تأثير حجم العينة و توزيع المجتمع على قوة الاختبار الإحصائي : للعينتين المستقلتين و المرتبطتين (t)‎ حالة اختبار

Joint Authors

حمدي، أحمد محمد عبد الله
بريمة، أشرف حسن إدريس

Source

مجلة العلوم و التقانة : العلوم الطبيعية و الطبية

Issue

Vol. 16, Issue 2 (30 Sep. 2015), pp.125-137, 13 p.

Publisher

Sudan University of Science and Technology Deanship of Scientific Research

Publication Date

2015-09-30

Country of Publication

Sudan

No. of Pages

13

Main Subjects

Mathematics

Topics

Abstract EN

The study aimed to power of statistical testing is important for every researcher using statistical inference testing.

Studies using statistical tests are less powerful than the robustness of sstatistical testing.

The former will lead to indecisive conclusions regardless of efforts and time spent on data collection and analysis.

the statement of the problem is that there are no certain approaches to determine the characteristics of statistical testing.

The absence of these methods will not help increase the power of statistical testing and hence errors related to findings are possible.

The paper therefore aims to investigate the scientific concept of the power of sstatistical testing.

descriptive and inductive methods were adopted for data analysis.

The paper investigates the concept robustness of statistical testing and factors affecting the increase of power of statistical testing.

10,000 words have randomly been created using Pass 12 software programme.

Random samples of different sizes have been used, and the researcher has concluded that the power increase when the sample increases and that population sampling distribution affects the power of statistical testing.

the researcher has also concluded the difference between means will also affect statistical power and that normally distributed data is more powerful than non normally disturbed one in case of small sample.

in case of the independent and systematically distributed data, a large sample is required compared to dependent sample.

in logistically distributed data, the independent samples requires greater volume than the dependent one while in normally distributed data, the volume is the same.

Arriving at suitable sample volume will increase the power of statistical test while the use estimate will lead to less standard deviation and good distribution of the population.

all these will reduce the value of skewness coefficient and then increase statistical power.

Statistic test is important because it increases power of statistical test, so assessing the power of statistical test is significant as it provides researchers with important information.

American Psychological Association (APA)

بريمة، أشرف حسن إدريس وحمدي، أحمد محمد عبد الله. 2015. تأثير حجم العينة و توزيع المجتمع على قوة الاختبار الإحصائي : للعينتين المستقلتين و المرتبطتين (t) حالة اختبار. مجلة العلوم و التقانة : العلوم الطبيعية و الطبية،مج. 16، ع. 2، ص ص. 125-137.
https://search.emarefa.net/detail/BIM-674776

Modern Language Association (MLA)

بريمة، أشرف حسن إدريس وحمدي، أحمد محمد عبد الله. تأثير حجم العينة و توزيع المجتمع على قوة الاختبار الإحصائي : للعينتين المستقلتين و المرتبطتين (t) حالة اختبار. مجلة العلوم و التقانة : العلوم الطبيعية و الطبية مج. 16، ع. 2 (2015)، ص ص. 125-137.
https://search.emarefa.net/detail/BIM-674776

American Medical Association (AMA)

بريمة، أشرف حسن إدريس وحمدي، أحمد محمد عبد الله. تأثير حجم العينة و توزيع المجتمع على قوة الاختبار الإحصائي : للعينتين المستقلتين و المرتبطتين (t) حالة اختبار. مجلة العلوم و التقانة : العلوم الطبيعية و الطبية. 2015. مج. 16، ع. 2، ص ص. 125-137.
https://search.emarefa.net/detail/BIM-674776

Data Type

Journal Articles

Language

Arabic

Notes

يتضمن مراجع ببليوجرافية : ص. 136-137

Record ID

BIM-674776