Understand How Working with Summary Values Affects Results

question 20

Multiple Choice

Understand how working with summary values affects results.
-Data were collected for a sample of companies regarding their investment in quality
Improvement efforts and cost savings realized as a result (both measured as a percentage
Of sales revenue) . The correlation coefficient for these data is r = .913. If the data were
Collected for individual departments within companies rather than at the company level,
We would expect

• A) a stronger correlation.
• B) a weaker correlation.
• C) the same correlation.
• D) fewer outliers in the data.
• E) None of the above.