Summarize the four levels of measurement first proposed by Stevens in 1951. Explain how knowing the level of measurement for variables helps a researcher examine outcomes in a study. Diagram the relationship of precision and levels of measurement. 525 words with one reference:
Distinguish qualitative research methods from those categorized as quantitative methods. Outline what types of questions qualitative research addresses that cannot be addressed by quantitative research.
Salkind, N. J. (2012). Exploring Research. (5th ed.). Pearson Prentice Hall.