scholarly journals Methods of application of Wilcoxone and Manna-Whitney criteria in pedagogical experiment

2021 ◽  
Vol 10 ◽  
pp. 20-26
Author(s):  
Olga BONDAR ◽  
◽  
Marina SEMENYUTA ◽  
Keyword(s):  
Hypothesis Test ◽  
Optimal Combination ◽  
Wilcoxon Test ◽  
Practical Skills ◽  
Practical Application ◽  
Alternative Hypotheses ◽  
The Difference ◽  
Pedagogical Research ◽  
Homogeneity Hypothesis ◽  
Sample Homogeneity

In [1], we considered the problems of identifying and calculating the criteria for testing the hypothesis of homogeneity of two independent samples. In particular, we drew attention to the ambiguous names of the hypothesis test criterion. We also noted the difference between the assumptions and formulations of the hypothesis. In this case, different formulas for calculations require proof of their equivalence. Our analysis of research and publications has shown that examples of the application of the criteria of homogeneity of Wilcoxon and Mann-Whitney samples are largely technical in nature. That is, these examples usually contain tools for calculating statistics and do not cover all the possibilities of applying the criteria. Therefore, the method of using criteria requires an optimal combination of theoretical principles with the formation of practical skills of hypothesis testing. When conducting a pedagogical experiment, the researcher should be able to consider theoretically sound calculation examples. These examples of the application of criteria should be available primarily to researchers who are not mathematicians. Our experience has confirmed the need for the researcher to acquire stable skills in the practical application of the criteria of sample homogeneity in scientific and pedagogical research. We considered the concept of sample homogeneity in conducting a pedagogical experiment on the examples of statistical information of control and experimental groups. It was noted that the homogeneity of the samples can not always be determined by direct observation of their elements. We formulated an algorithm for applying the Wilcoxon and Mann-Whitney criteria to test the hypothesis �0: F1(x) = F2(x) about the homogeneity of the samples. We have considered examples of the application of criteria in a pedagogical experiment. In particular, the statistical values of the Wilcoxon test and the Mann-Whitney criteria were calculated. Also, we show their connection with the area of acceptance of hypothesis �0 under different alternative hypotheses �1. The prospect of our further research is the formation of methods for applying the criteria most commonly used in scientific and pedagogical research of distributions of random variables. Key words: Wilcoxon criteria, Mann-Whitney criteria, sample homogeneity, hypothesis acceptance area, sample rank.

Speech Methodologies in Cleft Palate Assessment: A Pilot Project to Compare Two Phonetically Different Sentence Sets

2013 ◽  
Vol 20 (1) ◽  
pp. 49-72
Author(s):  
Jennie Smith ◽  
Tim Pring ◽  
Debbie Sell
Keyword(s):  
Cleft Palate ◽  
Pilot Project ◽  
Wilcoxon Test ◽  
Consecutive Series ◽  
Video Recordings ◽  
Significant Difference ◽  
The Difference ◽  
Audio Video ◽  
Age Range ◽  
The Impact

Objective: To investigate the impact of the phonetic content of two sentence sets on speech outcomes, specifically the effects of nasal phonemes. Method: Audio-video recordings of a consecutive series of 15 participants (age range 4–22 years), with cleft palate (syndromic or non-syndromic), with and without velopharyngeal dysfunction were taken. Participants repeated Sentence Set 1 (with nasals across sentences) and Sentence Set 2 (without nasals except the three nasal target sentences) during a routine speech recording. Two experienced Specialist Speech and Language Therapists, blinded to the study’s purpose, analyzed participants’ speech using the Cleft Audit Protocol for Speech-Augmented (CAPS-A). On day 1, recordings included Sentence Set 1. On day 2, 23 days later, recordings included Sentence Set 2. Main results: The difference between Sentence Set 1 and Sentence Set 2 ‘total scores’ (sum of scores on all CAPS-A parameters) was significant. The Pearson Product Moment showed high correlation. A Wilcoxon test revealed a significant difference between Sets 1 and 2 on the hypernasality parameter, and this alone accounted for the significant difference in total scores. Conclusion: The inclusion or exclusion of nasal consonants in the sentence set significantly affected perceptual ratings of hypernasality but none of the other CAPS-A parameters, highlighting the need for further investigation into perceptual nasality ratings.

