1. Which of the following is the best description of variables data?
A. Number of students more than six feet tall in a classroom.
B. Ratio of damaged apples to perfect apples in a shipment.
C. Downward force required to cause a critical part to fail during a quality test.
D. Adequate strength of adhesive applied between two components
2. Which of the following statements is true?
A. For a variables control chart, n should be fairly large, frequently 50–300 observations.
B. For an attribute control chart, n is typically 5–10 observations, and rarely larger than 24.
C. For an attribute control chart, n should be large enough to include at least one defective unit.
D. None of the above.