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山崎実業 マグネット シャワーホルダー バスルームシャワーフック...
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From 山崎実業(Yamazaki)
This report was last updated 2/20/2021.
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 Info:
Note: While Amazon.co.jp claims 0 Ratings, we counted 372 Reviews available on their site.
Note: We only analyze "reviews" and ignore one-tap "ratings".
Note: We only analyze "reviews" and ignore one-tap "ratings".
Report Card
Fail Overall Grade
FAIL Unverified Purchases
WARN Reviewer Ease
WARN Word Count Comparison
WARN Reviewer Participation
PASS Rating Trend
PASS Suspicious Reviewers
PASS Overlapping Review History
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]
Sep 5, 2019
73%
TRUST
TRUST
- Verified Purchaser
- Overrepresented word count (0 words)
- Critical Reviewer (avg. rating: 3.7)
Least Trusted Reviews
User did not leave written text for this review. [Go to full review]
Oct 21, 2019
0%
TRUST
TRUST
- Unverified Purchaser
- Overrepresented word count (0 words)
- Overrepresented Participation (posted 12 Reviews)
- Easy Grader (avg. rating: 4.5)
Analysis Details
Fail Unverified Purchases
4 of the 372 total reviews for this product are unverified purchases. The unverified purchasers have rated this product an average of 3.3 while the verified purchasers have 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.
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.
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 372 reviews (or 100%) are within an overrepresented word count group. This is an excessively high number of reviews in overrepresented word count groups.
Warn Reviewer Participation
-
- 66%
- 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 247 reviewers (or 66%) are within an overrepresented participation group. This is an excessively high number of reviewers in overrepresented participation groups.
Pass Rating Trend
-
- 1%
- Created over 1 day
We counted 372 reviews for this product over the span of 1,025 days, an average of 0.4 reviews per day. If these reviews were created randomly, there would be a 99.9% chance that we would see 4 or fewer reviews on any given day.
However, we see the following 1 day exceeding this threshold:In total, we found that 5 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 Suspicious Reviewers
One-Hit Wonders
11 of the 372 reviewers have only reviewed this product. This is within an acceptable range and it does not appear to be significantly affecting the overall rating for this product.
Never-Verified Reviewers
1 of the 372 reviewers have never written a verified purchase review. This is within an acceptable range and it does not appear to be significantly affecting the overall rating for this product.
Take-Back Reviewers
53 of the 372 reviewers have had at least one of their past reviews for another product deleted. This is within an acceptable range and it does not appear to be significantly affecting the overall rating for this product.
Single-Day Reviewers
7 of the 372 reviewers have written multiple reviews but posted all of them on a single day. This is within an acceptable range and it does not appear to be significantly affecting the overall rating for this product.
Pass Overlapping Review History
Reviewers of this product have ALSO reviewed the following products:
15% also reviewed:
[アイシャツ] i-shirt ボタンダウン... by i-Shirt(アイシャツ)のストアを表示
10% also reviewed:
... by
8% also reviewed:
BackJoy(バックジョイ)... by BackJoy(バックジョイ)
8% also reviewed:
アストロ 圧縮袋 5枚 衣類用... by アストロ
6% also reviewed:
アストロ 収納ケース 衣類用 グレー... by アストロ
6% also reviewed:
... by
6% also reviewed:
... by プリマソーレ(primasole)
5% also reviewed:
【Amazon.co.jp... by プリマソーレ(primasole)のストアを表示
4% also reviewed:
アストロ 羽毛布団 収納袋... by アストロ
43 of the 372 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
32 of the 372 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.
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.