Male-biased sex ratio in Argulus canadensis Wilson, 1916 (Crustacea: Branchiura) ectoparasitic on sticklebacks

1989 ◽  
Vol 67 (8) ◽  
pp. 2078-2080 ◽  
Author(s):  
Robert Poulin ◽  
Gerard J. FitzGerald
Keyword(s):  
Salt Marsh ◽  
Sex Ratio ◽  
Laboratory Experiments ◽  
Fish Predation ◽  
Reproductive Behaviour ◽  
Egg Deposition ◽  
Alternative Hypotheses ◽  
Biased Sex Ratio ◽  
The Difference ◽  
Fish Hosts

Females of the ectoparasitic crustacean Argulus canadensis must leave their fish hosts at least temporarily to deposit their eggs on the substrate. To test the hypothesis that this difference in reproductive behaviour between the two sexes could result in male-biased sex ratios on their stickleback hosts, we sampled sticklebacks in tide pools of a Quebec salt marsh from early July to early September 1986. During this period, fish harboured significantly more male than female A. canadensis. Laboratory experiments were done to test two alternative hypotheses offered to explain this biased sex ratio. The first hypothesis was that male A. canadensis were more successful than females in attacking their stickleback hosts; however, we found no differences in attack success on their hosts between the two parasite sexes. The second hypothesis was that sticklebacks ate more female than male A. canadensis. Although males were less vulnerable to fish predation than females, the difference was not significant. We conclude that sexual differences in reproductive behaviour, i.e., egg deposition behaviour of females, can account for the male-biased sex ratio of A. canadensis on sticklebacks.

Method for the simultaneous quantification of n-hexane metabolites: application to n-hexane metabolism determination

1996 ◽  
Vol 15 (6) ◽  
pp. 497-503 ◽  
Author(s):  
T. Soriano ◽  
M. Menéndez ◽  
P. Sanz ◽  
M. Repetto
Keyword(s):  
Similar Pattern ◽  
Analytical Procedure ◽  
Daily Basis ◽  
Practical Application ◽  
Simultaneous Quantification ◽  
Exposed Workers ◽  
Before And After ◽  
Time Requirements ◽  
The Difference

1 The described analytical procedure permits the simultaneous determination of the main n-hexane meta bolites in urine. 2-Hexanone, 2-hexanol, 2, 5-hexanediol and 2, 5-hexanedione, were chosen to dose the rats used in this study. All urine samples were collected and analysed on a daily basis, before and after acidic hydrolysis (pH 0.1) by GC/MS. 2-Hexanone, 2, 5-dimethylfurane, γ-valerolac tone and 2, 5-hexanedione were determined before hydro lysis ; 2-hexanol and 2, 5-hexanediol, after hydrolysis; and 5-hydroxy-2-hexanone and 4, 5-dihydroxy-2-hexanone were calculated by the difference between γ-valerolactone and 2, 5-hexanedione with and without hydrolysis, respectively. 2 A metabolic scheme was proposed reflecting the biotransformations undergone by the four compounds assayed. We consider 2, 5-dimethylfurane as a 'true metabolite' because the quantities detected were always greater before hydrolysis. 3 It has been reported that human and rat n-hexane metabolism follow a similar pattern. Therefore, as a practical application and without increasing either sample or time requirements, the simultaneous quantifi cation of the different metabolites and their excretion profile could provide better information about the metabolic situation of exposed workers than the determi nation of 2, 5-hexanedione alone. According to our experimental results, 4, 5-dihydroxy-2-hexanone itself would be a good toxicity indicator.

