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Week 6 Discussion

DQ1 Nominal Ordinal Interval Ratio Statistics Search

Conduct a Web search on this phrase: “nominal ordinal interval ratio statistics.” Identify two Web sites that give good information (as compared to your textbook) on statistics that are appropriate for each of the four main levels of measurement. List those websites on the discussion board and describe them. Then, compare the Web sites you chose with a classmate. Who chose the ‘better’ sites?

DQ2 Reliability

Observation can be a subjective form of measurement. The Liaw et al. (2009) study is attached below. To overcome the potential for error, Liaw et al. developed a protocol for the observations of nurses’ care-giving activities with preterm infants. Identify at least four things that the researchers did to strengthen the reliability of the observational measurements.

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