1. DATA ANALYSIS AND STATISTICAL DESCRIPTION Sources and Arrangements of Data / Purposes of Data Analysis / Description of One Variable / Description of Two or More Variables / Age as an Independent Variable: Life-Cycle vs. Cohort Effects / Logarithms and Multiplicative Effects / Appendix: Measures of Centrality as Solutions to Decision Problems / Exercises on Interpreting Data / Worked Examples in Data Analysis Using Spreadsheets / Boston Edison vs. City of Boston / Hygiene Industries / The Stride-Rite Corporation (A) 2. SAMPLING AND STATISTICAL INFERENCE Introduction / Sampling in the Real World / Appendix: Elements of Sampling Theory / Exercises on Sampling and Statistical Inference 3. TIME SERIES Introduction / Concepts Used in Data Generation Rules / Two Data Generation Rules / What Comes Next? Exercises on Time Series / The Boston Gas Company: Winter 1980-81 / Appendix: The Moving-Average Temperature Distribution 4. FORECASTING WITH REGRESSION ANALYSIS Indistinguishable and Distinguishable Data / A Regression Model / Inputs to a Regression Analysis / Outputs from a Regression Analysis / Forecasts / Measures of Goodness of Fit / Transformed Variables / Using the Regression Utility / Doing Regression Analysis / Exercises on Forecasting with Regression / Chemplan Corporation: Paint-Rite Division / Harmon Foods, Inc / Highland Park Wood Company / CENEX / CFS Site Selection at Shell Canada Ltd. / Firestone Tire & Rubber Company: The Industry Replacement Passenger Tire Forecast / Data Resources, Inc.

: Note on Econometric Models 5. CAUSAL INFERENCE Introduction / What is Causation? Observational Data / An Example / Which Independent Variables Should Be Included? How to Identify the Relevant Independent Variables / Exercise on Causal Inference / The Gotham Giants / Nopane Advertising Strategy / Lincoln Community Hospital 6. MULTIPLICATIVE REGRESSION MODELS Introduction / An Example / Problems with the Linear Models / Summary / Exercise / Barbara J / Key vs. The Gillette Company (A) / Barbara J / Key vs. The Gillette Company (B).