scholarly journals Dampak Pengumuman Covid-19 Terhadap Return Saham: Penelaahan Beberapa Sektor Industri

Akuntabilitas ◽  
2021 ◽  
Vol 14 (2) ◽  
pp. 269-278
Author(s):  
Leni Sari ◽  
Hariman Bone
Keyword(s):  
Abnormal Return ◽  
Banking Sector ◽  
Abnormal Returns ◽  
Rank Test ◽  
Telecommunication Sector ◽  
First Case ◽  
Before And After ◽  
Signed Rank Test ◽  
The Difference ◽  
Return Difference

This Research is an event study that examine abnormal return difference before and after first announcement of covid-19 case in Indonesia. This Study use daily closing price data to calculate returns. We use 30 days estimation period and 20 days window period. The data collection method is purposive sampling. There are 64 companies that meet the establish criteria. Wilcoxon signed rank test and paired sample t-test were used to examine the difference in abnormal return before and after the covid-19 first case announcement in Hotel, Restaurant & Tourism, Banking and telecommunication sector. This study found that there was no difference in abnormal returns before and after the announcement of the first Covid-19 case in Hotel, Restaurant & Tourism and Banking sector. Furthermore, this study found differences in abnormal return before and after the announcement of the first covid 19 case in telecommunication sector. How to Cite:Sari, L., & Bone, H. (2021). Dampak Pengumuman Covid-19 Terhadap Return Saham: Penelaahan Beberapa Sektor Industri. Akuntabilitas: Jurnal Ilmu Akuntansi, 14(2), 269-278.

scholarly journals Analisis Pengaruh Stock Split Terhadap Volume Perdagangan, Harga Saham, dan Abnormal Return pada Perusahaan yang Terdaftar di BEI Periode 2017 - 2018

2020 ◽  
Vol 4 (1) ◽  
pp. 84
Author(s):  
Agus Amanda Tanoyo
Keyword(s):  
Stock Prices ◽  
Trading Volume ◽  
Stock Exchange ◽  
Abnormal Returns ◽  
Rank Test ◽  
Volume Activity ◽  
Stock Split ◽  
Before And After ◽  
Signed Rank Test ◽  
The Difference

This study aims to determine the difference in the trading volume activity, stock prices and abnormal returns before and after the announcement of a stock split. The population of this study are all companies listed in Indonesia Stock Exchange that take corporate action in the form of stock split at period 2017-2018. Sampling using purposive sampling. Based on the sampling criteria predetermined number of samples acquired 24 stocks. The analytical method used is the analysis Wilcoxon Signed Rank Test with the observation period (event window) is 14 days. The results showed that there were differences in the trading volume activity and stock prices before and after the announcement of stock split, while the last hypothesis showed that there were no differences in abnormal returns before and after the announcement of stock split.

scholarly journals Analisis Perbandingan Trading Volume Activity, Bid-Ask Spread dan Abnormal Return Sebelum dan Sesudah Adanya Pengumuman Stock Split pada Perusahaan yang Terdaftar di Bursa Efek Indonesia Periode Januari 2015-Oktober 2018

Telaah Bisnis ◽  
2020 ◽  
Vol 19 (2) ◽  
pp. 95
Author(s):  
Anis Zakiyah ◽  
Hari Nurweni
Keyword(s):  
Abnormal Return ◽  
Trading Volume ◽  
Stock Exchange ◽  
Abnormal Returns ◽  
Rank Test ◽  
Volume Activity ◽  
Bid Ask Spread ◽  
Stock Split ◽  
Before And After ◽  
Signed Rank Test

This study aims to analyze the differences in trading volume activity, bid-ask spread, and abnormal returns before and after the announcement of a stock split in companies listed on the Indonesia Stock Exchange from January 2015 to October 2018. A sample of 39 companies announced a stock split during the period are selected based on certain criteria. The Wilcoxon Signed Rank test is used to analyze the differences in trading volume activity, bid-ask spread, and abnormal returns, five days before and after the announcement. The use of nonparametric statistical analysis was carried out because the data were not normally distributed. The results show that there is no difference in trading volume activity around the announcement of the stock split. On the other hand, the bid-ask spread and abnormal return are statistically different around the announcement of the stock split.

scholarly journals Analisis Pengaruh Merger dan Akuisisi terhadap Kinerja Keuangan dan Abnormal Return pada Perusahaan di Bursa Efek Indonesia Tahun 2014-2018

