This document outlines an assignment to summarize key differences in measurement and observation, the four levels of measurement (nominal, ordinal, interval, and ratio), and why knowing the measurement level is important for variables in a study. It also asks to describe two techniques to improve validity and reliability of variable measurement.

1. The assignment (2
pages in APA format):
Explain differences between measurement and observation.
Explain differences between the four levels of measurement:
nominal, ordinal, interval, and ratio.
Explain why it is important to know the level(s) of measurement
for variables in a study.
Describe two techniques that may be used to improve the
validity and reliability of variable measurement