What is the difference between nonparametric and parametric statistics?

Chapter 15:
What is reliability and validity? What is the difference between reliability and validity?
Give an example of how reliability can be established in a quantitative research study.
Chapter 16:
(For this short answer portion, APA usage is not required)
State the level of measurement (nominal, ordinal, interval or ratio) for the following:
Pulse rate
Marital status
Number of years of education
Pain level
High school class ranking
Utilize APA for this portion
Differentiate between descriptive statistics and inferential statistics?
What is the difference between nonparametric and parametric statistics?
When are correlational statistics used?
Whbciat does statistically significant mean?

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