Conditional Tests with an Order Restriction as a Null Hypothesis

1986 ◽  
pp. 279-295 ◽  
Author(s):  
Peter C. Wollan ◽  
Richard L. Dykstra
Keyword(s):  
Null Hypothesis ◽  
Order Restriction ◽  
Conditional Tests

An Alternative to Cohen's κ

2006 ◽  
Vol 11 (1) ◽  
pp. 12-24 ◽  
Author(s):  
Alexander von Eye
Keyword(s):  
Simulation Study ◽  
Null Hypothesis ◽  
Categorical Variables ◽  
Alternative Measure ◽  
Rater Agreement ◽  
Verbal Processing ◽  
Heavy Tailed ◽  
Applicant Selection

At the level of manifest categorical variables, a large number of coefficients and models for the examination of rater agreement has been proposed and used. The most popular of these is Cohen's κ. In this article, a new coefficient, κ s , is proposed as an alternative measure of rater agreement. Both κ and κ s allow researchers to determine whether agreement in groups of two or more raters is significantly beyond chance. Stouffer's z is used to test the null hypothesis that κ s = 0. The coefficient κ s allows one, in addition to evaluating rater agreement in a fashion parallel to κ, to (1) examine subsets of cells in agreement tables, (2) examine cells that indicate disagreement, (3) consider alternative chance models, (4) take covariates into account, and (5) compare independent samples. Results from a simulation study are reported, which suggest that (a) the four measures of rater agreement, Cohen's κ, Brennan and Prediger's κ n , raw agreement, and κ s are sensitive to the same data characteristics when evaluating rater agreement and (b) both the z-statistic for Cohen's κ and Stouffer's z for κ s are unimodally and symmetrically distributed, but slightly heavy-tailed. Examples use data from verbal processing and applicant selection.

Proving the null hypothesis.

1991 ◽  
Vol 46 (10) ◽  
pp. 1089-1089 ◽  
Author(s):  
John J. Bartko
Keyword(s):  
Null Hypothesis

The inscrutable null hypothesis.

1998 ◽  
Vol 53 (7) ◽  
pp. 796-796 ◽  
Author(s):  
Warren W. Tyron
Keyword(s):  
Null Hypothesis

Television and the Null Hypothesis

1975 ◽  
Vol 20 (3) ◽  
pp. 212-213
Author(s):  
SEYMOUR FESHBACH
Keyword(s):  
Null Hypothesis

Nullifying the Null Hypothesis

1979 ◽  
Vol 24 (4) ◽  
pp. 299-301
Author(s):  
ALLAN E. PAULL ◽  
NEIL H. TIMM
Keyword(s):  
Null Hypothesis

The null hypothesis and the error of our ways

2001 ◽  
Vol 1 (2) ◽  
pp. 86-88
Author(s):  
Sylvia Wassertheil-Smoller
Keyword(s):  
Null Hypothesis

THE EFFECT OF COMIC STRIPS ON SECONDARY EFL STUDENTS’ READING COMPREHENSION AND WRITING ABILITY

2018 ◽  
Vol 2 (2) ◽  
pp. 43-57
Author(s):  
M. Ridhwan ◽  
Muhammad Taufik Ihsan ◽  
Naskah Naskah
Keyword(s):  
Reading Comprehension ◽  
Hypothesis Testing ◽  
Null Hypothesis ◽  
Test Group ◽  
T Test ◽  
Comic Strips ◽  
Writing Ability ◽  
Paired Sample ◽  
And Control ◽  
Test Treatment

The purpose of this study was to investigate the significant effect of using comic strips strategy toward students’ reading comprehension and writing ability at MTsN 1 Pekanbaru. A Quasi-Experimental by Non-equivalent Pre-test and Post-test Group was applied as a designed for study. The sample was two classes (VIII 3 and VIII 4) consisting 20 students of treatment class, and 20 students of control class. The data were computed using SPPS 20.0 to analyze Independent sample t-test and Paired sample t-test. The finding of this study revealed that there was a significant effect on students’ reading comprehension by using comic strips strategy, it shown on paired sample t-test; treatment class was 77 and control class was 64.5, the hypothesis testing showed the result of post T-test -7.149, then score of sig.(2-tailed) is 0.000, if we act to null hypothesis (Ho) that is 0.05, it means that the score of sig.(2-tailed) was smaller than score of Ho. The data also revealed that there was a significant effect on students’ writing ability, it shown on paired sample t-test; treatment class was 79.6 and control class was 54.2, the hypothesis testing showed the result of post T-test -21.9, then score of sig.(2-tailed) is 0.000, if we act to null hypothesis (Ho) that is 0.05, it means that the score of sig.(2-tailed) was smaller than score of Ho. Therefore, the null hypothesis was rejected and the alternative hypothesis was accepted. From those data it can be summarized that there is a significant effect of using comic strips strategy on students’ reading comprehension and writing ability.

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