scholarly journals Stock Price dan COVID-19 : Sebuah Studi Perbandingan pada Sektor Perbankan Indonesia

2021 ◽  
Vol 9 (1) ◽  
pp. 77-82
Author(s):  
Elliv Hidayatul Lailiyah ◽  
Arfiana Dewi ◽  
Rita Nataliawati
Keyword(s):  
Stock Price ◽  
T Test ◽  
Paired Samples

Pandemi COVID-19 telah memberikan pengaruh pada setiap sektor kehidupan termasuk dalam dunia pasar modal dan perbankan. Penelitian ini bertujuan untuk menganalisa peristiwa pandemi COVID-19 terhadap harga saham. Penelitian ini menggunakan studi perbandingan yaitu dengan membandingkan harga saham perbankan kedalam tiga periode. Periode perbandingan yang digunakan adalah sebelum COVID-19 melanda Indonesia, saat kasus pertama COVID-19 diumumkan di Indonesia (t+1) dan pasca kasus pertama yaitu ketika vaksin COVID-19 ditemukan pertama kali (t+1). Penelitian ini menggunakan bank yang terdaftar di Bursa Efek Indonesia dengan top ten asset terbesar pada kuartal I tahun 2020. Analisis data menggunakan uji Paired Samples T-Test. Hasil penelitian menunjukkan bahwa terdapat perbedaan harga saham sebelum COVID-19 melanda Indonesia dan saat kasus pertama COVID-19; terdapat perbedaan harga saham saat kasus pertama COVID-19 diumumkan di Indonesia dan pasca kasus pertama COVID-19; serta terdapat perbedaan harga saham sebelum COVID-19 melanda Indonesia dan pasca kasus pertama COVID-19 diumumkan di Indonesia.

scholarly journals Effect of Mergers and Acquisitions on Performance of Enterprise Value

2018 ◽  
Vol 5 (2) ◽  
Author(s):  
T. Sathishkumar ◽  
P.N. Assai Tamby
Keyword(s):  
Mergers And Acquisitions ◽  
Stock Price ◽  
Business Performance ◽  
T Test ◽  
Mean Difference ◽  
Enterprise Value ◽  
Paired Samples ◽  
Acquiring Firms ◽  
The Mean ◽  
The Impact

In this study, we have made an analysis on the impact of Mergers and Acquisitions (M and A) on the performance of Enterprise Value in the post-merger period. For this purpose, ten firms were selected based on the adequacy of data for a period of ten years on a year-to-year basis from 2006-2007 to 2016-2017. The firms, which had gone into the M and A process during the financial year 2011–2012 are also considered for the study. Paired samples t-test is applied to study the mean difference in performance of Enterprise Value of the acquiring firms in the pre-and post-merger periods. From the analysis, it has been found that the acquiring firms drastically improved in stock price and business performance. As a result the acquiring firms are visible among competitors with a capacity to develop into something big in the future and merged firms feel that they have chosen a good acquirer firm. Hence, most of the acquiring firms have significant change in the performance of Enterprise Value in the post-merger period.

Effect of Adaptive Compression and Fast-Acting WDRC Strategies on Sentence Recognition in Noise in Mandarin-Speaking Pediatric Hearing Aid Users

2018 ◽  
Vol 29 (04) ◽  
pp. 273-278
Author(s):  
Haihong Liu ◽  
Yuanhu Liu ◽  
Ying Li ◽  
Xin Jin ◽  
Jing Li ◽  
...  
Keyword(s):  
Repeated Measures ◽  
Dynamic Range ◽  
Hearing Aid ◽  
Hearing Threshold ◽  
T Test ◽  
Sentence Recognition ◽  
Repeated Measures Design ◽  
Paired Samples ◽  
Adaptive Compression ◽  
Fast Acting

