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Six Sigma Green Belt Exam Prep

Category - Six Sigma Green Belt

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Sam’s Club executives noticed a strong, positive correlation between in-store promotions and the use of mail coupons. How does the increase of mail coupons affect in-store promotions?
  1. as more in-store promotions are conducted, more mail coupons are used
  2. there is no association between in-store promotions and mail coupons used
  3. as more in-store promotions are conducted, mail coupons are not affected
  4. as more in-store promotions are conducted, fewer mail coupons are used
Explanation
Answer: A - In a strong, positive correlation, as more in-store promotions are conducted, more mail coupons are used.
Key Takeaway: A positive correlation between two variables indicates that when they are observed in paired instances, they follow the same pattern in change. If one increases, the other does as well and vice versa.
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