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Showing 1 to 20 of 1725 for “"t-test"”.

  1. Critical Values For The Two Independent Samples Winsorized T Test

    Farrell-Singleton, Piper Alycee2010

    … FOR THE TWO INDEPENDENT SAMPLES WINSORIZED T TEST</p> <p>by</p> <p>PIPER A. FARRELL-SINGLETON</p> <p>AUGUST 2010</p> <p>Advisor: Dr. Shlomo Sawilowsky</p> <p>Major: (Education, Evaluation and Research)</p> <p>Degree: Doctor of Philosophy</p> <p>Through Monte Carlo Simulation, this study …

    wayne-thes Repository record

  2. Approximate Vs. Monte Carlo Critical Values For The Winsorized T-Test

    Lance, Michael2011

    … for critical values for the Winsorized t test for independent samples to be based on adjusted degrees of freedom depending on the number of total non-Winsorized (approximate) values. Recently, a new such table of Winsorized critical values has been developed via approximate randomization …

    wayne-thes Repository record

  3. Robustness And Power Of The Kornbrot Rank Difference, Signed Ranks, And Dependent Samples T-Test

    Haidous, Norman2012

    … SIGNED RANKS, AND DEPENDENT SAMPLES T-TEST</strong> </p> <p>by</p> <p> <strong>NORMAN N. HAIDOUS</strong> </p> <p>December 2012</p> <p> <strong>Advisor:</strong>Dr. Shlomo S. Sawilowsky</p> <p> <strong>Major:</strong>Evaluation and Research - Statistics</p> <p> …

    wayne-thes Repository record

  4. Application of the sequential t-test algorithm for analysing regime shifts to the southern Benguela ecosystem

    Howard, James A EDepartment of Oceanography2007

    … series. A new method known as the sequential t-test algorithm for analysing regime shifts (STARS) is applied to a set of biological state variables and environmental and anthropogenic forcing variables in the southern Benguela.

    cape-town Repository record

  5. A comparison of the power of the Wilcoxon test to that of the t-test under Lehmann's alternatives

    Hwang, Chern-HwangKansas State University1984

    Typescript (photocopy).

    ksu-retro Repository record

  6. A comparison of the power of the Wilcoxon test to that of the t-test under Lehmann's alternatives

    Hwang, Chern-HwangKansas State University1984

    Typescript (photocopy).

    ksu Repository record

  7. Inferential Methods for High-Throughput Methylation Data

    Capparuccini, Maria2015

    … has been through use of a Filtered Two Sample t-test, using the recommended filter of 0.17 (Bibikova et al., 2006b). In this dissertation, we performed a re-analysis of the data used in recommending the threshold by fitting a mixed-effects ANOVA model. It was determined that the 0.17 filter is …

    vcu Repository record

  8. Effects of Hands-On Experiences on Student Achievement, Interest, and Attitude in Chemistry

    Adkins, Donna Gretchenn2020

    … school year. Historical data from five-unit tests were used to assess differences in mean achievement scores between test items aligned with hands-on laboratory experiences and test items aligned with computer-simulated experiences. An independent t-test and a paired t-test were used to …

    sfasu Repository record

  9. Analisis perbedaan abnormal retrum dan trending activity sebelim dan sesudah pengumuman stimulus the fed 19 September 2013: Study kasus pada Perusahaan LQ 45 di BEI

    Bachtiyar, AhmadUniversitas Islan Negeri Maulana Malik Ibrahim2014

    … digunakan adalah uji normalitas, One Sample t-Test, dan Paired Sample t-Test dengan catatan data yang digunakan memiliki distribusi yang normal. Berdasarkan hasil pengujian hipotesis menggunakan One Sample t-Test, penelitian ini menemukan fakta bahwa peristiwa pengumuman stimulus The Fed 19 …

    malang Repository record

  10. Pengaruh pencalonan Jokowi menjadi calon presiden 2014-2019 terhadap abnormal return dan trading volume activity di bursa efek Indonesia: Studi pada kelompok perusahaan LQ 45

