This research aims to determine whether there are differences in stock prices, returns and abnormal before after a split high profile low companies. The period used this study was on 2016-2018. analyzed quantitative method by using purposive sampling method. Based the criteria, 40 companies were selected as samples. Kolmogorov Smirnov One Sample test for normality test. After carried out, data ...

This paper considers a model for the difference of two proportions in a paired or matched design of clinical trials, case-control studies and also sensitivity comparison studies of two laboratory tests. This model includes a parameter indicating both interpatient variability of response probabilities and their correlation. Under the proposed model, we derive a one-sided test for equivalence bas...

This study aims to get a real picture of the Capital Market Reaction Corona Covid-19 Virus Outbreak (Study on LQ-45 Companies Listed Indonesia Stock Exchange). The analytical tool used is descriptive statistical analysis and classical assumption test. To test hypothesis, it done using data in form Paired Sample T-Test program "Product Service Solution" (SPSS). results hypothesis testing paired ...

In some applications, an experimental unit is composed of two distinct but related subunits. The response from such a (X1,X2) we observe only Y1=min{X1,X2} and Y2=max{X1,X2}, i.e., the subunit identities are not observed. We call (Y1,Y2) unordered paired observations. Based on observations {(Y1i,Y2i)}i=1n, interested in whether marginal distributions for X1 X2 identical. Testing methods availab...

Permutation tests based on previously developed statistics are proposed for the case of mixed paired and two-sample designs. Different weighting schemes previous explored to understand strengths weaknesses each test. A simulation study compares power Type I error rates new with those developed. Rank-based generally performed as well or better than parametric statistics, particularly nonnormal d...

In order to circumvent the influence of correlation in paired-samples and repeated measures experimental designs, researchers typically perform a one-sample Student t test on difference scores. That procedure entails some loss of power, because it employs N – 1 degrees of freedom instead of the 2N – 2 degrees of freedom of the independent-samples t test. In the case of non-normal distributions,...

concentration in healthy subjects (n=10, ROI analysis, onesample t-test, uncorrected, p<0.001). Figure 1: Average olfactory activation at all 4 lavender concentrations in healthy subjects (n=10, one-sample t-test, familywise correction, p<0.05). Figure 2: Olfactory activation difference between two sequential runs of the same stimulation paradigm in healthy subjects (n=10, paired t-test, uncorr...