2021 ◽  
Vol 5 (1) ◽  
pp. 34
Author(s):  
Sylvi Liani Dewi ◽  
Indra Widjaja
Keyword(s):  
Abnormal Return ◽  
Abnormal Returns ◽  
Merger And Acquisition ◽  
T Test ◽  
Rank Test ◽  
Paired Sample ◽  
Signed Rank ◽  
Wilcoxon Signed Rank Test ◽  
Before And After ◽  
Signed Rank Test

This study aims to examine the difference in firm performances and abnormal returns before and after the merger and acquisition in the companies listed on the Indonesian Stock Exchange in the year 2014 to 2018. The data observation period is 1 year before the merger dan acquisition and 2 years after merger and acquisition. The analysis technique used is the Wilcoxon Signed Rank Test for ratio performance and Paired Sample T-test for abnormal return. The results of the testing of the hypothesis show that period 1 year before M&A and comparison comparison 2 years after M&A shows there is no significant difference in company financial performance before and after merger and acquisition. Hypothesis for Abnormal return, there is no difference before and after merger and acquisition.Penelitian ini bertujuan untuk menguji perbedaan kinerja perusahaan dan abnormal return sebelum dan sesudah merger dan akuisisi pada perusahaan yang terdaftar di Bursa Efek pada tahun 2014 hingga 2018. Periode observasi data adalah 1 tahun sebelum merger dan akuisisi dan 1& 2 tahun sesudah merger dan akuisisi. Metode analisa data yang digunakan adalah Wilcoxon Signed Rank Test dan Paired Sample T-Test untuk abnormal return. Hasil pengujian hipotesis menunjukkan bahwa periode 1 tahun sebelum M&A dan perbandingan 2 tahun setelah M&A menunjukkan tidak ada perbedaan signifikan dalam kinerja keuangan perusahaan sebelum dan sesudah merger dan akuisisi. Hipotesis untuk Abnormal return, tidak ada perbedaan sebelum dan sesudah merger dan akuisisi.

scholarly journals The Return Difference between Before and After Issuance of Sharia Bonds (Sukuk)

2020 ◽  
Vol 1 (1) ◽  
pp. 1-7
Author(s):  
Sindi Wiranda
Keyword(s):  
Stock Exchange ◽  
Abnormal Returns ◽  
Rank Test ◽  
Study Program ◽  
Significance Level ◽  
Signed Rank ◽  
Significant Difference ◽  
Before And After ◽  
Signed Rank Test ◽  
Return Difference

This study aims to analyze sharia downloading which returns shares on the Indonesian Stock Exchange. This study uses a study program to see the average abnormal returns around the sharia promulgation date (sukuk) and the average difference in abnormal returns before and after sharia withdrawal (sukuk). The population in this study were all sharia negotiations published in the 2014-2019 period. and still published in February 2020. The window period is 60 days (t - 30 and t + 30) with a sample of 15 publication events. The method used in this study was the t test and Wilcoxon signed rank test. The results showed that there was an average significant abnormal return around the date of promulgation of sharia (sukuk), namely on the 29th and 1st days before the promulgation of sharia (sukuk). And the results of the Wilcoxon sign rank test show that the significance level is 0.003, which means that H0 is accepted so that there is a significant difference in average returns between before and after the announcement of the sharia withdrawal (sukuk) announcement.

The Degree of Subjective Complaints of Students Practice in Mechanical Technology Laboratories

2018 ◽  
Vol 4 (1) ◽  
pp. 22
Author(s):  
I Ketut Widana
Keyword(s):  
Engineering Students ◽  
Standing Position ◽  
Statistical Test ◽  
Rank Test ◽  
Cross Sectional ◽  
Signed Rank ◽  
Before And After ◽  
Signed Rank Test ◽  
The Difference ◽  
Paired T Test

The working practice of the engineering students is part of the learning process that is irreducible and indispensable. The composition of  lecturing between theoretical and practical one is 40% to 60%. With this condition, the students spend more time at the laboratory. Generally, the students perform in the laboratory work by standing position. The design of research is observational cross-sectional. The method applied is observation, interview and measuring. The subjects of research are practicing students amounting to 21 students. Referring to the analysis of statistical test or Wilcoxon signed ranks test, the difference of effect of work position is significant, namely p < 0.05 towards musculoskeletal disorders (MSDs) before and after working. The quantity of the average complaint after working is score 44.62 ± 9.47. The result of Wilcoxon signed rank test shows that there is significant different effects of standing work position, namely p < 0.05 towards fatigue generally before and after working. The degree of the working pulse is on the average of 110.78  ± 17.80 bpm (beats per minutes) which can be categorized into the medium workload. Using paired t-test, the result is p < 0.05.

