has four values
representing four types of chest pain: typical angina, atypical angina, non-anginal,
asymptomatic. When looking at the data set, all instances consisted of value 1,
typical angina. Although this is relevant to note, this attribute did not need to be
represented in our data set, as it would not a!ect the results.