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JMP® Means Business: Statistical Models for Management by Jane Oppenlander, Josef Schmee

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Chapter 10. Comparing Several Means with One-Way ANOVA

  • 10.1 Introduction 248

    • 10.1.1 Fixed-Effect One-Way ANOVA 249

    • 10.1.2 One-Way ANOVA Model 250

    • 10.1.3 One-Way ANOVA Hypotheses 250

    • 10.1.4 Sources of Variation 252

  • 10.2 Detail Example: Training Method and Time to Learn 253

  • 10.3 One-Way ANOVA in JMP 254

    • 10.3.1 One-Way ANOVA with Fit Y by X 254

    • 10.3.2 Interpretation of Results 258

    • 10.3.3 Means Comparisons 259

  • 10.4 Checking Assumptions of ANOVA Model 265

    • 10.4.1 Residuals 265

    • 10.4.2 Example: Stock Indices by Industry 267

    • 10.4.3 Side-by-Side Box Plots 269

    • 10.4.4 Tests for Unequal Variances 270

    • 10.4.5 Normal Quantile Plot of Residuals 271

  • 10.5 Summary 272

  • 10.6 Problems 273

  • 10.7 Case Study: Carpal Tunnel Release Surgery 276

10.1 Introduction

One-way analysis of variance ...

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