Please ensure that the Discussion includes more than 400 words with scholarly articles, and the plagiarism level must remain below 20%.

Every student will develop a discussion related to the four below week's objectives. 

You can choose any (ONLY ONE) and make a brief discussion:

1. Explain the relationship between variables and levels of measurement
2. Distinguish between categorical and continuous variables
3. Categorize variables according to the appropriate level of measurement
4. Differentiate between the reliability and validity of a measure
5. Evaluate the reliability and validity of a measure.