6 research outputs found

    Empirical Type 1 Error Rate and Power Comparisons of Normality Tests with R

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    Normality is one of the main presuppositions in statistical tests. The multiplicity of the normality tests bring out another problem of choosing the appropriate test for researchers. The free software R which has a great popularity in the statistical analysis has 18 normality tests in 4 different packages. In this study we compared performance of these normality tests in terms of empirical type 1 error rate and power by Monte Carlo simulation. As a result, regardless of the distribution of data (symetric or asymmetric) the Shapiro-Francia test, also the Frosini B test performed better than the other normality tests in terms of experimental type 1 error rate. However the widely used Kolmogorov-Smirnov test showed worse performance than other normality tests in terms of empirical type 1 error rate and power

    The statistical analysis of the amount of moisture which broad beans (vicia fab a l.) Take in their structure until they leaf out

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    Bu çalışmada Bakla ( Vicia faha L.) bitkilerinin tohumlarının toprak yüzüne çıkana kadar geçen sürede bitkilerin bünyelerine almış oldukları nem miktarları incelenmiştir. Bu çalışma, tesadüf parselleri deneme desenine göre yürütülmüştür. Denemede 69V1. Etae-77, Etae-339, Eresen-87 ve yerel populasyon deneme materyali olarak kullanılmıştır. Tohum ağırlığı ve nem miktarı ölçülmüştür. Ölçümler on bir farklı zamanda alınmıştır. Elde edilen bulgular istatistiksel olarak değerlendirilmiş ve elde edilen sonuçlar yorumlanmıştır

    The statistical analysis of the amount of moisture which broad beans (vicia fab a l.) Take in their structure until they leaf out

    No full text
    Bu çalışmada Bakla ( Vicia faha L.) bitkilerinin tohumlarının toprak yüzüne çıkana kadar geçen sürede bitkilerin bünyelerine almış oldukları nem miktarları incelenmiştir. Bu çalışma, tesadüf parselleri deneme desenine göre yürütülmüştür. Denemede 69V1. Etae-77, Etae-339, Eresen-87 ve yerel populasyon deneme materyali olarak kullanılmıştır. Tohum ağırlığı ve nem miktarı ölçülmüştür. Ölçümler on bir farklı zamanda alınmıştır. Elde edilen bulgular istatistiksel olarak değerlendirilmiş ve elde edilen sonuçlar yorumlanmıştır

    The statistical analysis of the amount of moisture which broad beans (vicia fab a l.) Take in their structure until they leaf out

    No full text
    Bu çalışmada Bakla ( Vicia faha L.) bitkilerinin tohumlarının toprak yüzüne çıkana kadar geçen sürede bitkilerin bünyelerine almış oldukları nem miktarları incelenmiştir. Bu çalışma, tesadüf parselleri deneme desenine göre yürütülmüştür. Denemede 69V1. Etae-77, Etae-339, Eresen-87 ve yerel populasyon deneme materyali olarak kullanılmıştır. Tohum ağırlığı ve nem miktarı ölçülmüştür. Ölçümler on bir farklı zamanda alınmıştır. Elde edilen bulgular istatistiksel olarak değerlendirilmiş ve elde edilen sonuçlar yorumlanmıştır

    Clinical study on the success of posterior monolithic zirconia crowns and fixed dental prostheses: preliminary report

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    Objective: The purpose of this report was to present preliminary clinical results regarding the success rates and technical outcomes of posterior monolithic zirconia single tooth crowns (STs) and fixed dental prostheses (FDPs). Materials and Method: Thirty-four patients received 43 posterior monolithic zirconia restorations as single tooth crowns (STs) and/or fixed dental prostheses (FDPs), which were fabricated using a CAD-CAM (Computer Aided Design - Computer Aided Manufacturing) system. At baseline and every 6 months, the restorations were examined for survival and technical outcomes. Success of the restorations was defined as the restoration remaining in situ, with no need for removal or replacement at follow-up visits. Technical outcomes were evaluated with a modified version of the United States Public Health Services criteria. Survival of restorations was estimated by using the Kaplan-Meier survival analysis. For each restoration, duration of follow-up was calculated from the time of placement to the date of its first failure. Results: After a mean observation period of 18.6 ± 3.9 months (between 8-24 months), cumulative survival rates were 86.7% and 92.3% for STs and FDPs, respectively. Technical evaluation revealed good marginal adaptation and crown contours; however, modifications were needed for shade and occlusion of restorations. Conclusion: These preliminary results revealed high survival rate and generally successful technical outcomes for posterior monolithic zirconia STs and FDPs
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