Efektivitas Konseling Individual melalui Pendekatan Konseling Rasional Emotif dalam Mengatasi Kecemasan

2021 ◽  
Vol 8 (1) ◽  
pp. 19
Author(s):  
Indah Etika Putri ◽  
Zulfani Sesmiarni ◽  
Alfi Rahmi
Keyword(s):  
Statistical Tests ◽  
Target Population ◽  
Wilcoxon Test ◽  
P Value ◽  
Test Calculation ◽  
Individual Counseling ◽  
Data Collection Instrument ◽  
Calculation Results ◽  
The Difference ◽  
Class Iib

<em>The aim of this research is to find out the effectiveness of individual counseling through emotive rational counseling approach in overcoming anxiety in Payakumbuh Class IIB Penitentiary. The population is fostered citizens before the criminal period ends as many as 20 people, while the study sample is fostered citizens before the criminal period ends as many as 5 people and who are indicated to have high anxiety based on non-rondom sampling techniques and recommendations from employees. The data collection instrument is a Likert scale. Data analysis techniques using non-parametric statistical tests using Wilcoxon rack test, hypothesis testing using Statistical Product and Service Solution (SPSS) version 22. The results showed the difference between the pretest and posttest values. From the Wilcoxon test calculation results obtained a significant sip-value of 2.023. Based on the applicable provisions, it is known that the Wilcoxon Sig p-value test result is 0.043 &lt;α (α = 0.05) which means that Ha is accepted and Ho is rejected. From the results of the Wilcoxon test calculation it can be concluded that it is effective to overcome anxiety in the target population before the criminal period expires.</em>

PENGARUH BUERGER ALLEN EXERCISE TERHADAP NILAI ANKLE BRACHIAL INDEX PADA PASIEN DIABETES MELITUS

2021 ◽  
Vol 4 (1) ◽  
pp. 90-94
Author(s):  
Pratiwi Christa Simarmata ◽  
Sari Desi Esta Ulina Sitepu ◽  
Abdi Lestari Sitepu ◽  
Ruttama Hutauruk ◽  
Rita Ayu Butar-butar
Keyword(s):  
Diabetes Mellitus ◽  
Exercise Intervention ◽  
Ankle Brachial Index ◽  
Endocrine System ◽  
Sampling Technique ◽  
Wilcoxon Test ◽  
Flexion Extension ◽  
Patients With Diabetes ◽  
Quasi Experimental ◽  
The Difference

Diabetes mellitus is a disorder of the endocrine system characterized by increased levels of glucose in the blood. The purpose of this study was to assess the effect of Buerger's Allen exercise on the value of the ankle brachial index (ABI) in patients with diabetes mellitus. The research design was a quasi-experimental pretest and posttest without a control. The study was conducted from March to May 2021 at Grandmed Lubuk Pakam Hospital with 48 respondents, with consecutive sampling technique. Data were analyzed using the Wilcoxon test. The Buergers Allen exercise intervention was performed twice a day, for three weeks. The procedure is performed by lifting the lower extremities up at an angle of 45-90 degrees for 2-3 minutes, then the patient sits at the bedside with the legs hanging down, accompanied by flexion, extension, pronation and supination movements for 5-10 minutes, and the patient lies down. with both feet resting for 10 minutes. There was a significant effect between the mean ABI value before intervention 0.83 and after intervention 0.95, p=0.00. The difference in mean ABI p=0.000, p<0.05. The results of the study concluded that there was an effect of buerger allen exercise on the ABI value before and after the intervention where the ABI value was getting better. It is recommended for nurses to make Buergers Allen exercise one of the independent nursing interventions in providing nursing care to patients with diabetes mellitus.

Moving to e-bidding

2019 ◽  
Vol 24 (1) ◽  
pp. 2-18 ◽  
Author(s):  
Djoen San Santoso ◽  
Nuttapon Bourpanus
Keyword(s):  
Wilcoxon Test ◽  
Test Results ◽  
Public Infrastructure ◽  
Senior Managers ◽  
Content Type ◽  
Thai Government ◽  
Infrastructure Project ◽  
The Difference ◽  
Public Money ◽  
Mean Differences

