scholarly journals Correlation Between Arm Muscle Power and Badminton Smash Skill

2021 ◽  
Vol 10 (1) ◽  
pp. 16-20
Author(s):  
Myrza Akbari ◽  
Johaidah Mistar ◽  
Rahmati Ismail ◽  
Razali Ismail
Keyword(s):  
Data Analysis ◽  
Standard Deviation ◽  
Muscle Power ◽  
Coefficient Of Determination ◽  
Average Standard Deviation ◽  
Correlational Research ◽  
The Mean ◽  
Shot Put ◽  
Research Type

Based on theoretical studies, the variable arm muscle power is an important factor of physical condition in supporting badminton smash skills. This study aims to determine the correlation between arm muscle power and badminton smash skills. This research uses a quantitative approach with correlational research type. The research sample consisted of 73 people who were selected from physical Serambi Mekkah University, Banda Aceh. The research instruments used for each varibale were: arm muscle power using the shot put test instrument, while for badminton smash skills using a process and result test developed by the author himself, the data analysis stages consisted of calculating the mean, standard deviation.. The stages of data analysis carried out were the calculation of the average, standard deviation, determination of the t score, calculation of the correlation and the t test to determine the significance of the correlation between variables. Based on the analysis of research data, The correlation between arm muscle power and badminton smash skills is (r = 0.88. which means that there is a significant correlation between arm muscle power and badminton smash skills. Based on the calculation of the coefficient of determination, it was also found that arm muscle power contributed 78.68% to badminton smash skills.

The study of variability in some wool traits in a coarse wool breed of sheep

1973 ◽  
Vol 80 (2) ◽  
pp. 233-238 ◽  
Author(s):  
R. A. Guirgis
Keyword(s):  
Statistical Analysis ◽  
Standard Deviation ◽  
Major Part ◽  
Fibre Diameter ◽  
Coefficient Of Determination ◽  
Main Contributor ◽  
Total Variability ◽  
The Mean ◽  
Staple Length

SummaryWool samples from 47 Barki yearlings were taken from five positions during two years to study the variability in the fleece, the cause of variability and associations between different fleece traits. Statistical analysis has indicated the following significant points.An antero-posterior gradient occurred in the different traits under study. When medullation was discarded, though it was of a low magnitude (3·9%), a reduction of 5·89% in the mean fibre diameter and of 18·33% in its standard deviation occurred.The position most representative of the whole fleece varied with the trait. It is recommended to take three sampling positions forming a triangle, withers, mid-side and hip, to represent the Barki fleece.The animals contributed the major part in the variability of mean fibre diameter (1), the standard deviation of fibre diameter (S.D.1), percentage medullation, mean fibre diameter after discarding the medullated fibres (2), the standard deviation of fibre diameter after discarding the medullated fibres (S.D.2), the contribution of medullation to the total variability, percentage fine fibres and percentage coarse fibres. The positions were the main contributor to the variability of percentage kemp fibres, staple length, medullation index and to a certain extent to that of the kemp score. The year played a significant part in the variability except for 2 and S.D.2.The highest correlations with the standard deviation of fibre diameter were those of percentage medullation and kemp score. These three variables when considered separately accounted for 0·47, 0·35 and 0·31 respectively of the variability in S.D.Equations were obtained to predict the standard deviation from both the mean fibre diameter and the percentage medullation and to predict the mean fibre diameter from the staple length and the kemp score. The coefficient of determination of the first set of equations ranged from 0·47 to 0·56 while that of the second set ranged between 0·07 and 0·51 for different positions.

scholarly journals ANALYSIS OF STUDENTS’ ABILITY IN USING ENGLISH FOR TAKING ORDER PROCEDURE IN RESTAURANT

2018 ◽  
Vol 5 (1) ◽  
pp. 12
Author(s):  
Ida Nyoman Tri Darma Putra
Keyword(s):  
Data Analysis ◽  
Standard Deviation ◽  
English Language ◽  
English Speaking ◽  
The Mean ◽  
English Students ◽  
Academic Year ◽  
Speaking Skills

