©The McGraw-Hill Companies, Inc. 2008McGraw-Hill/统计学完整教学课件©The McGraw-Hill Companies, Inc. 2008McGraw-Hill/What is StatisticsChapter 1GOALS Understand why we study statistics. Explain what is meant by descriptive statistics and inferential statistics. Distinguish between a qualitative variable and a quantitative variable. Describe how a discrete variable is different from a continuous variable. Distinguish among the nominal, ordinal, interval, and ratio levels of measurement.What is Meant by Statistics?Statistics is the science of collecting, organizing, presenting, ...
