Summary
Contents
KEY FEATURES: Focuses on the meaning of statistics and why researchers choose particular techniques, rather than computational skills. Coverage ranges from basic descriptive statistics to more advanced topics such as tests of significance, measures of association, and regression analysis. An opening chapter provides a brief overview of the research process in social, behavioral, and health sciences.
What Are z Scores, and Why Are
They Important?
What Are z Scores, and Why Are They Important?
What Is a z Score?
A zscore or standard score is a value that denotes how many standard deviations away from the mean a particular raw score lies. This could be an indication of a raw score being either above or below the mean. A positive (+) z score is an indicator of a raw score that is greater than the mean. A negative (−) z score is an indicator of a raw score that is lower than the mean. As explained below, a z score that is neither positive nor negative, but equal to zero, is an indicator that the particular raw score happens to be equal to the value of the mean.
A raw score is the value of a particular case on ...