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An industrial/organizational psychologist has been consulting with a company that runs weekend job-seeking workshops for the unemployed. She collected data on several issues related to these workshops and, after conducting statistical tests, obtained statistically significant findings. She needs to find a way to evaluate effect size so that she can make recommendations to the company. One of the psychologist's findings is that six months after the workshop, a sample of 81 job seekers who received training on resume writing worked more than 30 hours per week an average of 8.7 months in the last year, with a standard deviation of 4.1. The typical job seeker works 7.4 months. The psychologist finds that the estimated Cohen's d is 2.853 the t statistic is 2.83, and r2 is 0.091

An industrial/organizational psychologist has been consulting with a company that runs weekend job-seeking workshops for the unemployed. She collected data on several issues related to these workshops and, after conducting statistical tests, obtained statistically significant findings. She needs to find a way to evaluate effect size so that she can make recommendations to the company. One of the psychologist's findings is that six months after the workshop, a sample of 81 job seekers who received training on resume writing worked more than 30 hours per week an average of 8.7 months in the last year, with a standard deviation of 4.1. The typical job seeker works 7.4 months. The psychologist finds that the estimated Cohen's d is 2.853 the t statistic is 2.83, and r2 is 0.091

Glencoe Algebra 1, Student Edition, 9780079039897, 0079039898, 2018
Glencoe Algebra 1, Student Edition, 9780079039897, 0079039898, 2018
18th Edition
ISBN:9780079039897
Author:Carter
Publisher:Carter
Chapter4: Equations Of Linear Functions
Section4.5: Correlation And Causation
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Attempts: Keep the Highest: /3 7. Effect size - Cohen's d and r squared An industrial/organizational psychologist has been consulting with a company that runs weekend job-seeking workshops for the unemployed. She collected data on several issues related to these workshops and, after conducting statistical tests, obtained statistically significant findings. She needs to find a way to evaluate effect size so that she can make recommendations to the company. One of the psychologist's findings is that six months after the workshop, a sample of 81 job seekers who received training on resume writing worked more than 30 hours per week an average of 8.7 months in the last year, with a standard deviation of 4.1. The typical job seeker works 7.4 months. The psychologist finds that the estimated Cohen's d is 2.853 v the t statistic is 2.83, and r² is 0.091 Using Cohen's d and Cohen's guidelines for interpreting the effect size with the estimated Cohen's d, there is a treatment effect. Using r2 and the extension of Cohen's guidelines for interpreting the effect size using r2, there is a treatment effect. (Hint: When using Cohen's guidelines for interpreting the effect size, if the value lies between two categories, then specify the range covered by both categories, for example, medium to large.) Another one of the psychologist's findings is that a sample of 81 job seekers who received training on dressing for interviews scored an average of 8.1 as measured on a 9-point job search motivation scale, with a standard deviation of 0.8. The typical job seeker scores 7.4 points. She finds that the estimated Cohen's d is the t statistic is 7.78, and r2 is Using Cohen's d and Cohen's guidelines for interpreting the effect size with the estimated Cohen's d, there is a v treatment effect. Using r2 and the extension of Cohen's guidelines for interpreting the effect size with r2, there is a v treatment effect.
Transcribed Image Text:Attempts: Keep the Highest: /3 7. Effect size - Cohen's d and r squared An industrial/organizational psychologist has been consulting with a company that runs weekend job-seeking workshops for the unemployed. She collected data on several issues related to these workshops and, after conducting statistical tests, obtained statistically significant findings. She needs to find a way to evaluate effect size so that she can make recommendations to the company. One of the psychologist's findings is that six months after the workshop, a sample of 81 job seekers who received training on resume writing worked more than 30 hours per week an average of 8.7 months in the last year, with a standard deviation of 4.1. The typical job seeker works 7.4 months. The psychologist finds that the estimated Cohen's d is 2.853 v the t statistic is 2.83, and r² is 0.091 Using Cohen's d and Cohen's guidelines for interpreting the effect size with the estimated Cohen's d, there is a treatment effect. Using r2 and the extension of Cohen's guidelines for interpreting the effect size using r2, there is a treatment effect. (Hint: When using Cohen's guidelines for interpreting the effect size, if the value lies between two categories, then specify the range covered by both categories, for example, medium to large.) Another one of the psychologist's findings is that a sample of 81 job seekers who received training on dressing for interviews scored an average of 8.1 as measured on a 9-point job search motivation scale, with a standard deviation of 0.8. The typical job seeker scores 7.4 points. She finds that the estimated Cohen's d is the t statistic is 7.78, and r2 is Using Cohen's d and Cohen's guidelines for interpreting the effect size with the estimated Cohen's d, there is a v treatment effect. Using r2 and the extension of Cohen's guidelines for interpreting the effect size with r2, there is a v treatment effect.
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