Synopsis
It is observed that Researchers face a lot of difficulties in planning, design, collection, analysis and interpretation of Likert Scale data. Therefore, as an aid for the researchers it is attempted to write a book entitled ‘A Comprehensive Guide for Design, Collection, Analysis and Presentation of Likert and other Rating Scale Data’ on this subject with the following chapters 1. Basics of Likert Scale 2. General Issues of Likert Scaling 3. Templates for Creating Likert Scales 4. Basic Concepts of Measurement 5. Analysis of Likert Data 6. Appropriate Chart or Graph for Likert scale 7. Likert Scale Data Analysis with Statistical Software.This book discusses various efforts to identify, collect, analyse, improve, and present Likert data collected by rating scales such as Likert Scale. Most importunately the book illustrates, review, and critique several forms of collection, analysis, graphical presentation and interpretation of results from studies using rating scales. The most salient and striking features covered in this book are as followsDifferences between Likert-type or Likert scale dataLikert-type data is an ordinal data, therefore, non-parametric tests such as Mann Whitney-U test, Wilcoxon signed-rank test, Kruskal-Wallis test should be used in lieu of parametric tests.Likert scale data, on the other hand, are analysed as interval data. and analysis that can be performed includes mean for central tendency, standard deviations for variability, Pearson’s r for bivariate analysis, t-test and ANOVA for comparing group means, and regression procedures for associations.For Likert-type data mode or median is used for measuring central tendency and frequencies for variability. Analysis appropriate for ordinal scale items that includes the chi-square measure of association, Kendall Tau B, and Kendall Tau C.The dispute over the use of parametric versus non-parametric methods for the analysis of Likert scale ordinal data has raged for the past eight decades is discussed fully and suggested the right one.Focuses on validity, reliability and analysis of the Likert ScalePictorial display of several ways in which statistical data may be presented pictorially such as different types of graphs and diagrams is covered.Demonstration for Calculating Descriptive Statistics, Chi-Square Goodness-of-Fit, Mann-Whitney U Test, Sign Test, Wilcoxon-Mann-Whitney test and Cronbach's alpha with examples using SPSS.
About the Author
Awardwinning Key Note Speaker at International Level, Professor Ajit KumarRoy is an acclaimed researcher and consultant. Prof. Roy obtained hisM.Sc. degree in Statistics and joined Agricultural Research Service(ARS) of Indian Council of Agricultural Research (ICAR) as a Scientist (Statistics)in 1976. In recent past was engaged as National Consultant (Impact Assessment),for East &North-Eastern States of India at National Agricultural InnovationProject (World Bank funded) of ICAR. Earlier he had served as a Consultant(Statistics) at Central Agricultural University, Agartala. Earlier had servedat CIFA, ICAR, as Principal Scientist and was involved in applied research inthe areas of ICT, Statistics, Bioinformatics Analytics, and Economics. At Internationallevel, he served as a Computer Specialist at SAARC Agricultural InformationCentre (SAIC), Dhaka, Bangladesh for over 3 years.
The authorwith over 45 years of research and teaching experience in Statistical Analysis,Analytics, and information & Knowledge management edited twenty books andseveral conference proceedings. Besides, published over 100 articles in refereedjournals. His recent best-sellers are 'Big Dataand Data Science Initiative in India-Upcoming Job Opportunities(Vol.-2);' Bigdata Job Opportunities in India (Big Data-Series-4 Book 1);'Applied Big DataAnalytics'; 'Impact of Big Data Analytics on Business, Economy, Health Care andSociety'; 'Data Science - A Career Option for 21st Century'; 'Self-Learning ofBioinformatics Online.
Heis a Member, Organizing Committee Board for the 6th InternationalConference on 'Biometrics and Biostatistics' to be held during, November13-14, 2017 Atlanta, Georgia, USA. Editorial Board Member, Jacobs Journal ofBiostatistics, Jacobs Publishers, 900 Great Hills, Trail # 150 w, Austin,Texas. He now works as Visiting Professor, question setter and examiner of fourIndian Universities.
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