Chapter 5 · Data Analysis: A Concise Overview of Statistical Techniques · Slide 207/274
Lambda Coefficient
Sum of the maximum frequencies of all columns
5.2.2 · Strength of a RelationshipLambda · Calculation
Lambda Coefficient
Sum of the maximum frequencies of all columns
maximum total value of a row
r — row index
c — column index
| Internet Use | Gender | Total (row) | |
|---|---|---|---|
| Male | Female | ||
| r = 1rarely | 5 | 10 | 15 |
| r = 2often | 10 | 5 | 15 |
| Total (column) | 15c = 1 | 15c = 2 | n = 30 |
Knowing the gender increases prediction accuracy by a factor of 0.333, i.e. 33.3% improvement.
QUESTIONSTAR · Dr. Paul Marx207 / 274