Narrow Results

The following sections are included:

• INTRODUCTION

• MEASURES OF CENTRAL TENDENCY
  • The Arithmetic Mean
  • The Geometric Mean
  • The Median
  • The Mode³

• MEASURES OF DISPERSION
  • The Variance and the Standard Deviation
  • The Mean Absolute Deviation
  • The Range
  • The Coefficient of Variation

• MEASURES OF RELATIVE POSITION
  • Percentiles, Quartiles, and Interquartile Range
  • Box and Whisker Plots: Graphical Descriptions Based on Quartiles
  • Z Scores

• MEASURES OF SHAPE
  • Skewness
  • Kurtosis

• CALCULATING CERTAIN SUMMARY MEASURES FROM GROUPED DATA (Optional)
  • The Mean
  • The Median
  • The Mode
  • Variance and Standard Deviation
  • Percentiles

• APPLICATIONS
  • Statistical Analysis of a Soda Survey
  • Stock Rates of Return for GM, Ford, and the Market
  • 3-Month Treasury Bill Rate and Prime Rate
  • GNP, Personal Consumption, and Disposable Income

• Summary

• Appendix 4A Short-Cut Formulas for Calculating Variance and Standard Deviation

• Appendix 4B Short-Cut Formulas for Calculating Group Variance and Standard Deviation

• Appendix 4C Financial Ratio Analysis for Three Auto Firms
  • Current Ratio
  • Inventory Turnover Ratio
  • Total Debt/Total Asset Ratio
  • Net Profit Margin
  • Return on Total Assets
  • Price/Earnings (P/E) Ratios
  • Payout Ratio

• Questions and Problems

• Project I Project for Descriptive Statistics