AbstractWide dynamic range compression (WDRC) has been widely used in hearing aid technology. However, several reports indicate that WDRC may improve audibility at the expense of speech intelligibility. As such, a modified amplification compression scheme, named adaptive compression, was developed. However, the effect of compression strategies on speech perception in pediatric hearing aid users has not been clearly reported.The purpose of the present study was to investigate the effect of adaptive compression and fast-acting WDRC processing strategies on sentence recognition in noise with Mandarin, pediatric hearing aid users.This study was set up using a double-blind, within-subject, repeated-measures design.Twenty-six children who spoke Mandarin Chinese as their primary language and had bilateral sensorineural hearing loss participated in the study.Sentence recognition in noise was evaluated in behind-the-ear technology with both adaptive compression processing and fast-acting WDRC processing and was selected randomly for each child. Percent correct sentence recognition in noise with fast-acting WDRC and adaptive compression was collected from each participant. Correlation analysis was performed to examine the effect of gender, age at assessment, and hearing threshold of the better ear on signal-to-noise ratio, and a paired-samples t test was employed to compare the performance of the adaptive compression strategy and fast-acting WDRC processing.The mean percentage correct of sentence recognition in noise with behind-the-ear technology with fast-acting WDRC and adaptive compression processing were 62.24% and 68.71%, respectively. The paired-samples t test showed that the performance of the adaptive compression strategy was significantly better than the fast-acting WDRC processing (t = 3.190, p = 0.004).Compared with the fast-acting WDRC, adaptive compression provided better sentence recognition in noise for Mandarin pediatric hearing aid users.

PENGARUH PUBLIKASI LAPORAN KEUANGAN TERHADAP VOLUME PERDAGANGAN SAHAM DI BURSA EFEK INDONESIA

2017 ◽  
Vol 13 (1) ◽  
pp. 19
Author(s):  
Mikha Gorbyanto Nuari ◽  
Astuti Yuli Setyani
Keyword(s):  
Capital Market ◽  
Investment Decision ◽  
Rapid Development ◽  
Financial Statements ◽  
T Test ◽  
Stock Trading ◽  
Event Window ◽  
Paired Samples ◽  
Significant Difference ◽  
High Investment

Capital market in Indonesia today is experiencing rapid development, the growth contribute to the high investment that can be seen from the number of shares traded by investors. Financial statements are one of many source which investor used as a source of consideration to make investment decision. The purpose of this study was to examine whether there is a difference between the volume of stock trading before the publication of financial statements and after the publication of financial statements in 20 days event window. The research sample is a group companies that included in the index stock LQ 45 in 2016. Hypothesis testing using a paired sample t-test. The results of this test showed no significant difference between the volume of trade before publication of the financial statements and after the publication of the financial statements.Key terms: financial statements, volume of stock trading, capital market, investmentPasar modal di Indonesia dewasa ini mengalami perkembangan yang pesat, hal tersebut berdampak pada tingginya investasi dilihat dari jumlah saham yang ditransaksikan oleh investor. Laporan keuangan merupakan salah satu sumber informasi bagi investor sebagai bahan pertimbangan dalam melakukan keputusan investasi. Tujuan dari penelitian ini adalah untuk menguji apakah ada perbedaan antara volume perdagangan saham sebelum publikasi laporan keuangan dengan sesudah publikasi laporan keuangan pada event window 20 hari. Sampel penelitian merupakan perusahaan yang masuk dalam kelompok indeks saham LQ 45 pada tahun 2016. Pengujian hipotesis dilakukan dengan menggunakan uji paired samples t-test. Hasil dari pengujian ini menunjukkan tidak adaperbedaan yang signifikan antara volume perdagangan sebelum publikasi laporan keuangan dengan sesudah publikasi laporan keuangan.Kata Kunci: laporan keuangan, volume perdagangan saham, pasar modal, investasi.

Abstract TMP2: Is Eptifibatide a Viable and Safe Option as Stand-alone Therapy for Acute Ischemic Stroke Patients?