    Husniyah, Ni'matulUniversitas Islan Negeri Maulana Malik Ibrahim2014

    … data yang digunakan meliputi uji O ne sample t-Test dan Pa ired Sa mple t-Test yang berfungsi untuk membuktikan adanya perbedaan sebelum dan sesudah peristiwa. Hasil dari penelitian ini menunjukkan bahwa peristiwa Pencapresan Jokowi mempengaruhi perubahan d i BEI dilihat dari sisi Abnormal …

    malang Repository record

  11. Experimental evaluation of monotonic and cyclic fracture behavior using disk-shaped compact tension test and released energy approach

    Na Chiangmai, ChaiwatUniversity of Illinois at Urbana-Champaign2015

    … using the disk-shaped compact tension (DC(T)) test and a released-energy based approach. The standard DC(T) test was revised to facilitate both monotonic and cyclic loading tests, including some modifications of the test geometry and testing modes. The research was motivated to explore possible …

    uiuc Repository record

  12. A study examining the effects of athletics on females' mathematical achievement

    Bieg, Genevieve M.2016

    … was made using an independent samples t-test.</p> <p>The design for this study was the use of a survey, data collection and an independent samples t-test. This study used the sample of forty-one sixth grade females. Each female attended the same middle school and had the same math …

    rowan Repository record

  13. The Effect of Repeated Read-Aloud Strategy on Preschool Children's Reading Comprehension

    Van Deren, Angela

    … a three week period and then analyzed using a t-test at the .05 level of significance. There was not a significant difference between the scores for Week 1, Week 2, or Week 3 for the control and experimental groups. Additionally, a Paired Samples t-Test was performed pairing the Class A …

    mo-state Repository record

  14. A study of selected disciplinary referrals and a report of disciplinary practices in three public junior high schools in Portsmouth, Virginia

    Owens, Theodore W.Virginia Polytechnic Institute and State University1982

    … were employed in the analysis of data: 1) t-test for differences in percentages, 2) Pearson r Correlation Coefficient, 3) t-test for correlation difference from zero, and 4) t-test for differences in proportion. Results suggest: 1) Treating Disruptive Classroom Behavior according to student …

    vt Repository record

  15. Differences in the effects of social stories in children with autism and Asperger's syndrome

    Mead, Stephanie S.2016

    … the whole group was analyzed by a one sample t-test. A t-test of two independent samples was used to evaluate whether or not a significant difference existed between the Autism group and the Asperger's Syndrome group in all three conditions. Results indicated that there was no significant …

    rowan Repository record

  16. A Study on the Relationship Between Participation in School-Sponsored Sports and Academic Achievement in High School

    Madjd-Sadjadi, Shereen

    … as the survey respondents. A matched pairs t-test, a regression slope t-test, and chi square tests were utilized to analyze the data. Findings suggested that there were no significant differences between the students grade point averages in participatory compared to non-participatory …

    dominican Repository record

  17. The robustness to non-normality of significance levels of the t and F tests

    Ho, Tsau-yiVirginia Polytechnic Institute1965

    A statistical test is called"robust" if it is insensitive to departures from the underlying assumptions, this term was introduced by Box (4). Theoretical study made by Gayen (13), (14) and (15) showed that"Student's" t-test and the closely related F-test of analysis of variance are insensitive to …

    vt Repository record

  18. The Effects of Preschool on Phonemic Awareness in First Grade

    Godsen, Debbie2002

    … score for each group was compared using a t test. The results of the t test show there is no statistically significant difference in mean scores on the Emergent Literacy Survey between first graders who attended preschool and first graders who had not attended preschool.

    brockport Repository record

  19. An empirical evaluation of multivariate sequential procedures for testing means

    Appleby, Robert HoustonVirginia Polytechnic Institute1960

    … of Multivariate Sequential Procedures for Testing Means as proposed by J. E. Jackson. This was done by simulated sampling from a multivariate normal population with known means, both when the variance-covariance matrix is assumed known (Sequential χ²-Test), and when it is assumed unknown …

    vt Repository record

  20. A Comparison of Physical Fitness Levels Attained Over a Two Year Period by Elementary School Children using Obstacle-Type Playground Equipment as Against Conventional Equipment

    Lithun, Douglas G.

    … included the matched sample and random sample t test. In using these two procedures, the matched sample t test was computed using a program of related t scores in matrix form for 30 variables with means and standard deviations. The random sample t test was also computed on an electronic computer …

    nodak Repository record

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