回归统计分析.pdf

: .



M<MdiMean < Median

Positively skewedd








/
Negatively skewedd

This means that the data is
symmetitrica lly ditibtdistribute d.
Zero skewness
mode=median=meanChapter 12
• Review
• Chapter 12:  – scatter diagrams
•scatter diagrams
•dependent /  – dependent / independent variables
independent
variables – regression analysis
•regression analysis
•Least‐squares  – Least‐squares estimating equation
estimating equation
•the coefficient of  – the coefficient of determination
determination
•the coefficient of  – the coefficient of correlation
correlationRegression and Correlation
• Review Analyses
• Chapter 12: 
•scatter diagrams – How to determine both the nature and the 
•dependent /  strength of a relationship between variables. 
independent variables
•regression analysis
•Least‐squares 
estimating equation
•the coefficient of 
determination
•the coefficient of 
correlation : .
IBS Statistics
Year 1 : .