Statistics 9th Edition by Robert S. Witte and John S. Witte offers clear and methodical approach to important statistical procedures. The book clearly explains the basic concepts and procedures of descriptive and inferential statistical analysis. It features a new emphasis on expressions involving sums of squares and levels of freedom in addition to a stronger stress on the significance of variability.
This accessible strategy will assist business professional deal with such perennially mystifying subjects as the standard deviation, variance interpretation of the correlation coefficient, speculation assessments, degrees of freedom, p-values, and estimates of impact size. It continues to present a simple overview of descriptive and inferential statistics written in plain English.
Pointless math, intricate computations, and delicate technical distinctions are prevented without sacrificing accuracy or realism. With its wealth of pedagogical features, this text is ideal for serving to students gain the confidence they should use statistics of their everyday lives. Its pedagogical features include chapter Outlines, summaries, key terms, and marginal definitions with real-life in-chapter and finish-of-chapter exercises.
This book references to relevant Internet sites. Six appendices embrace answers to selected workout routines, math evaluate with self-diagnostic checks, glossary, and list of formulas. A self-paced, self-correcting workbook with issues, discussions, workout routines, and assessments is out there for students. There's expanded dialogue of Cohen's tips for effective dimension, with new determine (14.4) that illustrates the separation between pairs of normal curves for chosen impact sizes.
There's new part (19.12) on using the chances ratio to know the importance of statistically important chi-sq. tests. Chapter summaries have been expanded, every time acceptable, to include a list of key equations. Questions, examples, and computer outputs have been updated.
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