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美顔ローラー【2019最新版】Y字美容ローラー 小顔ローラー 美顔ローラー...
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This report was last updated 7/18/2019.
Refresh the report to view the most up-to-date data available:
Refresh the report to view the most up-to-date data available:
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Report Card
Fail Overall Grade
FAIL
Suspicious Reviewers

FAIL
Reviewer Ease

FAIL
Word Count Comparison

WARN
Rating Trend

WARN
Reviewer Participation

PASS
Unverified Purchases

PASS
Overlapping Review History

PASS
Brand Repeats

PASS
Deleted Reviews

N/A
Phrase Repetition

N/A
Incentivized Reviews

Most Trusted Reviews
商品が違ったのでしょう... [Go to full review]
May 2, 2019
100%
TRUST
TRUST
-
Verified Purchaser
-
Critical Reviewer (avg. rating: 0.5)
Least Trusted Reviews
温度が3段階調整機能が�... [Go to full review]
May 20, 2019
0%
TRUST
TRUST
-
Verified Purchaser
-
Take-Back Reviewer (17 deleted Reviews; avg. rating: 5.0)
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Overlapping Review History: reviewed 3 of 9 top products
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Easy Grader (avg. rating: 5.0)
Analysis Details
Fail
Suspicious Reviewers

Take-Back Reviewers
4 of the 386 reviewers have had at least one of their past reviews for another product deleted. The Take-Back Reviewers have rated this product an average of 4.0 while the reviewers who don't have any deleted reviews in their history have rated this product an average of 4.9. 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.
Fail
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 4.9, while the average ease score for reviewers in this category is 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.
4.9 Product's Average Ease Score
4.2 Category's Average Ease Score
Read more about our Reviewer Ease test.
Fail
Word Count Comparison

Word counts are approximated for Hanzi and Kanji
-
- 85%
- 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 3 groups with a statistically significant greater concentration than what we'd expect to see:In total, we found that 329 reviews (or 85%) are within an overrepresented word count group. These reviews have rated this product an average of 5.0, while all other reviews have rated this product an average of 4.7. 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

-
- 13%
- Created over 4 days
We counted 386 reviews for this product over the span of 148 days, an average of 2.6 reviews per day. If these reviews were created randomly, there would be a 99.9% chance that we would see 9 or fewer reviews on any given day.
However, we see the following 4 days exceeding this threshold:In total, we found that 51 reviews were created on just 4 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 Participation

-
- 37%
- From reviewers with an overrepresented participation
We see the following 1 participation group with a statistically significant greater concentration than what we'd expect to see:In total, we found that 141 reviewers (or 37%) are within an overrepresented participation group. While this is more reviews from overrepresented participation groups than we'd expect to see, these reviews do not appear to have a significant impact on the overall rating.
Pass
Unverified Purchases

18 of the 386 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
Overlapping Review History

Reviewers of this product have ALSO reviewed the following products:
8% also reviewed:
[進化版 IPX5完全防水] 白 Bluetooth... by iHarbort
7% also reviewed:
Kimitech ハンディクリーナー ハンド... by Kimitech
7% also reviewed:
Wellnice 外付けDVDドライブUSB 3.0 DVD... by Wellnice
7% also reviewed:
8000Pa ハンディ クリーナー,JackMo... by JackMo
6% also reviewed:
Gaosa イヤホン 最新版Bluetooth5.0... by Gaosa
5% also reviewed:
【2019進化版 金属仕様... by Sekuret
5% also reviewed:
Wellnice シューキーパー シューツリー... by
5% also reviewed:
【最新版】スマートウォッチ... by TUAYOO
Does not include products
from the same brand
from the same brand
110 of the 386 reviewers have substantial overlapping product review history. This is within an acceptable range and it does not appear to be significantly affecting the overall rating for this product.
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.