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アストロ 収納ケース 衣類用 グレー 不織布 活性炭 消臭 仕切り付き 171-46
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From アストロ
This report was last updated 7/22/2020.
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Report Card
Fail Overall Grade
FAIL Suspicious Reviewers
WARN Rating Trend
WARN Reviewer Ease
WARN Word Count Comparison
WARN Overlapping Review History
WARN Reviewer Participation
PASS Unverified Purchases
PASS Brand Repeats
PASS Deleted Reviews
N/A Phrase Repetition
N/A Incentivized Reviews
Most Trusted Reviews
User did not leave written text for this review. [Go to full review]
Mar 3, 2020
73%
TRUST
TRUST
- Verified Purchaser
- Overrepresented word count (0 words)
- Critical Reviewer (avg. rating: 1.5)
Least Trusted Reviews
User did not leave written text for this review. [Go to full review]
May 7, 2019
0%
TRUST
TRUST
- Verified Purchaser
- Created on a high volume day
- Overrepresented word count (0 words)
- Take-Back Reviewer (2 deleted Reviews; avg. rating: 5.0)
- Overlapping Review History: reviewed 3 of 9 top products
- Overrepresented Participation (posted 186 Reviews)
- Critical Reviewer (avg. rating: 3.5)
Analysis Details
Fail Suspicious Reviewers
One-Hit Wonders
5 of the 278 reviewers have only reviewed this product. The One-Hit Wonders have rated this product an average of 3.0 while the reviewers who have posted more than one review have rated this product an average of 4.3. Based on our statistical modeling, the discrepancy in average rating between these two groups is significant enough to believe that the difference is not due to random chance, and may indicate that there are unnatural reviews.
Take-Back Reviewers
131 of the 278 reviewers have had at least one of their past reviews for another product deleted. While this is more Take-Back Reviewers than we'd expect to see, it does not appear to have a significant impact on the overall rating.
Single-Day Reviewers
4 of the 278 reviewers have written multiple reviews but posted all of them on a single day. The Single-Day reviewers have rated this product an average of 5.0 while all other reviewers rated this product an average of 4.2. Based on our statistical modeling, the discrepancy in average rating between these two groups is significant enough to believe that the difference is not due to random chance, and may indicate that there are unnatural reviews.
Warn Rating Trend
-
- 5%
- Created over 3 days
We counted 278 reviews for this product over the span of 1,315 days, an average of 0.2 reviews per day. If these reviews were created randomly, there would be a 99.9% chance that we would see 3 or fewer reviews on any given day.
However, we see the following 3 days exceeding this threshold:In total, we found that 14 reviews were created on just 3 days. Although any days with a larger number of reviews than expected is suspicious, the discrepancy in ratings from reviews created on these high volume days and reviews created on other days isn't significant enough to rule out the possibility of it being due to random chance.
Warn Reviewer Ease
The ease score is the average rating for all reviews that a given reviewer submits. The average ease score for reviewers of this product is 4.4, while the average ease score for reviewers in this category is 4.2. While this discrepancy is rather large, it is not quite large enough to rule out the possibility of it being due random chance.
4.4 Product's Average Ease Score
4.2 Category's Average Ease Score
Read more about our Reviewer Ease test.
Warn Word Count Comparison
Word counts are approximated for Hanzi and Kanji
-
- 100%
- Have an overrepresented word count
In the graph above, we can see the distribution of review word counts for this product and the expected distribution for this category. We see the following 1 group with a statistically significant greater concentration than what we'd expect to see:In total, we found that 278 reviews (or 100%) are within an overrepresented word count group. This is an excessively high number of reviews in overrepresented word count groups.
Warn Overlapping Review History
Reviewers of this product have ALSO reviewed the following products:
41% also reviewed:
... by プリマソーレ(primasole)
41% also reviewed:
BackJoy(バックジョイ)... by BackJoy(バックジョイ)
24% also reviewed:
... by プリマソーレ(primasole)
21% also reviewed:
クモリ(Kumori) ボックスシーツ... by クモリ(Kumori)
20% also reviewed:
ザムスト(ZAMST) ひざ 膝 薄型... by ザムスト(ZAMST)
18% also reviewed:
【Amazon限定ブランド】... by モアプレッシャー(More Pressure)
18% also reviewed:
ブラウン オーラルB 電動歯ブラシ... by ブラウン(BRAUN)
17% also reviewed:
ルシードエル オイルトリートメント... by LUCIDO-L(ルシードエル)
Does not include products
from the same brand
from the same brand
177 of the 278 reviewers have substantial overlapping product review history. While this is more than we'd expect to see, it does not appear to have a significant impact on the overall rating.
Warn Reviewer Participation
-
- 56%
- From reviewers with an overrepresented participation
We see the following 2 participation groups with a statistically significant greater concentration than what we'd expect to see:In total, we found that 156 reviewers (or 56%) are within an overrepresented participation group. This is an excessively high number of reviewers in overrepresented participation groups.
Pass Unverified Purchases
3 of the 278 total reviews for this product are unverified purchases. This is within an acceptable range and it does not appear to be significantly affecting the overall rating for this product.
Unverified purchases may be the result of Kindle Unlimited readers, buyers who didn't pay full price, or reviewers who did not purchase the product at Amazon. Read more about our Unverified Purchases test.
Pass Brand Repeats
Brand Repeaters
We didn't detect a substantial amount of Brand Repeaters.
Pass Deleted Reviews
- 0
- Reviews have been deleted
We have not discovered any deleted reviews for this product.
There are a few limitations to keep in mind regarding the Deleted Reviews test:
There are a few limitations to keep in mind regarding the Deleted Reviews test:
- We don't have a magic ability to collect every single deleted review; we can only identify reviews as deleted if we collect them on one date and then notice they are no longer visible on a subsequent date.
- We have no information on reviews that were never published in the first place.
- We also don't know why these reviews were removed. It could be action from the platform, personal decision by the review author, part of an entire account closure, even some data error on our part, etc.
N/A Phrase Repetition
We have not yet completed optimization for this test for Hanzi or Kanji.
N/A Incentivized Reviews
We have not yet completed optimization for this test for Hanzi or Kanji.