NAME:  Fiber Strength
TYPE:  Sample
SIZE:  15 observations, 8 variables

DESCRIPTIVE ABSTRACT:
Three different machines produce a monofilament fiber for a textile
company.  The process engineer is interested in determining if there is
a difference in the breaking strength of the fiber produced by the three
machines.  However, the strength of a fiber is related to its diameter,
with thicker fibers being generally stronger than thinner ones.  A
random sample of five fiber specimens is selected from each machine.

SOURCES:
 Montgomery, D.C.  Design and Analysis of Experiments, 4th edition. 
    Example 4-4, pages 155 - 164.

VARIABLE DESCRIPTIONS:

 1. Strength: Fiber Strength (in pounds)
 2. Diameter: Fiber Diameter (in 1/1000 of an inch)
 3. Machine
 4. Mach1 (indicator for machine 1)
 5. Mach2 (indicator for machine 2)
 6. Mach3 (indicator for machine 3)
 7. DMach1 = Diameter*Mach1
 8. DMach2 = Diameter*Mach2