scholarly journals MARKET REACTION ON THE ANNOUNCEMENT OF SRI KEHATI INDEX IN INDONESIAN STOCK EXCHANGE

2019 ◽  
Author(s):  
Anggita Langgeng Wijaya ◽  
Mia Noviyanti ◽  
Probo Mahayu
Keyword(s):  
Trading Volume ◽  
Market Reaction ◽  
Stock Exchange ◽  
Abnormal Returns ◽  
Rank Test ◽  
Stock Trading ◽  
Population Sampling ◽  
Signed Rank ◽  
Before And After ◽  
Signed Rank Test

The purpose of this study was to test the market reaction to the announcement of the Sri Kehati Index on the Indonesia Stock Exchange. The population in this study is all companies included in the Sri Kehati Index from 2013 to 2016. The selection of samples was taken by the population sampling method. Hypothesis testing is done by paired t test and Wilcoxon Signed Rank Test. The findings of this research are: 1) there is no difference in abnormal returns before and after the announcement of the Sri Kehati Index on the Indonesia Stock Exchange. 2) There is a difference in the activity of stock trading volume before and after the announcement of the Sri Kehati index in the 5th and 6th periods, but there is no difference in the activity of stock trading volume in other periods. The Indonesia Stock Exchange did not react consistently to the announcement of the Sri Kehati Index.

scholarly journals Utilization of Technology to Improve Efficiency in Investigational Drug Management Processes

2020 ◽  
Vol 36 (2) ◽  
pp. 84-90
Author(s):  
Dinesh Pal Mudaranthakam ◽  
Colin Cernik ◽  
Leslie Curtis ◽  
Blake Griffith ◽  
Jinxiang Hu ◽  
...  
Keyword(s):  
Inventory Management ◽  
Processing Time ◽  
Study Drug ◽  
Rank Test ◽  
Investigational Drug ◽  
Utilization Of Technology ◽  
Signed Rank ◽  
Before And After ◽  
Signed Rank Test ◽  
The Difference

Background: Background: An investigational pharmacy is responsible for all tasks related to receiving, storing, and dispensing of any investigational drugs. Traditional methods of inventory and protocol tracking on paper binders are very tedious and could be error-prone. Objective: To evaluate the utilization of the IDS to efficiently manage the inventory within an investigational Pharmacy. We hypothesize that the IDS will reduce the drug processing time. Methods: Our pharmacy tracked the drug processing time before and after using the IDS including the receiving, dispensing, and inventory. As part of the receiving the study drug pharmacists tracked the time it took a pharmacist to complete the tasks of logging the study drug before and after the implementation of the IDS system. In addition, the pharmacy also timed the process for drug dispensing and a full investigational drug inventory check. Wilcoxon signed-rank test was used to compare the difference in the meantime of total processing before and after the IDS. Results: Utilization of the IDS system showed significant reduction in processing time, and improvement of efficiency in inventory management. Additionally, the usability survey of the IDS demonstrated that the IDS system helped pharmacists capture data consistently across every clinical trial. Conclusion: Our results demonstrates how technology helps pharmacists to focus on their actual day to day medication-related tasks rather than worrying about other operational aspects. Informatics team continues to further enhance the features such as monitor portal, and features related to finance – generation of invoices, billing reconciliation, etc.

scholarly journals Effect of Sertraline on Uremic Pruritus Improvement in ESRD Patients

2012 ◽  
Vol 2012 ◽  
pp. 1-5 ◽  
Author(s):  
Mansor Shakiba ◽  
Hoshang Sanadgol ◽  
Hamid Reza Azmoude ◽  
Mohamad Ali Mashhadi ◽  
Hassan Sharifi
Keyword(s):  
Clinical Trial ◽  
Rank Test ◽  
Uremic Pruritus ◽  
Signed Rank ◽  
Wilcoxon Signed Rank Test ◽  
Before And After ◽  
Signed Rank Test ◽  
The Difference ◽  
Chronic Pruritus ◽  
Esrd Patients

