A) Discuss why the effect size is often requested when reporting hypothesis test results (provide a link to your source) Ans: Effect size supports p-values by demonstrating the data' practical significance in addition to their statistical significance. P-values indicate if an effect is present, but effect size indicates the magnitude of the effect. B) Discuss how your choice of factors influences the magnitude of (increases or decreases the value of) the effect size (provide a link to your source) Ans: Effect sizes are larger for stronger or more effective therapies and smaller for weaker or inconsistent interventions. C) Discuss how R-squared can be used as an effect size measure for simple linear regression (state the ranges and provide a link to your source) Ans: R2 shows the percentage of the dependent variable's variance that can be accounted for by the independent variable. * Tiny impact: 0.01 + 0.09 is the medium effect. * Big impact: 0.25 D) Discuss how correlation can be used as an effect size (state the ranges and provide a link to your source) Ans: The Relationship effect magnitude is directly reflected by correlation (r): Minimal: r = 0.10 * R = 0.30 Is the medium. * Large: r= 0.50 References: Simply Psychology. (2023, July 31). What does effect size tell you? https://www.simplypsychology.org/effect-size.html FAQ/effectSize - CBU statistics Wiki. (n.d.). https://imaging.mrc-cbu.cam.ac.uk/statswiki/FAQ/effectSize Review the Magnitudes of Effects Size article The magnitude of an effect size can be influenced by a number of factors. Select and ONE of the influencing factors below: 1) Sample size 2) Treatment or intervention effect 3) Measurement error 4) Study design DIRECTIONS: Answer the following. Be sure to include a source link for EACH as requested A) Discuss why the effect size is often requested when reporting hypothesis test results (provide a link to your source) B) Discuss how your choice of factors influences the magnitude of (increases or decreases the value of) the effect size (provide a link to your source) C) Discuss how R squared can be used a an effect size measure for simple linear regression (state the ranges and provide a link to your source) D) Discuss how correlation can be used as an effect size (state the ranges and provide link to your source) Quick Links CBSU Home Rules of thumb on magnitudes of effect sizes CBSU Intranet Wiki Overview The scales of magnitude are taken from Cohen, J. (1988). Statistical power analysis for the behavioral sciences (2nd Imaging Wiki ed.). Hillsdale, NJ: Lawrence Erlbaum Associates (see also ofhere). The scales of magnitude for partial we are taken MEG Wik from Table 2.2 of Murphy and Myors (2004). Bakker et al. (2019) note that contextual effect sizes should be used Methods Wiki wherever possible rather than 'canned" effects like Cohen's. Statistics wiki Navigate Wikis There is also a table of effect size magnitudes at the back of Kotrlik JW and Williams HA (2003) . here. An overview of commonly used effect sizes in psychology is given by Vacha-Haase and Thompson (2004). Whitehead, Julious, Cookies and Privacy Cooper and Campbell (2015) also suggest Cohen's rules of thumb for Cohen's d when comparing two independent FindPage groups with an additional suggestion of a d