Verma J., Abdel-Salam A.-S. Testing Statistical Assumptions in Research

Wiley, 2019. — 221 p. — ISBN: 978-1-119-52841-8.Comprehensively teaches the basics of testing statistical assumptions in research and the importance in doing soThis book facilitates researchers in checking the assumptions of statistical tests used in their research by focusing on the importance of checking assumptions in using statistical methods, showing them how to check assumptions, and explaining what to do if assumptions are not met.Testing Statistical Assumptions in Research discusses the concepts of hypothesis testing and statistical errors in detail, as well as the concepts of power, sample size, and effect size. It introduces SPSS functionality and shows how to segregate data, draw random samples, file split, and create variables automatically. It then goes on to cover different assumptions required in survey studies, and the importance of designing surveys in reporting the efficient findings. The book provides various parametric tests and the related assumptions and shows the procedures for testing these assumptions using SPSS software. To motivate readers to use assumptions, it includes many situations where violation of assumptions affects the findings. Assumptions required for different non-parametric tests such as Chi-square, Mann-Whitney, Kruskal Wallis, and Wilcoxon signed-rank test are also discussed. Finally, it looks at assumptions in non-parametric correlations, such as bi-serial correlation, tetrachoric correlation, and phi coefficient.An excellent reference for graduate students and research scholars of any discipline in testing assumptions of statistical tests before using them in their research study
Shows readers the adverse effect of violating the assumptions on findings by means of various illustrations
Describes different assumptions associated with different statistical tests commonly used by research scholars
Contains examples using SPSS, which helps facilitate readers to understand the procedure involved in testing assumptions
Looks at commonly used assumptions in statistical tests, such as z, t and F tests, ANOVA, correlation, and regression analysisTesting Statistical Assumptions in Research is a valuable resource for graduate students of any discipline who write thesis or dissertation for empirical studies in their course works, as well as for data analysts.About the Companion WebsiteImportance of Assumptions in Using Statistical TechniquesData Types
Assumptions About Type of Data
Statistical Decisions in Hypothesis Testing Experiments
Sample Size in Research Studies
Effect of Violating Assumptions
Exercises
AnswersIntroduction of SPSS and Segregation of DataIntroduction to SPSS
Data Cleaning
Data Management
Exercises
AnswersAssumptions in Survey StudiesAssumptions in Survey Research
Questionnaire’s Reliability
Exercise
AnswersAssumptions in Parametric TestsCommon Assumptions in Parametric Tests
Assumptions in Hypothesis Testing Experiments
F-test For Comparing Variability
Correlation Analysis
Regression Analysis
Exercises
AnswersAssumptions in Nonparametric TestsCommon Assumptions in Nonparametric Tests
Chi-square Tests
Mann-Whitney U Test
Kruskal-Wallis Test
Wilcoxon Signed-Rank Test
Exercises
AnswersAssumptions in Nonparametric CorrelationsSpearman Rank-Order Correlation
Biserial Correlation
Tetrachoric Correlation
Phi Coefficient (Φ)
Assumptions About Data
What if the Assumptions Are Violated?
Exercises
AnswersAppendix Statistical Tables