Chapter 7:  Describing Multivariate Data

Introduction
 
Management Scenarios and Data Sets

 
Table 7.1 page 251
 
Cross Sectional Analysis

Mixed Table 7.2 Creativity techniques

 
One-Way Table by descriptive statistics and quartile function
Multiple Box Plot

Qualitative  Table 7.3 Gender & Promotion


Two-Way Table by pivot table
Row and Column Percentages
Intervening Variables (Three-Way) (Employee: gender, promotion, IB class)

Quantitative  Table 7.4 Market Shaer


Scatter Diagram


 
Circle vs. Ellipse test


Correlation Coefficient



Covariance in 4 quadrants


Identifying Trends



Slope & Intercept
Linear Trend Line
Nonlinear Trend Lines
The Least Squares Criterion


Clusters: a sign of intervening variables.
 
Quantitative Time-Ordered Analysis 


Scatter diagrams without lag  Table 7-5 Widget Market Share
Scatter diagrams with lag
Cross-Correlation
Autoregression Table 7.6 Gadgets Sold
 
Correlation Matrix
Table 7.4 Market Shaer
 
Summary