Question: CEOs of global corporations. Business Horizons (January-February 1993) conducted a comprehensive study of 800 chief executive officers who run the country's largest global corporations. The purpose of the study was to build a profile of the CEOs based on characteristics of each CEO's social background. Several of the variables measured for each CEO are listed here. Classify each variable as quantitative or qualitative.
(a) State of birth
(b) Age
(c) Education level
(d) Tenure with firm
(e) Total compensation
(f) Area of expertise