conditional test
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2022 ◽  
Author(s):  
Wenwen Guo ◽  
Wei Zhong ◽  
Sunpeng Duan ◽  
Hengjian Cui

2020 ◽  
Vol 1 (2) ◽  
pp. 69-80
Author(s):  
Nurani Nurani

learning activities to the ability of writing paragraph. This research was motivated by the fact in field that the ability of writing paragraph and learning activities and influence of using picture media and learning activities to the ability of writing paragraph at five grade students of SDN Tanjung Setia Pesisir Barat. To reach the purpose of the research above, the researcher use correlational methos, it means that the data collected after all the even happen. The techniques to collect the data are analitycal conditional test, statistical analyze, and research hypothesis test. The result of the research showed that (1) there is a positive and significant of using picture media and students’ to ability of writing paragraph with correlation coeffesient is 15,88, (2) there is positive and significant correlation coefficient is 13,70, (3) there is a positive and significant  influence of using picture media and learning activities to the ability of writing paragraph is 16,74.


2016 ◽  
Vol 55 (04) ◽  
pp. 367-372 ◽  
Author(s):  
Tim Friede ◽  
David Ellenberger

SummaryObjectives: Methods for change point (also sometimes referred to as threshold or breakpoint) detection in binary sequences are not new and were introduced as early as 1955. Much of the research in this area has focussed on asymptotic and exact conditional methods. Here we develop an exact unconditional test.Methods: An unconditional exact test is developed which assumes the total number of events as random instead of conditioning on the number of observed events. The new test is shown to be uniformly more powerful than Worsley’s exact conditional test and means for its efficient numerical calculations are given. Adaptions of methods by Berger andBoos are made to deal with the issue that the unknown event probability imposes a nuisance parameter. The methods are compared in a Monte Carlo simulation study and applied to a cohort of patients undergoing traumatic orthopaedic surgery involving external fixators where a change in pin site infections is investigated.Results: The unconditional test controls the type I error rate at the nominal level and is uniformly more powerful than (or to be more precise uniformly at least as powerful as) Worsley’s exact conditional test which is very conservative for small sample sizes. In the application a beneficial effect associated with the introduction of a new treatment procedure for pin site care could be revealed.Conclusions: We consider the new test an effective and easy to use exact test which is recommended in small sample size change point problems in binary sequences.


2011 ◽  
Vol 2 (1) ◽  
Author(s):  
Toshio Sumi ◽  
Toshio Sakata

We consider an exact sequential conditional test for three-way conditional test of nointeraction. At each time , the test uses as the conditional inference frame the set F(H ) of alltables with the same three two-way marginal tables as the obtained table H . For 33K tables,we propose a method to construct F(H ) from F(H􀀀1). This enables us to perform ecientlythe sequential exact conditional test. The subset S of F(H ) consisting of s + H 􀀀 H􀀀1 fors 2 F(H􀀀1) contains H , where the operations + and 􀀀 are dened elementwise. Our argumentis based on the minimal Markov basis for 3 3 K contingency tables and we give a minimalsubset M of some Markov basis which has the property that F(H ) = fs 􀀀 m j s 2 S ;m 2 Mg.


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