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Kumori Cool ひんやり 敷きパッド 接触冷感 ベッドパッド 速乾タイプ 冷感...
More product info From Kumori・クモリ

Amazon Reviews for  Kumori Cool ひんやり 敷きパッド 接触冷感 ベッドパッド 速乾タイプ 冷感 マット シーツ 夏用 クールパッド 洗える 敷パッド 抗菌・防臭・防ダニ (セミダブル・120X200cm, ブルー)
Rating:
113 Ratings
113 Reviews
("Ratings" vs. "Reviews")
78% of potentially unnatural reviews removed (why?)
Adjusted:
View/Edit Adjustment
Jump to Report Card

Report Card

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

Most Trusted Reviews

偽レビューに注意してく... [Go to full review]
Jun 26, 2019      
60% TRUST
  • Verified Purchaser
  • Overrepresented word count (97 words)
  • Overrepresented Participation (posted 2 Reviews)
  • Critical Reviewer (avg. rating: 1.0)


Least Trusted Reviews

夏にはちょうど必要にな... [Go to full review]
May 27, 2019      
0% TRUST
  • Verified Purchaser
  • Created on a high volume day
  • Overrepresented word count (46 words)
  • Easy Grader (avg. rating: 5.0)


Analysis Details

Fail Rating Trend

  • 42%
  • Created over 9 days

We counted 113 reviews for this product over the span of 744 days, an average of 0.2 reviews per day. If these reviews were created randomly, there would be a 99.9% chance that we would see 3 or fewer reviews on any given day.

However, we see the following 9 days exceeding this threshold:In total, we found that 47 reviews were created on just 9 days. The reviews on these high volume days have rated this product an average of 4.8 while reviews from other days have rated this product an average of 4.4. 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.

from reviews created on high volume days

from reviews created on normal volume days


4.8
4.4


Read more about our Rating Trend test.

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


4.6
4.2


Read more about our Reviewer Ease test.


Fail Overlapping Review History
Reviewers of this product have ALSO reviewed the following products:

Does not include products
from the same brand


25 of the 113 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 4.4. 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.

from reviewers with substantial overlapping history

from reviewers without a substantial overlapping history


5.0
4.4


Read more about our Overlapping Review History test.

Fail Reviewer Participation

  • 34%
  • 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 38 reviewers (or 34%) are within an overrepresented participation group. These reviews have rated this product an average of 4.1, while all other reviews have rated this product an average of 4.8. 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.

From reviewers with an overrepresented participation

From reviewers with a properly represented participation


4.1
4.8


Read more about our Reviewer Participation test.

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


  • 67%
  • 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 2 groups with a statistically significant greater concentration than what we'd expect to see:In total, we found that 76 reviews (or 67%) 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


4.6
4.4


Read more about our Word Count Comparison test.

Pass Unverified Purchases

2 of the 113 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 Suspicious Reviewers

One-Hit Wonders


7 of the 113 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.

from one-hit wonders

from reviewers with more than one review


3.9
4.6


Never-Verified Reviewers

We didn't detect a substantial amount of Never-Verified Reviewers.

Take-Back Reviewers

We didn't detect a substantial amount of Take-Back Reviewers.

Single-Day Reviewers

We didn't detect a substantial amount of Single-Day Reviewers.

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:
  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.