RETROSPECTIVE ANALYSIS IN HYPOTHESIS TESTING TO EVALUATE INDONESIA'S GINI RATIO AFTER COVID-19 PANDEMIC
The study highlighted three essential roles of retrospective analysis in hypothesis testing, particularly as a priori analysis, post hoc analysis, and sensitivity analysis. These approaches were applied to the Gini ratio data sourced from the National Socioeconomic Survey Indonesia 2023 to examine t...
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Universitas Pattimura
2024-10-01
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| Online Access: | https://ojs3.unpatti.ac.id/index.php/barekeng/article/view/12965 |
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| author | Karunia Eka Lestari Fitriani Agustina Mokhammad Ridwan Yudhanegara Edwin Setiawan Nugraha Sisilia Sylviani |
| author_facet | Karunia Eka Lestari Fitriani Agustina Mokhammad Ridwan Yudhanegara Edwin Setiawan Nugraha Sisilia Sylviani |
| author_sort | Karunia Eka Lestari |
| collection | DOAJ |
| description | The study highlighted three essential roles of retrospective analysis in hypothesis testing, particularly as a priori analysis, post hoc analysis, and sensitivity analysis. These approaches were applied to the Gini ratio data sourced from the National Socioeconomic Survey Indonesia 2023 to examine the income inequality level in Indonesia. The sample size, statistical power, and effect size for the one-sample t-test are evaluated by aid G*Power software. The test results show that for a sample size of 10, at the 95% confidence interval, there is not enough evidence to show that the Gini ratio in 2023 is smaller than 0.4. A retrospective analysis using G*power software reveals that for a sample size of 20 at the same confidence interval, there is enough evidence to suggest that the Gini ratio is statistically significant at less than 0.4 with a power of analysis of 90.8% and an effect size of 0.76. This study has important implications in hypothesis testing, especially in retrospective analysis, since understanding the effect of sample size and effect size makes it possible for academics or practitioners to optimize hypothesis testing and generate more accurate and reliable test results. |
| format | Article |
| id | doaj-art-0f19dcbf65994efa8d9cb22e5de8ca8f |
| institution | Kabale University |
| issn | 1978-7227 2615-3017 |
| language | English |
| publishDate | 2024-10-01 |
| publisher | Universitas Pattimura |
| record_format | Article |
| series | Barekeng |
| spelling | doaj-art-0f19dcbf65994efa8d9cb22e5de8ca8f2025-08-20T03:37:34ZengUniversitas PattimuraBarekeng1978-72272615-30172024-10-011842517253010.30598/barekengvol18iss4pp2517-253012965RETROSPECTIVE ANALYSIS IN HYPOTHESIS TESTING TO EVALUATE INDONESIA'S GINI RATIO AFTER COVID-19 PANDEMICKarunia Eka Lestari0Fitriani Agustina1Mokhammad Ridwan Yudhanegara2Edwin Setiawan Nugraha3Sisilia Sylviani4Department of Mathematics Education, Faculty of Teacher Training and Education, Universitas Singaperbangsa Karawang, IndonesiaDepartment of Mathematics Education, Faculty of Mathematics and Natural Sciences Education, Universitas Pendidikan Indonesia, IndonesiaDepartment of Mathematics Education, Faculty of Teacher Training and Education, Universitas Singaperbangsa Karawang, IndonesiaDepartment of Actuarial Science, Faculty of Business, President University, IndonesiaDepartment of Mathematics, Faculty of Mathematics and Natural Science, Universitas Padjajaran, IndonesiaThe study highlighted three essential roles of retrospective analysis in hypothesis testing, particularly as a priori analysis, post hoc analysis, and sensitivity analysis. These approaches were applied to the Gini ratio data sourced from the National Socioeconomic Survey Indonesia 2023 to examine the income inequality level in Indonesia. The sample size, statistical power, and effect size for the one-sample t-test are evaluated by aid G*Power software. The test results show that for a sample size of 10, at the 95% confidence interval, there is not enough evidence to show that the Gini ratio in 2023 is smaller than 0.4. A retrospective analysis using G*power software reveals that for a sample size of 20 at the same confidence interval, there is enough evidence to suggest that the Gini ratio is statistically significant at less than 0.4 with a power of analysis of 90.8% and an effect size of 0.76. This study has important implications in hypothesis testing, especially in retrospective analysis, since understanding the effect of sample size and effect size makes it possible for academics or practitioners to optimize hypothesis testing and generate more accurate and reliable test results.https://ojs3.unpatti.ac.id/index.php/barekeng/article/view/12965gini ratiohypothesis testingstatistical powerretrospective analysis |
| spellingShingle | Karunia Eka Lestari Fitriani Agustina Mokhammad Ridwan Yudhanegara Edwin Setiawan Nugraha Sisilia Sylviani RETROSPECTIVE ANALYSIS IN HYPOTHESIS TESTING TO EVALUATE INDONESIA'S GINI RATIO AFTER COVID-19 PANDEMIC Barekeng gini ratio hypothesis testing statistical power retrospective analysis |
| title | RETROSPECTIVE ANALYSIS IN HYPOTHESIS TESTING TO EVALUATE INDONESIA'S GINI RATIO AFTER COVID-19 PANDEMIC |
| title_full | RETROSPECTIVE ANALYSIS IN HYPOTHESIS TESTING TO EVALUATE INDONESIA'S GINI RATIO AFTER COVID-19 PANDEMIC |
| title_fullStr | RETROSPECTIVE ANALYSIS IN HYPOTHESIS TESTING TO EVALUATE INDONESIA'S GINI RATIO AFTER COVID-19 PANDEMIC |
| title_full_unstemmed | RETROSPECTIVE ANALYSIS IN HYPOTHESIS TESTING TO EVALUATE INDONESIA'S GINI RATIO AFTER COVID-19 PANDEMIC |
| title_short | RETROSPECTIVE ANALYSIS IN HYPOTHESIS TESTING TO EVALUATE INDONESIA'S GINI RATIO AFTER COVID-19 PANDEMIC |
| title_sort | retrospective analysis in hypothesis testing to evaluate indonesia s gini ratio after covid 19 pandemic |
| topic | gini ratio hypothesis testing statistical power retrospective analysis |
| url | https://ojs3.unpatti.ac.id/index.php/barekeng/article/view/12965 |
| work_keys_str_mv | AT karuniaekalestari retrospectiveanalysisinhypothesistestingtoevaluateindonesiasginiratioaftercovid19pandemic AT fitrianiagustina retrospectiveanalysisinhypothesistestingtoevaluateindonesiasginiratioaftercovid19pandemic AT mokhammadridwanyudhanegara retrospectiveanalysisinhypothesistestingtoevaluateindonesiasginiratioaftercovid19pandemic AT edwinsetiawannugraha retrospectiveanalysisinhypothesistestingtoevaluateindonesiasginiratioaftercovid19pandemic AT sisiliasylviani retrospectiveanalysisinhypothesistestingtoevaluateindonesiasginiratioaftercovid19pandemic |