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# Part 1 and Part 2 must be at least 150 - 200 words unless otherwisePart 1: Effect Sizes and Confidence Intervals For this discussion, begin by reviewing the techniques of effect sizes and confidence

**Part 1 and Part 2 must be at least 150 - 200 words unless otherwise**

**Part 1: Effect Sizes and Confidence Intervals **

For this discussion, begin by reviewing the techniques of effect sizes and confidence intervals in your textbook. Then, keeping these techniques in mind, read the following quotes:

· “Statistics are no substitute for judgment.”—Henry Clay

· “To not look at the data is foolish, but to look at the data as having all the answers is even more foolish. It is a collision of new-school statistics and statisticians against old-school managers, coaches, and instructors. Neither side is right, neither is wrong; there is so much to be gained from listening to both sides.”—Tim Kurkjian, I’m Fascinated by Sacrifice Flies: Inside the Game We All Love(2016)

· “It ain’t what you don’t know that gets you into trouble. It’s what you know for sure that just ain’t so.”—Mark Twain

· “Good statistical inference never strays very far from the data.”—Brian S. Yandell (2007)

· “An approximate answer to the right problem is worth a good deal more than an exact answer to an approximate problem.”—John Tukey

https://www.goodreads.com/quotes/search?utf8=%E2%9C%93&q=statistics&commit=Search

Based on the above quotes, along with this week’s assigned readings and Instructor Guidance, discuss the importance of effect sizes and confidence intervals in research.

**Part 2: Examples of Effect Sizes and Confidence Intervals in Research**

Locate an example of a research study that uses effect sizes and confidence intervals in its analysis. Explain what these have allowed the researchers to accomplish and/or conclude in the study.

**Required Resource**

**Text**

Lind, D. A., Marchal, W. G., & Wathen, S. A. (2017). Statistical techniques in business and economics. (17th ed.). Retrieved from http://connect.mheducation.com/class/

Link to text: https://drive.google.com/file/d/0B2z1XRpzFSVfZ3ZkbWdsUk1lMzg/view?usp=sharing

· Chapter 9: Estimation and Confidence Intervals

· Chapter 10: One-Sample Tests of Hypothesis

· Chapter 11: Two-Sample Tests of Hypothesis

· Chapter 12: Analysis of Variance

· Chapter 13: Correlation and Linear Regression

· Chapter 15: Nonparametric Methods: Nominal Level Hypothesis Tests