Which of the following is a major element of the ISO 9000 quality management system standards?
Answer(s): D
ISO 9000:2008 provides a model for quality assurance programs. It requires an entity to demonstrate its ability to increase customer satisfaction through improving the QMS and ensuring conformity with requirements.
In the standard regression equation y- a + bx, how is the letter £> best described?
In the standard regression equation, b is the slope of the regression line.
How is the letter x in the standard regression equation best described?
Answer(s): A
The letter x in the standard regression equation is the independent variable. For example, in a regression to determine the total cost of production, x equals units produced.
A division uses a regression in which monthly advertising expenditures are used to predict monthly product sales (both in millions of US dollars). The results show a regression coefficient for the independent variable equal to 0.8. This coefficient value indicates that:
Answer(s): C
The regression coefficient represents the change in the dependent variable corresponding to a unit change in the independent variable. Thus, it is the slope of the regression line, represented by b in the linear equation y= a + bx.
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