Background. Although uremic pruritus is a common and upsetting problem of chronic kidney disease, there is no approved treatment for it. This study was undertaken to find the efficiency of sertraline as a possible treatment for uremic pruritus.Methods. 19 ESRD patients under hemodialysis with severe chronic pruritus were randomly selected to participate in this before-after clinical trial. Before and after starting treatment with sertraline, a detailed pruritus history was obtained and pruritus graded by the 30-item inventory of pruritus that patients based on priorities grade allocated to 3 classes. Subjects were treated with sertraline 50 mg oral daily for four months, with monthly assessments of pruritus symptoms.Results. Before treatment with sertraline, the grade of pruritus in 9 (47.4%) patients was moderate and severe in 10 (52.6%) patients. After treatment, grade of pruritus in 11 (57.8%) patients was weak, 6 (31.5%) have moderate and only 2 (10.7%) patients have severe pruritus. Of 10 patients with severe pruritus, 5 (50%) patients experiencing weak pruritus, and 4 (40%) patients have moderate pruritus after treatment. Based on Wilcoxon signed-rank test, the difference between the grade of pruritus before and after treatment with sertraline was significant (P=0.001).Conclusions. Although no definitive recommendation can be made regarding treatment of uremic pruritus, we found an increased antipruritic effect of sertraline in ESRD patients.

scholarly journals REAKSI PASAR TERHADAP PENGUMUMAN CASH DIVIDEND PADA PERUSAHAAN YANG TERGABUNG DALAM INDEKS KOMPAS 100

2020 ◽  
Vol 9 (3) ◽  
pp. 988
Author(s):  
I Putu Agus Ary Raditya Juliana ◽  
Ica Rika Candraningrat
Keyword(s):  
Abnormal Return ◽  
Trading Volume ◽  
Stock Exchange ◽  
Participant Observation ◽  
Abnormal Returns ◽  
Public Information ◽  
Rank Test ◽  
Cash Dividend ◽  
Volume Activity ◽  
Before And After

The purpose of this study is to determine the market reaction to the announcement of cash dividends, by looking at differences in abnormal return and trading volume activity before and after the cash dividend announcement. Dividend announcement is an event that affects the market, because the company provides information to the public. Information provided by the company will influence investors' decision making and will act on that information. The sample of this study amounted to 33 of the 100 companies incorporated in the Kompas 100 index on the Indonesia Stock Exchange (IDX). The data collection method uses non-participant observation, which is document observation. The analysis technique used is Paired-Sample T Test and Wilcoxon-Signed Rank Test. The results showed that there were no differences in abnormal returns and trading volume activity before and after the distribution of cash dividends. Keywords: cash dividend, abnormal return, trading volume activity

scholarly journals Effects of a periodized functional strength training program (FST) on Functional Movement Screen (FMS) in physical education students

2020 ◽  
Vol 24 (3) ◽  
pp. 162-167
Author(s):  
Michał Sawczyn
Keyword(s):  
Physical Education ◽  
Strength Training ◽  
Statistical Significance ◽  
Rank Test ◽  
Training Intervention ◽  
Control Group ◽  
Before And After ◽  
Signed Rank Test ◽  
The Difference ◽  
Experimental Group

Background and Study Aim: To examine the effects of periodized functional strength training (FST) on FMS scores of sport university students with higher risk of injury. Material and Methods: Thirty three  participants (age 21.6±1.3 years, height 177.8±6.9 m, mass 80.4±7.7 kg) with FMS total score ≤ 14 were selected from eighty two volunteered students of University of Physical Education and Sport in Gdańsk and randomly assigned to experimental group (n=16) and control group (n=17). The FMS test was conducted one week before and one week after the 12 week training intervention. The experimental group participated in FST program through 12 weeks. The control group did not engaged in any additional physical activity than planned in their course of study. The  collected  data  were  analysed  using Statistica 13.3 pl (StatSoft Inc). Wilcoxon signed rank test was used to establish the statistical significance of the difference between FMS total scores within each group and Mann Whitney U test between groups before and after the 12 week training intervention. Results: 45 % of volunteers in the first FMS testing showed total scores ≤14. The experimental group that participated in FST program changed significantly FMS total scores after 12 weeks (p<0.05). There were also significant differences in FMS total score between groups after the experiment (p<0.05). Conclusions: There is a need for injury prevention programs for students of University of Physical Education and Sport in Gdańsk. It is clear from this study that FST is effective in improving FMS total score in students with cut off score ≤14.

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