Which is better efficiency or effectiveness?

Related questions

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4. Why do we evaluate?
5. What is efficacy in psychology?
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7. Do non competitive antagonists have efficacy?
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Tags

1. #efficient
2. #group
3. #small
4. #takes
5. #effectiveness
6. #efficiency
7. #longer
8. #outcome
9. #important
10. #effective
11. #getting
12. #describes
13. #things
14. #recognized
15. #often
16. #better
17. #rather