http://www.ck12.org Chapter 15. Concepts of Statistics
CHAPTER
15 Concepts of Statistics
Chapter Outline
15.1 Mean, Median and Mode
15.2 EXPECTEDVALUE ANDPAYOFFS
15.3 FIVENUMBERSUMMARY
15.4 GRAPHICDISPLAYS OFDATA
15.5 VARIANCE
15.6 THENORMALCURVE
15.7 LINEARCORRELATION
15.8 MODELING WITHREGRESSION
15.9 REFERENCES
Statistics is hugely important for understanding, describing and predicting the world around you. Descriptive
statistics is using summaries to present information that you have found to a reader. Summaries can be graphs
or small groups of numbers that are easier to understand than long lists of numbers. Inferential statistics is using
data to make predictions. Both inferential statistics and descriptive statistics help you understand the world around
you and communicate it effectively.