Stroke ◽  
2016 ◽  
Vol 47 (suppl_1) ◽  
Author(s):  
Daniel Korya ◽  
Mohammad Moussavi ◽  
Siddhart Mehta ◽  
Jaskiran Brar ◽  
Harina Chahal ◽  
...  
Keyword(s):  
Ischemic Stroke ◽  
Acute Ischemic Stroke ◽  
Time Window ◽  
T Test ◽  
Bleeding Complications ◽  
Stroke Severity ◽  
Paired Samples ◽  
Group A ◽  
Group B ◽  
Iv Tpa

Introduction: The list of contraindications for IV tPA in acute ischemic stroke (AIS) is often too long and may lead to physicians opting to offer no treatment for certain strokes. An alternative treatment is proposed in cases where IV tPA is not an option due to time-window restrictions or contraindications. We compared the stroke severity, outcomes and safety of IV eptifibatide when compared with IV tPA. Methods: Patients who presented to a community based university affiliated comprehensive stroke center from 2012-15 with AIS over a two-year period were included in the study. Those who qualified for IV tPA, and were treated, were compared with patients who only received IV eptifibatide. The initial NIH Stroke Score (NIHSS), 24-hour NIHSS, discharge NIHSS (DCNIHSS), discharge mRS (DCmRS) and symptomatic ICH rates were compared with a paired samples t-test to determine significance of difference between the means. SPSS Version 22 was used for all data analysis. Results: A total of 864 patients presented with AIS in the evaluated time period and of those 166 met study criteria. There were 119 patients who received IV tPA alone (group A) and 47 patients received eptifibatide (group B). The mean initial NIHSS, 24-NIHSS, DCNIHSS, DCmRS and percent bleeding complications for group A were: 11.2, 10.8, 8.6, 3.1 and 6%. For group B the figures were: 6.7, 4.8, 4.3, 1.7 and 0%, respectively. Group A was compared with group B in a paired samples T-test and yielded -4.3, -6.2, -6, -1.5 (p=.0001 to .04) for initial, 24-hour, discharge NIHSS and discharge mRS, respectively. The difference between initial and discharge NIHSS between the two groups was -2.7 (p=.009), favoring IV tPA. Conclusion: In patients who are either outside the time-window or with contraindications to IV tPA, eptifibatide may be a safe alternative and appears to be efficacious. None of the patients who were started on eptifibatide had bleeding complications and they had a statistically significant improvement in their level of disability and stroke severity at discharge. A limitation of this study is that patients in group A had significantly worse initial NIHSS compared with group B. To better evaluate the efficacy of eptifibatide, a larger, prospective study should be initiated.

scholarly journals PENGARUH VOLUME PERDAGANGAN DAN SIMPLE MOVING AVERAGE TERHADAP HARGA SAHAM

2020 ◽  
Vol 1 (1) ◽  
pp. 1-16
Author(s):  
Gama Paksi Baskara ◽  
Suyanto Suyanto ◽  
Sri Retnaning Rahayu
Keyword(s):  
Stock Prices ◽  
Stock Price ◽  
Trading Volume ◽  
Qualitative Data ◽  
Moving Average ◽  
Analytical Tool ◽  
T Test ◽  
Quantitative Approach ◽  
F Test ◽  
Regression Tests

Trading volume is a sheet of company shares traded on a particular transaction and has beenagreed between the seller and the buyer, Simple Moving Average is a method that studies themovement of the previous stock price based on the number of certain days in order to predict thestock price that will occur to the next.The objective of the study is to find out how much influenceTrade Volume and Simple Moving Average on Stock Prices is and what are the most dominantaspects in influencing Stock Prices. The type of the research uses a quantitative approach, namely anapproach in which the data are in the form of numbers or qualitative data that have been used asnumbers. The technique of collecting data uses documentation. The analytical tool used is multiplelinear regression tests including T Test, F Test and Coefisein R² Determination processed usingEviews. The results of the study show that partially the trading volume variable does not have asignificant effect on Stock Prices and the Simple Moving Average variable shows a positive andsignificant effect on stock prices while the results of the research simultaneously show that theTrading Volume and Simple Moving Average variables simultaneously affect the Stock Price .

scholarly journals ANALISIS PERGERAKAN SAHAM PERUSAHAAN SUB SEKTOR FARMASI MENGGUNAKAN INDIKATOR BOLLINGER BAND DI TENGAH PANDEMI COVID-19

