Discussion – Variables, Z Scores, Population And Output

Discussion Thread: Variables, Z Scores, Population And Output (Quantitative Research Methods )

• Read: Morgan, Leech, Gloeckner, & Barrett: Chapter 3
• PageRead: Keller: Part II
• PageWatch: Introduction to Descriptive Statistics

DISCUSSION ASSIGNMENT INSTRUCTIONS
The student will complete Integrating Faith and Learning discussion. In the thread for each short-answer discussion the student will post short answers to the prompted questions. The answers must demonstrate course-related knowledge and support their assertions with scholarly citations in the latest APA format. Minimum word count for all short answers cumulatively is 200 words. The minimum word count for Integrating Faith and Learning discussion is 600 words. For each thread the student must include a title block with your name, class title, date, and the discussion forum number; write the question number and the question title as a level one heading (e.g. D1.1 Variables) and then provide your response; use Level Two headings for multi part questions (e.g. D1.1 & D1.1.a, D1.1.b, etc.), and include a reference section. The student must then post 1 reply to another student’s post. The reply must summarize the student’s findings and indicate areas of agreement, disagreement, and improvement. It must be supported with scholarly citations in the latest APA format and corresponding list of references. The minimum word count for Integrating Faith and Learning discussion reply is 250 words.

Discussion Thread: Variables, Z Scores, Population and Output

Respond to the following short answer questions from Chapter Three in the Morgan, Leech, Gloeckner, & Barrett textbook:

If you have categorical, ordered data (such as low income, middle income, high income) what type of measurement would you have? Why?

D2.3.2. (a) Compare and contrast nominal, dichotomous, ordinal, and normal variables. (b) In social science research, why isn’t it important to distinguish between interval and ratio variables?

D2.3.3. What percent of the area under the standard normal curve is within one standard deviation of (above or below) the mean? What does this tell you about scores that are more than one standard deviation away from the mean?

D2.3.4. (a) How do z scores relate to the normal curve? (b) How would you interpret a z score of –3.0? (c) What percentage of scores is between a z of –2 and a z of +2? Why is this important?

D2.3.5. Why should you not use a frequency polygon if you have nominal data? What would be better to use to display nominal data?

Explanation & Answer

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