Purpose This study aims to examine the influences of shifting the bidding system of Thai public infrastructure projects from e-auction to e-bidding. Design/methodology/approach A questionnaire survey was conducted with owners or senior managers with direct responsibility in deciding the mark-up of 72 small and medium-sized contractor firms. Five senior professionals were interviewed to provide insights into and to strengthen the discussion of the findings. The Wilcoxon test was applied to analyze the difference in the importance of the factors between e-auction and e-bidding. Findings The results revealed a shift in the importance of the factors, from those related to the financial aspects in the e-auction to the situational aspects in the e-bidding. The comparison test results also suggested that the majority of factors become significantly less important in the e-bidding system, with “identity of competitors” and “general expense of the bidding process” having the most apparent mean differences. The interview results supported by data on winning prices and estimations strongly indicated that bid collusions likely exist in the e-auction. By shifting to e-bidding, the data also show that the Thai Government can save public money in its infrastructure project development. Originality/value The study provides an analysis from the perspectives of contractor firms on how e-auction and e-bidding options influence bid mark-up decisions. Many studies have focused on the issues and advantages provided by the e-procurement mainly from the owner (government)’s perspective but how the change influences the contractor’s attitude has been less explored.

scholarly journals Manfaat Rendaman Air Hangat dan Garam dalam Menurunkan Derajat Edema Kaki Ibu Hamil Trimester III

2020 ◽  
Vol 7 (2) ◽  
pp. 76
Author(s):  
Sawitry Sawitry ◽  
Fitria Hikmatul Ulya ◽  
Elisabet Jemsi Adepatiloy
Keyword(s):  
Pregnant Women ◽  
Quantitative Research ◽  
Mean Value ◽  
Lower Limbs ◽  
Wilcoxon Test ◽  
Warm Water ◽  
Third Trimester ◽  
Post Test ◽  
The Difference ◽  
Leg Edema

ABSTRAK Edema kaki terjadi hampir 80% dari semua kehamilan dan dapat menimbulkan ketidaknyamanan selama kehamilan seperti nyeri, merasa berat, kram pada malam hari, penebalan kulit, dan pigmentasi. Salah satu intervensi non farmakologis untuk mengurangi edema adalah rendaman air hangat dan garam yang merupakan intervensi untuk menghilangkan edema pada ekstremitas bawah  selama kehamilan. Menganalisis  pengaruh rendaman air hangat dan garam  terhadap edema kaki ibu hamil trimester III. Penelitian kuantitatif dengan metode quasy eksperimental one group pre test post test desaign. Sampel penelitian sebanyak 16 ibu hamil Trimester III dengan teknik accidental sampling. Analisis data menggunakan uji Wilcoxon. Terjadi penurunan tingkat edema kaki pada ibu hamil dengan selisih nilai tengah edema kaki sebelum 4,00 dan setelah perlakuan sebesar 0,00  .Uji Wilcoxon menunjukkan ρ value 0,000. Ada pengaruh rendaman air hangat dan garam  terhadap edema kaki ibu hamil trimester III. Kata Kunci : rendaman air hangat dan garam; edema; tungkai bawah ; ibu hamil.  THE EFFECT OF WARM WATER AND SALT IMMERSION IN DECLINING LEG EDEMA OF THIRD TRIMESTER PREGNANT WOMEN  ABSTRACT Edema of the legs occurs in almost 80% of all pregnancies and can cause discomfort during pregnancy such as pain, feeling heavy, cramps at night, skin thickening, and pigmentation. One of the non-pharmacological interventions to reduce edema is soaking in warm water and salt which is an intervention to relieve edema in the lower extremities during pregnancy. This study was to determine the effect of warm water and salt immersion in declining leg edema of third trimester pregnant women. This quantitative research used quasy experimental method one group pre test post test desaign. The total samples were 16 respondents with purposive sampling and random sampling techniques. Data analysis used the Wilcoxon test. The difference in the mean value of leg edema before 4.00 and after treatment was 0.00. The Wilcoxon test showed ρ value of 0.000. There is an effect of warm water and salt immersion on leg edema of third trimester pregnant women.   Keywords: warm water and salt soaking; edema; lower limbs; pregnant mother

scholarly journals Perbedaan Perkembangan Motorik Bayi Pasca Pemberian Stimulasi Pijatan dan Berenang

2016 ◽  
Vol 2 (1) ◽  
pp. 42-44
Author(s):  
Aryunani Aryunani ◽  
Pipit Festi Wilianarti
Keyword(s):  
Treatment Group ◽  
Motor Development ◽  
Wilcoxon Test ◽  
Growth Disorders ◽  
Data Sampling ◽  
Developmental Growth ◽  
Before And After ◽  
The Difference ◽  
And Behavior ◽  
Attitudes And Behavior

