Nominal data can be defined as classified data in distinct categories in which no ranking is implied. In other words, the data will be assigned based on identification or classification. A nominal scale is the simplest type of scale arranged. In data analysis, this type of variable will be represented by a code number to differentiate the categorical values of the variable and contains no numerical value. Give the code number to represent the given categorical value of the following nominal variables:

1. State of origin in Malaysia (4 marks)
2. The month of birth (4 marks)
3. Level of academic that you obtained (4 marks)
4. Can all data be classified as nominal data? Suppose you are going to use data comprised of a code number representing an individual's perception of a certain opinion. Is this data still considered as nominal data? Give your reasons. (8 marks)