Statistical Methods in Food and Consumer Research

1 INTRODUCTION

1.1 A Brief Review of Tools for Statistical Interference

1.2 Principles of Experimental Design

1.3 The Role of the Statistician in Research
Exercises


2 STATISTICAL SENSORY TESTING

2.1 Psychophysical Aspects of Sensory Data

2.2 Scales of Measurement

2.3 Scale Structures

2.4 Construction of a Scale

2.5 Distribution of Sensory Data

2.6 Selection of Panel Members
Exercises


3 THE ANALYSIS OF VARIANCE AND MULTIPLE COMPARISON TESTS

3.1 Analysis of Variance

3.2 Multiple-Comparison Tests

3.3 Sample Size Estimation
Exercises


4 EXPERIMENTAL DESIGN

4.1 Simple Comparative Experiments

4.2 Completly Randomized Designs

4.3 Randomized Complete Block Designs

4.4 Latin Square Designs

4.5 Cross-Over Designs

4.6 Split Plot Designs
Exercises


5 INCOMPLETE BLOCK EXPERIMENTAL DESIGNS

5.1 Balanced Incomplete Block Designs

5.2 Balanced Incomplete Block Designs Augmented with a Control

5.3 Doubly Balanced Incomplete Block Designs

5.4 Composite Complete-Incomplete Block Designs
Exercises


6 FACTORAL EXPERIMENTS

6.1 The 2n Factorial Experiments

6.2 The 3n Factorial Experiments

6.3 The p x q and p x q x k Factorial Experiments

6.4 Simple Confounding and Fractional Factoral Experiments
Exercises


7 RESPONSE SURFACE DESIGNS AND ANALYSIS

7.1 General Concepts

7.2 Fitting of Response Surfaces and Some Design Considerations

7.3 Illustrations of Fittings of First- and Second-Order Models

7.4 Composite Designs

7.5 Rotatable Designs

7.6 A Response Surface Analysis Approach for Sensory Data
Exercises


8 SHELF LIFE TESTING EXPERIMENTS

8.1 Hazard Function

8.2 Shelf Life Models

8.3 Regression Analysis
Exercises


9 NONPARAMETRIC STATISTICAL METHODS

9.1 Some Methods for Binary Data

9.2 Some Methods Based on Ranks

9.3 Some Methods for Categorical Data

9.4 Multidimensional Contingency Tables
Exercises


10 SENSORY DIFFERENCE AND SIMILARITY TESTS

10.1 Sensory Difference Tests

10.2 Sensory Similarity (Equivalence) Tests

10.3 Replicated Difference and Similarity Tests
Exercises


11 THE METHOD OF PAIRED COMPARISONS IN SENSORY TESTS AND THURSTONIAN SCALING

11.1 Paired Comparison Designs

11.2 Paired Comparison Models

11.3 Thurstonian Discriminal Difference d'

11.4 Area Under ROC Curve and R-Index
Exercises


12 DESCRIPTIVE ANALYSIS AND PERCEPTUAL MAPPING

12.1 Descriptive Analysis

12.2 Consumer Tests

12.3 Hedonic and Intensity Rating Scales

12.4 Perceptual Mapping

12.5 Perference Mapping
Exercises


13 SENSORY EVALUATION IN COSMETIC STUDIES

13.1 Experimental Designs

13.2 Regression Analysis
Exercises