The aim of this study to analyze students' English speaking skills in conducting taking orders procedure in restaurants.  This study is conducted in order to overcome the problems encountered by the students in speaking activities in taking orders. To measure the ability of students in speaking English in taking orders, the researchers observed the procedures that the students did not perform and measure the students’ competence of English language. Samples of this study are the fourth semester students in Hospitality courses Diploma Degree of Mataram Tourism Institute in Academic Year 2018/2019. The results of this study indicated that the level of completeness of the procedure in taking student orders in STP Mataram is in average. More than 50% students have conducted the appropriate procedure when taking orders in using English. From the result of data analysis in measuring the students’ competence in speaking English, the mean score is 78.90 with standard deviation is 12.14. From the result, it is converted and get score 3.1. The score showed that the ability of English students from 40 students in STP Mataram classified as Good Criteria.

Determination of Maleic Hydrazide Residues in Tobacco and Vegetables

1973 ◽  
Vol 56 (5) ◽  
pp. 1164-1172
Author(s):  
Milan Ihnat ◽  
Robert J Westerby ◽  
Israel Hoffman
Keyword(s):  
Standard Deviation ◽  
Present Method ◽  
Maleic Hydrazide ◽  
Collaborative Study ◽  
Official Method ◽  
Sample Weight ◽  
Relative Standard ◽  
The Mean ◽  
Pipe Tobacco

Abstract The distillation-spectrophotometric method of Hoffman for determining maleic hydrazide has been modified to include a double distillation and was applied to the determination of 1–30 ppm maleic hydrazide residues in tobacco and vegetables. Recoveries of 1–23 μg added maleic hydrazide were independent of weight of maleic hydrazide, but did depend on sample and sample weight. The following recoveries were obtained from 0.5 g sample: pipe tobacco, 84%; commercially dehydrated potato, 83%; cigar tobacco, 81%; dried potato, 76%; fluecured tobacco, 73%; dried carrot, 71%. In the absence of sample, the recovery was 82%. When appropriate standard curves were used, maleic hydrazide levels determined in tobacco samples were essentially independent of sample weight in the range 0.1–3 g. The mean relative standard deviation for a variety of field-treated and fortified tobacco samples containing 1–28 ppm maleic hydrazide was 3%. The precision and sensitivity of this procedure seem to be substantial improvements over official method 29.111–29.117. It is recommended that the present method be subjected to a collaborative study.

Fluorometric Determination of Selenium in Foods

1974 ◽  
Vol 57 (2) ◽  
pp. 368-372 ◽  
Author(s):  
Milan Ihnat
Keyword(s):  
Standard Deviation ◽  
Milk Powder ◽  
Skim Milk ◽  
Skim Milk Powder ◽  
Food Samples ◽  
Fluorometric Method ◽  
Fluorometric Determination ◽  
Relative Standard ◽  
The Mean

Abstract A fluorometric method using 2,3-diaminonaphthalene for estimating selenium has been evaluated with regard to its applicability to food samples. Charring of the sample during digestion appeared to result in losses of native and added selenium from some samples, so a modified wet digestion procedure was introduced. Digestion first in nitric acid followed by a mixture of nitric-perchloric-sulfuric acids substantially reduced the incidence of sample charring for a variety of foods. The mean apparent recovery of selenium added as selenite or selenate at 100 and 500 ng levels to 0.1 and 1.0 g corn cereal, skim milk powder, and meat and 0.1 g fish was 101.0%; the actual recovery of the same levels of selenium from standard solutions was 96.6%. For a variety of samples containing 5—750 ng native or added selenium, the standard deviation as 4.7 + 1.95 X 10-2W ng, where W = ng selenium in the sample taken for analysis. The relative standard deviation (RSD) as a function of selenium weight (ng) was 50% (10), 6.7% (100), 4.3% (200), 3.1% (400), 2.7% (600), and 2.5% (800). The detection limit (weight of selenium at which RSD = 50%) was 10 ng at a mean blank level of 25 ng.

