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Vkaiy EMS スタイルマット フットマット 【最新版】 EMSマシン...
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From Vkaiy
This report was last updated 8/3/2019.
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Report Card
Fail Overall Grade
FAIL
Deleted Reviews

FAIL
Suspicious Reviewers

FAIL
Reviewer Ease

FAIL
Word Count Comparison

FAIL
Overlapping Review History

WARN
Reviewer Participation

PASS
Rating Trend

PASS
Unverified Purchases

PASS
Brand Repeats

N/A
Phrase Repetition

N/A
Incentivized Reviews

Most Trusted Reviews
約一か月で動かなくなり... [Go to full review]
Jun 8, 2019
100%
TRUST
TRUST
-
Verified Purchaser
-
Critical Reviewer (avg. rating: 3.8)
Least Trusted Reviews
仕事が忙しすぎて運動す... [Go to full review]
Apr 27, 2019
0%
TRUST
TRUST
-
Verified Purchaser
-
Overrepresented word count (67 words)
-
Take-Back Reviewer (16 deleted Reviews; avg. rating: 4.8)
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Overlapping Review History: reviewed 1 of 9 top products
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Overrepresented Participation (posted 56 Reviews)
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Easy Grader (avg. rating: 4.8)
Analysis Details
Fail
Deleted Reviews

We discovered a total of 27 deleted Reviews for this product, with an average rating of 5. Even though deleted reviews don't affect the average rating, the fact that action was taken to delete reviews raises some red flags about the integrity of the reviews for the product as whole.
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.
Fail
Suspicious Reviewers

One-Hit Wonders
13 of the 285 reviewers have only reviewed this product. The One-Hit Wonders have rated this product an average of 2.5 while the reviewers who have posted more than one review 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.
Never-Verified Reviewers
3 of the 285 reviewers have never written a verified purchase review. The Never-Verified Reviewers have rated this product an average of 3.0 while the reviewers who have written at least one verified purchase review rated this product an average of 4.6. 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 4.6, 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.
4.6 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
-
- 88%
- 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 251 reviews (or 88%) are within an overrepresented word count group. These reviews have rated this product an average of 4.7, while all other reviews have rated this product an average of 3.2. 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.
Fail
Overlapping Review History

Reviewers of this product have ALSO reviewed the following products:
10% also reviewed:
2019最新版 Hihiccup USB 3.0外付け DVD... by Hihiccup
9% also reviewed:
Wellnice 外付けDVDドライブUSB 3.0 DVD... by Wellnice
9% also reviewed:
【2019最新版】 スマートウォッチ... by
8% also reviewed:
8000Pa ハンディ クリーナー,JackMo... by JackMo
8% also reviewed:
2019最新版 4000mAh... by FOYOUNG
8% also reviewed:
センサーライト 屋外... by HETP
7% also reviewed:
Kimitech ハンディクリーナー ハンド... by Kimitech
Does not include products
from the same brand
from the same brand
102 of the 285 reviewers have substantial overlapping product review history. These reviewers have rated this product an average of 5.0 while the reviewers who have a more unique product review history 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.
Warn
Reviewer Participation

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- 83%
- 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 236 reviewers (or 83%) are within an overrepresented participation group. This is an excessively high number of reviewers in overrepresented participation groups.
Pass
Rating Trend

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- 4%
- Created over 1 day
We counted 285 reviews for this product over the span of 126 days, an average of 2.3 reviews per day. If these reviews were created randomly, there would be a 99.9% chance that we would see 8 or fewer reviews on any given day.
However, we see the following 1 day exceeding this threshold:In total, we found that 10 reviews were created on just 1 day. This is within an acceptable range and it does not appear to be significantly affecting the overall rating for this product.
Pass
Unverified Purchases

6 of the 285 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
2 of the 285 reviewers have reviewed other products for this brand. This is within an acceptable range and it does not appear to be significantly affecting the overall rating for this product.
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.