Difference between revisions of "Challenge F-09-A"
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| − | || '''Submission #1''' | + | || '''Submission #1''': Mar 20, 2021 |
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* [https://www.battleacts5.ca/Excel/Exam_5_Challenge_F-09-A_submission_01_MG.xlsx <span style="color: white; font-size: 12px; background-color: indigo; border: solid; border-width: 2px; border-radius: 10px; border-color: indigo; padding: 1px 3px 1px 3px; margin: 0px;">'''''Challenge F-09-A: Submission #1'''''</span>] | * [https://www.battleacts5.ca/Excel/Exam_5_Challenge_F-09-A_submission_01_MG.xlsx <span style="color: white; font-size: 12px; background-color: indigo; border: solid; border-width: 2px; border-radius: 10px; border-color: indigo; padding: 1px 3px 1px 3px; margin: 0px;">'''''Challenge F-09-A: Submission #1'''''</span>] | ||
| − | * '''Alice's Comments''': Congrats on being the first to submit an answer to this challenge! You have indeed constructed an example where the BF and ECR methods produce the same ultimate for your latest AY. So the conditions you listed in your answer seem to be <u>sufficient</u>. These conditions may not all be necessary however. I tried changing some of the numbers in your triangle to alter the stability of the development pattern and the BF ECR methods still produce the same answer. In any case, nice work! Since you've already won a coffee mug for exemplary contributions in the past, we can still send you a sticker. :-) | + | |
| + | * '''Alice's Comments''': Congrats on being the first to submit an answer to this challenge! You have indeed constructed an example where the BF and ECR methods produce the same ultimate for your latest AY. So the conditions you listed in your answer seem to be <u>sufficient</u>. These conditions may not all be necessary however. I tried changing some of the numbers in your triangle to alter the stability of the development pattern and the BF ECR methods still produce the same answer. In other words, there may be less restrictive conditions where BF still equals ECR. In any case, nice work! Since you've already won a coffee mug for exemplary contributions in the past, we can still send you a sticker. :-) | ||
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| + | || '''Submission #2''': Mar 23, 2021 | ||
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| + | * [https://www.battleacts5.ca/Excel/Exam_5_Challenge_F-09-A_submission_02_MG.xlsx <span style="color: white; font-size: 12px; background-color: indigo; border: solid; border-width: 2px; border-radius: 10px; border-color: indigo; padding: 1px 3px 1px 3px; margin: 0px;">'''''Challenge F-09-A: Submission #2'''''</span>] | ||
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| + | * '''Alice's Comments''': Thanks for the update MG! You correctly noticed that the final answers for the BF and ECR methods depend on the selected ECR. In your first submission above, the ECR was selected by formula based on a stable data set. In this submission, you allow the user to select a different ECR and depending on the selection, the final results of the BR and ECR methods are now potentially different. | ||
Latest revision as of 19:04, 28 March 2021
| Challenge: When will the estimate of ultimate from the ECR method equal the estimate from the BF method? |
- This is a completely open-ended question so try to give a comprehensive answer.
- The value is in taking the time to think through different scenarios carefully.
- A comprehensive answer might include both numerical and descriptive explanations for when the ECR and BF methods are likely to be the same.
| The first worthy answer wins a BattleActs logo coffee mug! The next 4 worthy submissions win BattleActs stickers! |
| Submission #1: Mar 20, 2021 |
- Alice's Comments: Congrats on being the first to submit an answer to this challenge! You have indeed constructed an example where the BF and ECR methods produce the same ultimate for your latest AY. So the conditions you listed in your answer seem to be sufficient. These conditions may not all be necessary however. I tried changing some of the numbers in your triangle to alter the stability of the development pattern and the BF ECR methods still produce the same answer. In other words, there may be less restrictive conditions where BF still equals ECR. In any case, nice work! Since you've already won a coffee mug for exemplary contributions in the past, we can still send you a sticker. :-)
| Submission #2: Mar 23, 2021 |
- Alice's Comments: Thanks for the update MG! You correctly noticed that the final answers for the BF and ECR methods depend on the selected ECR. In your first submission above, the ECR was selected by formula based on a stable data set. In this submission, you allow the user to select a different ECR and depending on the selection, the final results of the BR and ECR methods are now potentially different.
