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Kumori Cool ひんやり 肌掛け布団 接触冷感 掛け布団 冷感&タオル地...
More product info From Kumori・クモリ

Amazon Reviews for  Kumori Cool ひんやり 肌掛け布団 接触冷感 掛け布団 冷感&タオル地 リバーシブル 掛けふとん 洗える キルトケット 抗菌・防臭・防ダニ 夏用 エアーケット タオルケット クールケット (ダブル・180X200cm, ブルー)
Rating:
0 Ratings
225 Reviews
("Ratings" vs. "Reviews")
0% of potentially unnatural reviews removed (why?)
Adjusted:
View/Edit Adjustment
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Report Info:
Last Updated: Jan 12, 2021
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Note: While Amazon.co.jp claims 0 Ratings, we counted 225 Reviews available on their site.
Note: We only analyze "reviews" and ignore one-tap "ratings".

Report Card

Fail Overall Grade
FAIL Reviewer Ease
WARN Rating Trend
WARN Suspicious Reviewers
WARN Word Count Comparison
PASS Unverified Purchases
PASS Overlapping Review History
PASS Reviewer Participation
PASS Brand Repeats
PASS Deleted Reviews
N/A Phrase Repetition
N/A Incentivized Reviews

Most Trusted Reviews

3/5
User did not leave written text for this review. [Go to full review]
Dec 31, 2019      
73% TRUST
  • Verified Purchaser
  • Overrepresented word count (0 words)
  • Brand Repeater (2 of 9 reviews for this brand; avg rating: 3.5)
  • Critical Reviewer (avg. rating: 2.6)


Least Trusted Reviews

5/5
User did not leave written text for this review. [Go to full review]
Jun 8, 2020      
0% TRUST
  • Verified Purchaser
  • Created on a high volume day
  • Overrepresented word count (0 words)
  • Brand Repeater (3 of 111 reviews for this brand; avg rating: 5.0)
  • Overlapping Review History: reviewed 6 of 9 top products
  • Critical Reviewer (avg. rating: 4.1)


Analysis Details

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 4.4, 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.

4.4 Product's Average Ease Score

4.2 Category's Average Ease Score


4.4
4.2


Read more about our Reviewer Ease test.


Warn Rating Trend

  • 33%
  • Created over 11 days

We counted 225 reviews for this product over the span of 580 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 11 days exceeding this threshold:In total, we found that 74 reviews were created on just 11 days. This is an excessively high number of reviews submitted on these high volume days.

from reviews created on high volume days

from reviews created on normal volume days


4.6
4.5


Read more about our Rating Trend test.

Warn Suspicious Reviewers

Take-Back Reviewers


86 of the 225 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.

from take-back reviewers

from reviewers without previously deleted reviews


4.5
4.6


Read more about our Suspicious Reviewers test.

Warn Word Count Comparison
Word counts are approximated for Hanzi and Kanji


  • 99%
  • 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 223 reviews (or 99%) are within an overrepresented word count group. This is an excessively high number of reviews in overrepresented word count groups.

from reviews with an overrepresented word count

from reviews with a properly represented word count


4.5
4.5


Read more about our Word Count Comparison test.

Pass Unverified Purchases

1 of the 225 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.

from unverified purchasers

from verified purchases


5.0
4.5


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:

26% also reviewed:
... by

Does not include products
from the same brand


101 of the 225 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.

from reviewers with substantial overlapping history

from reviewers without a substantial overlapping history


4.5
4.6


Read more about our Overlapping Review History test.

Pass Reviewer Participation

  • 24%
  • 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 53 reviewers (or 24%) are within an overrepresented participation group. This is within an acceptable range and it does not appear to be significantly affecting the overall rating for this product.

From reviewers with an overrepresented participation

From reviewers with a properly represented participation


4.5
4.6


Read more about our Reviewer Participation test.

Pass Brand Repeats

Brand Repeaters


17 of the 225 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.

from Brand Repeaters

from Non-Repeaters


4.5
4.5


Read more about our Brand Repeats test.

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:
  1. 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.
  2. We have no information on reviews that were never published in the first place.
  3. 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.
Read more about our Deleted Reviews test.

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.