Answer or define each term using the provided material (PDF book). Also, use two extra sources of your choice to complete the assignment. Here is the reference for the PDF in APA format “Walker, J. (2009). Statistics in criminology and criminal justice (4th ed.). Sudbury, MA: Jones and Bartlett”. The whole assignment must total a minimum of 1,200 words.
1. Define the term nominal variable and provide an example not included in the text.
2. Define the term ordinal variable and provide an example not included in the text.
3. Define the term interval variable and provide an example not included in the text.
4. Define the term ratio variable and provide an example not included in the text.
5. Why are the levels of variables important?
6. For the variable arrest, please state the level of measurement (nominal, ordinal, interval or ratio) and explain why you believe this would be the correct level.