Simplified Biostatistics

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by Abubakar Asaad

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Simplified Biostatistics

Simplified Biostatistics

by Abubakar Asaad

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Biostatistics is one of the required courses for those undergraduate students who wanted to pursue a career in medicine, nursing, dentistry, public health, and graduate students in biological and medical sciences. Students keep on consulting from one professor to another or from one friend to another regarding their statistical methods. Majority of the students fi nd diffi culty in determining the appropriate statistical methods. Thus, this book was conceived to help remedy their diffi culty in statistical analysis.

This simplifi ed biostatistics is written for students, beginning graduate students, and professionals in health disciplines. This book is concise and complete and is intended for one-semester course or two-semester courses. A previous statistics course may be helpful but is not required. Based on the author’s experience as a classroom teacher, students who have taken previous statistics course may sometimes, become “rusty” and hence could benefit from the use of this book.

This simplifi ed biostatistics contains 15 chapters. The materials in the fi rst 6 chapters deal with introduction and descriptive statistics; Chapters 7 and 8 on probability, serves as the link between the descriptive and inferential parts; Chapter 9 on sampling distributions; Chapter 10 on estimation; Chapter 11 on hypothesis testing; Chapter 12 on analysis of variance; chapter 13 on regression and correlation analysis; Chapter 14 on chi-square; and Chapter 15 on nonparametric statistics. Each chapter ends with exercises and review questions that serve as follow-up and had been incorporated for the benefi t of the users.

The statistical computations, especially those that require the use of complicated methods, usually make use of specialized statistical software packages like SAS, SPSS, STATA, MINITAB, and others. To a large extent, there are no major differences in the capabilities of the various statistical packages. In this book, the samples of STATA output are incorporated throughout the book to reinforce hand computations. All graphs in this book were also obtained using STATA software, except for skewness, which was obtained using SPSS.

Although much time had been spent in the preparation of this book, the author still recognizes its limitations and admits that errors may be observed. With these, the author with all humility, welcomes and encourages suggestions and comments from the readers for future revisions.

The author is indebted to his mentors, editors, reviewers, colleagues, friends, and many students for their help and feedback, and above all, to Almighty “ALLAH” for the wisdom, the strength, the courage, and the determination in coming up with this book.

Author(s)A. Asaad
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