This chapter discusses several topics, from why statistics is important in anthropological research to statistical notation. The first section (statistics and scientific enquiry) defines basic scientific terms and explains the role of statistics in anthropological research. The second section (basic definitions) reviews the vocabulary we need for the rest of the book. The third section (statist...

Provided that the data show that a compound is safe, it is the primary efficacy analysis that determines whether the compound is approved. The secondary analyses support, clarify and confirm, but only one prospectively planned efficacy analysis can be primary in support of an effectiveness claim for a given trial. Why should this be so? And how can we design the trial and set up the primary eff...

Because the field of statistics has become so important in medicine, it is well worth the time of a physician in nuclear medicine to become acquainted with the lan guage of statistics, the elementary concepts, and a few of the more commonly used procedures. For this purpose we are presenting these essentials in a series of six short, nontechnical papers. Obviously, what can be accom plished in ...

Descriptive statistics include measures of central tendency and variability. Measures of central tendency include mean, median, and mode. The mean is the arithmetic average of data from interval or ratio scales. The median reflects the 50th percentile score. The mode is the most frequently occurring value of a data distribution. Measures of variability include range, interquartile range, standa...