Determination of Inorganic Tin in Biological Samples by Hydride Generation-Atomic Absorption Spectrometry after Silica Gel Cleanup

1988 ◽  
Vol 71 (2) ◽  
pp. 373-374
Author(s):  
Taizo Tsuda ◽  
Minoru Wada ◽  
Shigeru Aoki ◽  
Yoshihiro Matsui
Keyword(s):  
Standard Deviation ◽  
Atomic Absorption Spectrometry ◽  
Atomic Absorption ◽  
Silica Gel ◽  
Biological Samples ◽  
Hydride Generation ◽  
Absorption Spectrometry ◽  
Fish Muscle ◽  
Average Standard Deviation

Abstract A method is described for the determination of inorganic tin in biological samples by hydride generation-atomic absorption spectrometry (HG-AAS). A sample is extracted with ethyl acetate after addition of HC1 and NaCl. The concentrated extract is passed through a silica gel column. The column is washed with ethanol, water, and 0.2N HC1 successively, and then inorganic tin is eluted with 2N HC1 and measured by HG-AAS. Recoveries from fish muscle spiked with 0.1 ng/g Sn4+ are 78.9 ± 4.2% (average ± standard deviation, n = 5). The detection limit is 0.01 jug/g as Sn.

Radioisotope Dilution Technique for Determination of Vitamin B12 in Foods

1982 ◽  
Vol 65 (1) ◽  
pp. 85-88 ◽  
Author(s):  
Patrick J Casey ◽  
Keevin R Speckman ◽  
Frank J Ebert ◽  
William E Hobbs
Keyword(s):  
Standard Deviation ◽  
Vitamin B12 ◽  
Relative Standard Deviation ◽  
Extraction Procedure ◽  
Dilution Technique ◽  
Microbiological Method ◽  
Relative Standard ◽  
Wide Range ◽  
The Mean

Abstract A radioisotope dilution (RID) method for the determination of vitamin B12 is presented. The method combines a standard extraction procedure (AOAC 43.108,12th ed.) with a commercially available RID assay kit. The method was evaluated on a wide range of fortified and unfortified food products. Recovery studies on both groups yielded average recoveries of 98.1 and 95.8%, respectively. Reproducibility data generated from replicate analyses on both groups gave a relative standard deviation of 6.9% for the fortified group and 9.2% for the unfortified group. For the samples studied, the mean vitamin B12 content determined by the RID method was 8.01 μg/100 g vs imean of 7.54 μg/100 g by the AOAC microbiological method; the correlation coefficient was r = 0.983.

A simple spectroturbidimetric method for the determination of the fat content of homogenized ice-cream mixes

1962 ◽  
Vol 29 (1) ◽  
pp. 47-53 ◽  
Author(s):  
J. D. S. Goulden ◽  
P. Sherman
Keyword(s):  
Standard Deviation ◽  
Ice Cream ◽  
Fat Content ◽  
Fat Globule ◽  
The Mean ◽  
Simple Filter

SummaryA rapid spectroturbidimetric method for the determination of the fat content of homogenized ice-cream mixes using a simple filter absorptiometer has been devised. Turbidities are measured at two different wavelengths to allow for changes in the degree of homogenization. The standard deviation of the differences from the values obtained by the Werner-Schmid method was found to be 2·5% of the mean fat content value. The method also enables the mean fat globule diameter to be determined.

