Browser Extensions 

Fast Wireless Charger By Ivolks Cordless Mobile Phone Charger Portable QI Charging For iPhone 8 ,8... From ANZHIER Report Feedback

Fail Unnatural reviews detected

Original:

246 Reviews

Adjusted:

32 Reviews

36%
2%

View/Edit Adjustment
How is this calculated
Report Last Updated: Jan 3, 2018
Update Available
Advertisement (Support us to Hide Ads)

Report Card

Click a test to jump to details

FAIL Rating Trend
FAIL Unverified Purchases
FAIL Suspicious Reviewers
FAIL Reviewer Ease
FAIL Overlapping Review History
FAIL Reviewer Participation
WARN Deleted Reviews
WARN Word Count Comparison
WARN Phrase Repetition
PASS Brand Repeats
PASS Skewed Helpfulness
PASS Incentivized Reviews
Advertisement (Support us to Hide Ads)

Most Trusted Reviews

I got this charger today and set it up. I ... [Go to full review]
Nov 29, 2017      
100% TRUST
  • Verified Purchaser
  • Critical Reviewer (avg. rating: 3.9)


Least Trusted Reviews

Works exactly as I'd hoped. ,work well for my phone. [Go to full review]
Dec 10, 2017      
0% TRUST
  • Unverified Purchaser
  • Created on a high volume day
  • Overrepresented word count (10 words)
  • Never-Verified Reviewer
  • Single-Day Reviewer (posted all reviews on Dec 10, 2017)
  • Overrepresented Participation (posted 3 reviews)
  • Easy Grader (avg. rating: 5.0)


Analysis Details


Fail Rating Trend

  • 17%
  • Created over 4 days

We counted 246 reviews for this product over the span of 128 days, an average of 1.9 reviews per day. If these reviews were created randomly, there would be a 99.9% chance that we would see 8 or fewer reviews on any given day.

However, we see the following 4 days exceeding this threshold:In total, we found that 42 reviews were created on just 4 days. The reviews on these high volume days have rated this product an average of 4.6 while reviews from other days have rated this product an average of 3.9. 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


4.6
3.9


Read more about our Rating Trend test.

Fail Unverified Purchases

27 of the 246 total reviews for this product are unverified purchases. The unverified purchasers have rated this product an average of 4.7 while the verified purchasers have rated this product an average of 4.0. 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 unverified purchasers

from verified purchases


4.7
4.0


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.

Fail Suspicious Reviewers

One-Hit Wonders


90 of the 246 reviewers have only reviewed this product. This is an excessively large percentage of One-Hit Wonders which may indicate unnatural reviews.

from one-hit wonders

from reviewers with more than one review


4.2
3.9


Never-Verified Reviewers


23 of the 246 reviewers have never written a verified purchase review. The Never-Verified Reviewers have rated this product an average of 4.8 while the reviewers who have written at least one verified purchase review rated this product an average of 4.0. 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 never-verified reviewers

from reviewers with at least one verified purchase review


4.8
4.0


Take-Back Reviewers


3 of the 246 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


2.3
4.1


Single-Day Reviewers


84 of the 246 reviewers have written multiple reviews but posted all of them on a single day. The Single-Day reviewers have rated this product an average of 4.4 while all other reviewers 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 single-day reviewers

from non-single-day reviewers


4.4
3.8


Read more about our Suspicious Reviewers 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 4.3, 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.

4.3 Product's Average Ease Score

4.2 Category's Average Ease Score


4.3
4.2


Read more about our Reviewer Ease test.


Fail Overlapping Review History


17 of the 246 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 4.0. 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
4.0


Read more about our Overlapping Review History test.

Fail Reviewer Participation

  • 84%
  • 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 206 reviewers (or 84%) are within an overrepresented participation group. These reviews have rated this product an average of 4.2, while all other reviews have rated this product an average of 3.1. 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


4.2
3.1


Read more about our Reviewer Participation test.

Warn Deleted Reviews

We discovered a total of 7 deleted reviews 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.

5.0 average rating of deleted reviews

5.0



Read more about our Deleted Reviews test.

Warn Word Count Comparison

  • 39%
  • 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 95 reviews (or 39%) are within an overrepresented word count group. While this is more reviews from overrepresented word count groups than we'd expect to see, the discrepancy in ratings between reviews with overrepresented word groups and all other reviews isn’t significant enough to rule out the possibility of it being due to random chance.

from reviews with an overrepresented word count

from reviews with a properly represented word count


4.2
3.9


Read more about our Word Count Comparison test.

Warn Phrase Repetition
Reviews that contain one of these phrases are NOT necessarily devalued; read more about how this test works here.

Common Phrases in Reviews:
6 reviews
(2.4%)
10 reviews
(4.1%)
3 reviews
(1.2%)
2 reviews
(0.8%)
4 reviews
(1.6%)
6 reviews
(2.4%)
Show MoreShow Less
Common Phrases in Titles:
2 reviews
(0.8%)
9 reviews
(3.7%)
2 reviews
(0.8%)
3 reviews
(1.2%)
Show MoreShow Less


37 of the 246 total reviews for this product use substantial repetitive phrases between them. While this is more than we'd expect to see, the discrepancy in ratings between the these reviews and reviews without substantial repetitive phrases isn't significant enough to rule out the possibility of it being due to random chance.

from reviews with substantial repetitive phrases

from reviews without substantial repetitive phrases


4.4
4.0


Read more about our Phrase Repetition test.

Pass Brand Repeats

Brand Repeaters

We didn't detect a substantial amount of Brand Repeaters.

Pass Skewed Helpfulness
We examined the average net helpfulness score of negative reviews against the average net helpfulness score of positive reviews. The net helpfulness score is the number of times a review has been marked as helpful minus the number of times a review has been marked as unhelpful. We could not find any statistically significant difference in average net helpfulness score between the negative reviews and positive reviews.

0.0 average net helpfulness for positive reviews

0.0 average net helpfulness for negative reviews


Read more about our Skewed Helpfulness test.


Pass Incentivized Reviews
On Oct 3, 2016, Amazon prohibited incentivized reviews, however we still test for them since there are still millions in our dataset.

  • 0%
  • Admitted to receiving an incentive
We didn't detect any reviews that used language indicating they were incentivized.
Read more about our Incentivized Reviews test, or check out our study showing that Incentivized Reviewers are much more likely to leave a positive review.