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業務用ヘアダイブラシ K-60 (ブラック)
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From サンビー工業株式会社
This report was last updated 6/17/2020.
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
Pass Overall Grade
WARN Deleted Reviews
WARN Reviewer Ease
WARN Word Count Comparison
WARN Reviewer Participation
PASS Rating Trend
PASS Unverified Purchases
PASS Suspicious Reviewers
PASS Overlapping Review History
PASS Brand Repeats
N/A Phrase Repetition
N/A Incentivized Reviews
Most Trusted Reviews
User did not leave written text for this review. [Go to full review]
Feb 16, 2020
73%
TRUST
TRUST
- Verified Purchaser
- Overrepresented word count (0 words)
- Take-Back Reviewer (5 deleted Reviews; avg. rating: 4.8)
- Overlapping Review History: reviewed 1 of 9 top products
- Critical Reviewer (avg. rating: 3.9)
Least Trusted Reviews
User did not leave written text for this review. [Go to full review]
Jun 14, 2020
38%
TRUST
TRUST
- Verified Purchaser
- Overrepresented word count (0 words)
- Overrepresented Participation (posted 22 Reviews)
- Easy Grader (avg. rating: 4.7)
Analysis Details
Warn Deleted Reviews
We discovered a total of 1 deleted Review 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.
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 4.3, 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.
4.3 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 248 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
-
- 36%
- 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 89 reviewers (or 36%) are within an overrepresented participation group. While this is more reviews from overrepresented participation groups than we'd expect to see, the discrepancy in ratings between reviewers in an overrepresented participation groups and all other reviewers isn’t significant enough to rule out the possibility of it being due to random chance.
Pass Rating Trend
-
- 3%
- Created over 2 days
We counted 249 reviews for this product over the span of 2,981 days, an average of 0.1 reviews per day. If these reviews were created randomly, there would be a 99.9% chance that we would see 2 or fewer reviews on any given day.
However, we see the following 2 days exceeding this threshold:In total, we found that 7 reviews were created on just 2 days. This is within an acceptable range and it does not appear to be significantly affecting the overall rating for this product.
Pass Unverified Purchases
1 of the 249 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 Suspicious Reviewers
One-Hit Wonders
13 of the 249 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
We didn't detect a substantial amount of Never-Verified Reviewers.
Take-Back Reviewers
8 of the 249 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
1 of the 249 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:
3% also reviewed:
RAVPower USB 充電器 2ポート 24W... by RAVPOWER
2% also reviewed:
ツインバード... by
2% also reviewed:
seiei ドアストッパー ネオガチット by セイエイ (Seiei)
2% also reviewed:
Verbatim バーベイタム 1回録画用 DVD-R... by バーベイタムジャパン(Verbatim Japan)
2% also reviewed:
Amazonベーシック... by Amazonベーシック(AmazonBasics)
2% also reviewed:
DHC... by DHC(ディー・エイチ・シー)
2% also reviewed:
パナソニック カナル型イヤホン... by パナソニック(Panasonic)
1% also reviewed:
Amazonベーシック 充電池... by Amazonベーシック(AmazonBasics)
1% also reviewed:
コニシ ボンド 裁ほう上手 45g #05371 by コニシ(Konishi)
30 of the 249 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.
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.