Exam answers for: Edd Saunders for May 18 2022 10:40:08


 

 

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1. An experiment demonstrates a 10% decrease in conversion rate at a 99% confidence level. In what way is this still a ‘win’?
Answer Provided: ? You’ve saved the business time and money which they might have by implementing this costly feature

 

Correct Answer: You’ve saved the business time and money which they might have by implementing this costly feature

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2. Which of the following is an example of scarcity?
Answer Provided: ? Only 7 left in stock.

 

Correct Answer: Only 7 left in stock.

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3. Which BEST describes why you should always define a “Test Hypothesis”
Answer Provided: ? To ensure you learn, no matter what the test outcome because the experiment will either prove or disprove your hypothesis

 

Correct Answer: To ensure you learn, no matter what the test outcome because the experiment will either prove or disprove your hypothesis

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4. What should you do if you want to experiment on a website with little traffic
Answer Provided: ? Test high-impact changes

 

Correct Answer: Test high-impact changes

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5. What is a “Bonferroni Correction”?
Answer Provided: ? A way to control for false positives when analyzing multiple metrics

 

Correct Answer: A way to control for false positives when analyzing multiple metrics

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6. Which is NOT a benefit of having “North Star Metric”?
Answer Provided: ? They have no sample size requirements

 

Correct Answer: They have no sample size requirements

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7. The “C” in “VOC” stands for which of the following?
Answer Provided: ? Customer

 

Correct Answer: Customer

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8. Which is a benefit of testing extreme changes?
Answer Provided: ? Generating stronger signals to measure

 

Correct Answer: Generating stronger signals to measure

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9. Which BEST describes an experiment “Hypothesis”?
Answer Provided: ? An educated guess as to what will happen during your experiment

 

Correct Answer: An educated guess as to what will happen during your experiment

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10. Which of the following is NOT an example of urgency?
Answer Provided: ? Customers like you also liked this.

 

Correct Answer: Customers like you also liked this.

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11. Which of the following is not a popular prioritization framework?
Answer Provided: ? SWOT

 

Correct Answer: SWOT

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12. What does “MVT” stand for?
Answer Provided: ? Multivariate Test

 

Correct Answer: Multivariate Test

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13. Which of the following BEST describes “statistical significance”?
Answer Provided: ? The probability the result observed was not due to random chance

 

Correct Answer: The probability the result observed was not due to random chance

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14. Which is NOT a factor in calculating sample size (in Frequentist statistics)?
Answer Provided: ? Time

 

Correct Answer: Time

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15. What can we learn from tests run on sites that aren’t our own?
Answer Provided: ? What worked for them and their audience

 

Correct Answer: What worked for them and their audience

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16. Which is a danger of following best practices?
Answer Provided: ? They may not work for you

 

Correct Answer: They may not work for you

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17. According to Cialdini, how many Principles of Persuasion are there?
Answer Provided: ? 6

 

Correct Answer: 6

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18. Which of the following defines is a Value Proposition / Unique Selling Proposition?
Answer Provided: ? It is that very reason which motivates a buyer to purchase that product even though it might be costlier than other products

 

Correct Answer: It is that very reason which motivates a buyer to purchase that product even though it might be costlier than other products

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19. Which of the following is a problem with last-touch attribution?
Answer Provided: ? It over-represents the impact of brand campaigns

 

Correct Answer: It ignores upper-funnel activities

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20. Which of the following describes a “Holdout Group”?
Answer Provided: ? A control group that does not get exposed to a treatment/variation

 

Correct Answer: A control group that does not get exposed to a treatment/variation

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21. What is a false negative?
Answer Provided: ? It is when you don’t detect an effect when one exists

 

Correct Answer: It is when you don’t detect an effect when one exists

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22. Which generally happens when testing many variants running at once?
Answer Provided: ? The power of your experiment decreases drastically

 

Correct Answer: The power of your experiment decreases drastically

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23. What is a Sample Ratio Mismatch?
Answer Provided: ? When the ratio of alpha and beta aren’t as expected

 

Correct Answer: The observed traffic split is statistically significantly different from what was expected

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24. What is “flicker”?
Answer Provided: ? When the contents of a variation visibily change during loading because your testing tool is overriding existing code

 

Correct Answer: When the contents of a variation visibily change during loading because your testing tool is overriding existing code

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25. Bayesian and Frequentist are which of the following?
Answer Provided: ? Schools of thought in statistics

 

Correct Answer: Schools of thought in statistics

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26. Which of the following does NOT describe what an “Experiment” is?
Answer Provided: ? A way to permanently change your website

 

Correct Answer: A way to permanently change your website

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27. What should you do before you run an experiment?
Answer Provided: ? All answers are correct

 

Correct Answer: All answers are correct

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28. What does “KPI” stand for?
Answer Provided: ? Key Performance Indicator

 

Correct Answer: Key Performance Indicator

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29. Which of the following is not one of Cialdini’s 6 Principles of Persuasion?
Answer Provided: ? Humour

 

Correct Answer: Humour

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30. If a program’s ratio of “successful” tests (aka “win rate”) to launched tests is constantly 50%, what should you suspect?
Answer Provided: ? The CRO is not testing meaningful hypotheses

 

Correct Answer: The CRO is not testing meaningful hypotheses

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