Developmental growth disorders in children under five will result in a decrease in the formation of attitudes and behavior of children in the future. These disorders can be prevented by stimulating development. This study used a quasy experimental design. This research was carried out for 4 months in Privately Practising Midwives in Sidotopo village of Semampir sub-district of North Surabaya with a sample of infants aged 6 to 12 months. Data sampling used consecutive sampling collected through observation using the observation sheet. Data were analyzed using Wilcoxon test to see the difference in gross motor before and after treatment in  the treatment group. In  the treatment group 40% infant experienced an increase of 1-2 segment of motor development and 60% had an increase of 3-4 segments.  

scholarly journals Efektivitas Akupresur dan Minuman Jahe terhadap Pengurangan Intensitas Nyeri Haid/Dismenore Pada Remaja Putri

2021 ◽  
Vol 21 (1) ◽  
pp. 215
Author(s):  
Indah Dewi Sari ◽  
Utary Dwi Listiarini
Keyword(s):  
Young Women ◽  
Learning Activities ◽  
Wilcoxon Test ◽  
P Value ◽  
Menstrual Pain ◽  
Normality Test ◽  
Before And After ◽  
Post Test ◽  
Quasi Experimental ◽  
The Difference

Half of the women in Indonesia experience menstrual pain / dysmenorrhoea, 54.89%, experience various disorders including abdominal pain, cramps and back pain. The purpose of this study was to determine the effectiveness of acupressure, ginger drink and the difference in giving acupressure and ginger drink to reducing the intensity of menstrual pain / dysmenorrhea in young women at SMK Swasta PAB 5 Klambir Lima 2020. The design of this study used a quasi-experimental pre and post test with a sample of 30 students who were divided into two groups. Each group was given acupressure and ginger drink in the morning and evening during menstruation from day one to day two. Respondents were assessed for pain before and after the intervention was given. The results of the Shapiro-Wilk normality test contained Sig data (p <0.05). The Wilcoxon test has a p-value of 0.002 (p <0.05), which means that acupressure is effective in reducing the intensity of menstrual pain / dysmenorrhea, there is a p-value of 0.001 (p <0.05) which means that ginger is effective against reducing pain intensity. menstruation / dysmenorrhea, there is a p-value of 0.034 (p <0.05), which means that there is a difference in the effectiveness of acupressure and ginger drink in reducing the intensity of menstrual pain / dysmenorrhea. There is an effectiveness of giving acupressure, ginger drink, and there is a difference in giving acupressure and ginger drink on the intensity of menstrual pain / dysmenorrhea on young women. It is hoped that the school will provide ginger drinks and acupressure measures to young women who experience menstrual pain / dysmenorrhea so that they can participate in learning activities at school.

scholarly journals Audio-visual media to improve sexual-reproduction health knowledge among adolescent

2020 ◽  
Vol 9 (1) ◽  
pp. 138
Author(s):  
Sitti Nur Djannah ◽  
Sulistyawati Sulistyawati ◽  
Tri Wahyuni Sukesi ◽  
Surahma Asti Mulasari ◽  
Fatwa Tentama
Keyword(s):  
Sexual Reproduction ◽  
Junior High School ◽  
Health Knowledge ◽  
Visual Media ◽  
Wilcoxon Test ◽  
Post Intervention ◽  
Before And After ◽  
The Mean ◽  
The Difference ◽  
Source Of Information

<span>Lacking knowledge among adolescents affects their understanding of some problems related to sexual-reproduction health. Electronic media recognized as the favored source of information for adolescents. This research aimed to assess the effect of audio-visual media to the increasing of sexual-reproduction knowledge. We conducted a before and after without control informal experimental study design into 153 students in the 1st-3rd grade of junior high school. The effect of the intervention was assessed through the difference between pre- and post-intervention by using the Wilcoxon test. The mean score of the respondent pre and post-intervention was significantly increasing. The audiovisual increased the knowledge of the adolescent regarding sexual-reproduction health</span>

Sign in / Sign up

Export Citation Format

Share Document