2020 ◽  
Vol 3 (2) ◽  
pp. 77-88
Author(s):  
Intan Elita ◽  
K. Bagus Wardianto ◽  
M. Iqbal Harori
Keyword(s):  
Stock Prices ◽  
Stock Price ◽  
Sampling Method ◽  
Sample Selection ◽  
T Test ◽  
Analysis Tool ◽  
Selection Technique ◽  
Purposive Sampling ◽  
Analysis Technique ◽  
Significant Difference

This study aims to measure the accuracy of technical analysis using the Bollinger Band indicator in predicting stock prices in the middle of pandemic covid-19. The concept in this study is to compare daily stock price predictions according to technical indicators with the closing prices that occured on that day. Sample selection technique used in this research used a purposive sampling method and obtained 9 pharmaceutical sub-sector companies listed on the IDX from February to April 2020. The type of data used is a chart of the company's daily stock price movements obtained from finance.yahoo.com. The data analysis technique used was the paired sample t-test and used the SPSS 26 analysis tool. The results of this study indicate that the Bollinger indicator does not have a significant difference. ABSTRAK Penelitian ini bertujuan untuk mengukur keakuratan analisis teknikal dengan indikator Bollinger Band dalam memprediksi harga saham pada masa pandemi Covid-19. Konsep pada penelitian ini adalah membandingkan prediksi harga saham harian menurut indikator teknikal dengan harga penutupan yang terjadi pada hari tersebut. Teknik pengambilan sampel dalam penelitian ini menggunakan metode purposive sampling dan diperoleh sebanyak 9 perusahaan sub sektor farmasi yang terdaftar di BEI selama Februari hingga April 2020. Jenis data yang digunakan yaitu berupa grafik pergerakan harga saham harian perusahaan yang diperoleh dari finance.yahoo.com. Teknik analisis data yang digunakan adalah uji independent sample t-test dan menggunakan alat analisis program SPSS 26. Hasil penelitian ini menunjukkan bahwa indikator Bollinger tidak memiliki perbedaan yang signifikan.

scholarly journals ANALYZING ABNORMAL RETURN BEFORE AND AFTER THE ANNOUNCEMENT OF MERGER AND ACQUISITION IN 2018

2018 ◽  
Vol 1 (2) ◽  
pp. 14-22
Author(s):  
Sonny Haryanto ◽  
Umi Mardiyati ◽  
Agung Dharmawan Buchdadi
Keyword(s):  
Mergers And Acquisitions ◽  
Stock Price ◽  
Abnormal Return ◽  
Abnormal Returns ◽  
T Test ◽  
Testing Hypotheses ◽  
Paired Sample ◽  
Minute Period ◽  
Before And After ◽  
Observation Period

This study aims to analyze the abnormal returns before and after the announcement of mergers and acquisitions in the companies listed on the IDX 2018. In this study the observation period taken was three days before and after the announcement of mergers and acquisitions with the number of samples observed were 9 companies. The method for calculating abnormal returns used is the market adjusted return by using an intraday stock price of 15 minutes. Based on testing hypotheses conducted by paired sample t-test, it was found that there were no significant differences in abnormal returns before and after the announcement of mergers and acquisitions in each 15 minute period.

scholarly journals Perbedaan Pengaruh Media Lembar Balik dan Kartu Kendali Edukasi Terhadap Pengetahuan Dan Sikap Ibu Menyusui Tentang ASI Ekslusif Di Wilayah Kerja Puskesmas Koppe Kabupaten Bone

2021 ◽  
Vol 2 (1) ◽  
pp. 91-102
Author(s):  
Sutriani ◽  
Muhammad Kidri Alwi ◽  
Andi Asrina
Keyword(s):  
T Test ◽  
P Value ◽  
Purposive Sampling ◽  
Paired Samples ◽  
Quasi Experiment

