D​‌‍‍‍‌‍‍‍‌‍‍‍‌‌‌‌‌‌‍‍​iscussion Assignment 1. Justify your answers with examples and reasoning. 2. see attached grading Rubric for this paper 3. Provide a substantive initial discussion post. 4. Justify your answers with examples and reasoning. 5. Comment on the initial postings of at least three peers’ reviewed articles no older than 5 years old. To support your work as in all assignments, cite your sources in your work and provide references for the citations in APA format. 2. Course text book: Rosner, B. (2015).

Fundamentals of Biostatistics (8th ed.). Cengage Learning US. Coefficient of Determination The purpose of this assignment is to learn about the coefficient of determination (R2) statistic as a measure of the fit of a regression line. R2 is a statistical measure of how close the data are to a fitted regression line. In general, the higher the R2, the better t​‌‍‍‍‌‍‍‍‌‍‍‍‌‌‌‌‌‌‍‍​he model fits your data.

However, while R2 measures goodness of fit, it does not indicate whether a regression model is adequate. You can have a low R2 value for a good model or a high R2 value for a model that does not fit the data. Using the South University Online Library, the Internet, and your text readings, research about R2. On the basis of your research and your involvement in public health functions, respond to the following: • Find and state a definition of R2 that you feel is easy to understand. • In your own words, provide a substantive explanation of what R2 represents. • Explain what the statistic R2 is used for in regression analysis.

• Explain how R2 is affected by sample size. • Describe whether a large R2 value means that a regression is significant. Provide reasons for your answer. • Describe how you would substantivel​‌‍‍‍‌‍‍‍‌‍‍‍‌‌‌‌‌‌‍‍​y interpret R2.

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