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NANAMI Qi ワイヤレス急速充電器 Quick Charge 2.0/3.0 qi 充電器 スタンド...
More product info From NANAMI

2% of potentially unnatural reviews removed (why?)
Adjusted:
Jump to Report Card


Report Card

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

Most Trusted Reviews

1/5
User did not leave written text for this review. [Go to full review]
Oct 29, 2021      
73% TRUST
  • Verified Purchaser
  • Overrepresented word count (0 words)
  • Critical Reviewer (avg. rating: 3.4)


Least Trusted Reviews

4/5
User did not leave written text for this review. [Go to full review]
Sep 4, 2019      
5% TRUST
  • Verified Purchaser
  • Overrepresented word count (0 words)

Reviewer data not yet gathered.


Analysis Details

Fail Deleted Reviews

We discovered a total of 47 deleted Reviews for this product, with an average rating of 4.3. 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:
  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.

4.3 average rating of deleted reviews

4.3


Show distribution of deleted reviews

Fail Suspicious Reviewers

Take-Back Reviewers


Less than approximately 10% of reviewers have had at least one of their past reviews for another product deleted. The Take-Back Reviewers have rated this product an average of 1.0 while the reviewers who don't have any deleted reviews in their history have rated this product an average of 3.8. 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 take-back reviewers

from reviewers without previously deleted reviews


1.0
3.8


Read more about our Suspicious Reviewers test.

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


  • >90%
  • 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 over approximately 90% 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


3.7
N/A


Read more about our Word Count Comparison test.

Pass Rating Trend
  • <10%
  • Created on high-volume days
We didn't notice any signals that would indicate reviews were created unevenly over time.
Read more about our Rating Trend test.

Pass Unverified Purchases

6 of the 917 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


N/A
3.7


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
  • <10%
  • Substantial overlapping review history
Less than approximately 10% of 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.
Read more about our Overlapping Review History test.

Pass 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 3.9, while the average ease score for reviewers in this category is 4.2.

3.9 Product's Average Ease Score

4.2 Category's Average Ease Score


3.9
4.2


Read more about our Reviewer Ease test.


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 Reviewer Participation
We haven't collected sufficient data to run this test yet. more info

N/A Incentivized Reviews
We have not yet completed optimization for this test for Hanzi or Kanji.