Latar Belakang: Cakupan ASI Eksklusif masih banyak yang tidak mencapi target dan masih banyak ibu yang tidak memberikan ASI Eksklusif kepada bayinya karena minimnya pengetahuan mengenai manfaat ASI Eksklusif dan sikap atau kebiasaan yang dilakukan tanpa melalui penalaran apakah yang dilakukannya baik atau tidak dalam pemberian ASI. Tujuan penelitian ini adalah untuk menganalisis perbedaan pengaruh media lembar balik dan kartu kendali edukasi terhadap pengetahuan dan sikap ibu menyusui tentang ASI Eksklusif di wilayah kerja puskesmas Koppe Kabupaten Bone. Metode: Desain penelitian yang digunakan adalah Quasi experiment dengan rancangan two group pretest dan posttest design. Tehnik pengambilan sampel dalam penelitian ini adalah purposive sampling yaitu sebanyak 70 responden. Analisis data menggunakan uji statistic Paired Samples Test  dan independent t-test dengan tingkat kemaknaan 95% (α: 0,05). Hasil: Hasil penelitian pada dua kelompok intervensi menggunakan uji Paired Samples Test menunjukkan ada pengaruh pengetahuan dan sikap ibu menyusui tentang ASI Eksklusif sebelum dan sesudah penggunaan media lembar balik dan kartu kendali edukasi dengan p value masing-masing 0,000 (p value < 0,05). Ada perbedaan pengaruh pengetahuan antara kelompok lembar balik dan kartu kendali edukasi setelah diberikan intervensi dengan menggunakan uji independent t-tes ( p value 0.002 < 0,05). Tidak ada perbedaan pengaruh sikap antara kelompok lembar balik dan kartu kendali edukasi setelah diberikan intervensi ( p value 0.085 > 0,05). Kesimpulan: Terdapat pengaruh penggunaan media lembar balik dan kartu kendali edukasi terhadap pengetahuan dan sikap ibu menyusui tentang ASI Eksklusif. Terdapat perbedaan pengaruh pengetahuan antara kelompok lembar balik dan kartu kendali edukasi setelah diberikan intervensi dan tidak ada perbedaan pengaruh sikap antara kelompok lembar balik dan kartu kendali edukasi setelah diberikan intervensi.

scholarly journals Learning The Strategy of Reasoning Through Marzano Dimensional Mastery Learning Model Among Form Four Students for The Topic Of Differentiation

2017 ◽  
Vol 9 (1-4) ◽  
Author(s):  
Mohamad Nizam Arshad ◽  
Noor Azean Atan ◽  
Abdul Halim Abdullah ◽  
Mahani Mokhtar ◽  
Mohd Salleh Abu
Keyword(s):  
Teaching And Learning ◽  
Learning Strategy ◽  
Implementation Process ◽  
T Test ◽  
Education Development ◽  
Paired Samples ◽  
Significant Difference ◽  
Before And After ◽  
Post Test ◽  
Reasoning Skills

Reasoning skills are very important in encouraging students to think more critically and logically, as depicted in the Malaysian Education Development Plan (2013-2025). Therefore, this study looked into improving the Differentiation Reasoning Level (DRL) of reasoning skills among students for a topic in the Additional Mathematics subject,  known as Differentiation, through reasoning learning strategy. The study participants consisted of a total of 31 students from a secondary boarding school in Johor, selected through a purposive sampling method. A pre-test was carried out for the participants, from the advanced level, followed by a number of repetition tests, before the post-test assessment was conducted. The data collection for this study employed a set of Reasoning Test on Differentiation (RTD) and 10 sets of learning activities on Differentiation based on modified Marzano Rubric for Specific Task of Situations (1992). This dimension involved four types of reasoning skills, namely,  comparison, classification, inductive, and deductive. The survey data, through paired samples t-test, revealed a significant difference between the mean scores in pre-test and post-test (p <0.05). In addition, the paired sample t-test showed a significant difference on the level of reasoning among students from each construct in the reasoning skills before and after using this module. In conclusion, the Marzano Model of Dimensional Learning (1992) is a thinking skill model that can help improve students' reasoning skills. The model covers analysis aspects of what has been learned by implementing the process of identifying reasons, which will help students to add and expand their knowledge. The findings also implied that, the processes of teaching and learning play an important role in ensuring students’ capability to emphasize on the implementation process of reasoning skills

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