Ion Exchange Separations and Atomic Absorption Determination of Trace Metals in Ores after Basic Fusion

1972 ◽  
Vol 26 (2) ◽  
pp. 302-305 ◽  
Author(s):  
T. W. Freudiger ◽  
C. T. Kenner
Keyword(s):  
Standard Deviation ◽  
Ion Exchange ◽  
Metal Ions ◽  
Atomic Absorption ◽  
Strong Acid ◽  
Ion Exchange Resin ◽  
High Concentration ◽  
The Mean ◽  
Trace Constituents

The determination of trace constituents in ores by atomic absorption after basic fusion and solution in strong acid is erratic due to the light scattering and aspirator clogging of the high concentration of sodium salts. The sodium is separated from the trace constituents using a column procedure and an iminodiacetate chelating ion exchange resin which will retain di- and trivalent metal ions at pH values above 6.0 but will not retain alkali metal ions. The trace constituents are determined by atomic absorption after elution with HCl. The precision (standard deviation of the mean) of the atomic absorption method is increased at least fivefold by the resin separation and the method is applicable to concentrations in the low ppm range. The standard deviation of the mean for an NBS sample containing 0.007% Cu is 0.0004%.

scholarly journals Pengaruh Kepercayaan Diri dan Kemampuan Komunikasi Matematika Terhadap Hasil Belajar Matematika Siswa

2021 ◽  
Vol 1 (2) ◽  
pp. 122-131
Author(s):  
Putu Sri Indah Yulia Dewi ◽  
Nani Kurniati ◽  
Wahidaturrahmi Wahidaturrahmi
Keyword(s):  
Data Analysis ◽  
Learning Effect ◽  
Mathematics Learning ◽  
Learning Outcome ◽  
Coefficient Of Determination ◽  
Self Confidence ◽  
8Th Grade ◽  
Communication Ability ◽  
And Mathematics

This research aims to find out the influence of self-confidence on students’ mathematics learning outcome, the influence of mathematics communication ability on students’ mathematics learning effect, and the influence of self-confidence and mathematics communication ability on students’ mathematics learning outcome of 8th grade SMPN 22 Mataram academic year 2019/2020. This type of research was ex post facto. The sample of this research were 44 students with total sampling technique. Data collection techniques in this reseacrh using questionnaire, test and documentation. The instrument of this research was in the form of a confidence questionnaire, a test of mathematics communication ability, and documentation of students’ mathematics learning outcome of 8th grade SMPN 22 Mataram. From the data analysis obtained, there was no influence of self-confidence on students’ mathematics learning effect of 8th grade SMPN 22 Mataram. Whereas for mathematics communication ability there was found an influence on students’ mathematics learning effect of 8th grade SMPN 22 Mataram with the coefficient of determination of 83.7%. The results of data analysis also showed that there was a significant influence between students' self-confidence and mathematics communication ability on students’ mathematics learning effect of 8th grade SMP 22 Mataram with the coefficient of determination of 83.1%.

scholarly journals OPTIMIZING STUDENTS’ READING COMPREHENSION OF DESCRIPTIVE TEXT THROUGH E-LEARNING METHOD WITH WHATSAPP APPLICATION AT STUDENTS OF SMA NEGERI 1 BUKO

2021 ◽  
Vol 9 (1) ◽  
pp. 1-16
Author(s):  
Yustira Kharlina Tangiduk ◽  
Nurmin Samola ◽  
Rinny Rorimpandey
Keyword(s):  
Reading Comprehension ◽  
Data Analysis ◽  
Standard Deviation ◽  
Frequency Distribution ◽  
Multiple Choice ◽  
Learning Method ◽  
Multiple Choice Questions ◽  
E Learning ◽  
The Mean ◽  
Academic Year

This study aims to determine whether the E-learning method can be effective in optimizing students' reading comprehension of descriptive text with WhatsApp Application. This research was conducted in class X MIA 1 SMA Negeri 1 Buko in the academic year of 2020/2021. This study used one group-pretest-postest design of research with the data analysis were the frequency distribution of scores, mean and standard deviation. The questions from the pretest and posttest used the type of multiple choice questions with questions about the descriptive text. From this result, it was found that the mean of posttest Y = 7.8 with standard deviation Sy = 0.79 was higher than mean score at pretest X = 5.33 with standard deviation Sx = 0.89. It means that students' reading comprehension in descriptive text was higher after treatment at posttest than pretest. So the researcher concluded that the application of the E-learning method through WhatsApp application was effective in optimizing students' reading comprehension of descriptive text.

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