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Unbreakable Stemless Wine Glasses by Evino - Gift Set of 4 Clear Shatterproof Plastic Glasses for...
More product info From Evino Report Feedback


Rating:
32 Reviews
63% of potentially unnatural reviews removed (Why?)
Adjusted:
View/Edit Adjustment
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Report Card

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

Most Trusted Reviews

An excellent quad-set and easily taken care of after use. ... [Go to full review]
May 10, 2016      
100% TRUST
  • Verified Purchaser
  • Take-Back Reviewer (1 deleted review; avg. rating: 5.0)
  • Easy Grader (avg. rating: 4.7)


Least Trusted Reviews

I received these wine glasses for free to review. They ... [Go to full review]
Jun 17, 2016      
0% TRUST
  • Unverified Purchaser
  • Created on a high volume day
  • Admitted to receiving an incentive
  • Contains repetitive phrases (show)
  • Take-Back Reviewer (72 deleted reviews; avg. rating: 4.3)
  • Critical Reviewer (avg. rating: 4.3)


Analysis Details

Fail Deleted Reviews

We discovered a total of 84 deleted reviews for this product, with an average rating of 4.6. 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 the Deleted Reviews test here.

4.6 average rating of deleted reviews

4.6


Show distribution of deleted reviews

Fail Unverified Purchases

15 of the 32 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 3.5. 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
3.5


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.

Fail Suspicious Reviewers

Take-Back Reviewers


18 of the 32 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 4.7 while the reviewers who don't have any deleted reviews in their history have rated this product an average of 3.3. 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


4.7
3.3


Read more about our Suspicious Reviewers test.

Fail Reviewer Participation

  • 19%
  • 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 6 reviewers (or 19%) are within an overrepresented participation group. These reviews have rated this product an average of 2.3, while all other reviews have rated this product an average of 4.5. 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


2.3
4.5


Read more about our Reviewer Participation test.

Warn Rating Trend

  • 31%
  • Created over 3 days

We counted 32 reviews for this product over the span of 434 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 3 days exceeding this threshold:In total, we found that 10 reviews were created on just 3 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


4.3
4.0


Read more about our Rating Trend test.

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


10 of the 32 total reviews for this product admitted to receiving a free or discounted product in exchange for a review. This is an excessively large percentage of incentivized reviews which may indicate unnatural reviews.

from incentivized reviews

from non-incentivized reviews


4.6
3.8


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.

Warn Phrase Repetition


11 of the 32 total reviews for this product use substantial repetitive phrases between them. This is an excessively large percentage which may indicate unnatural reviews.

from reviews with substantial repetitive phrases

from reviews without substantial repetitive phrases


4.2
4.0


Read more about our Phrase Repetition test.

Pass Word Count Comparison

  • 0%
  • Have an overrepresented word count
We didn't find any review word count groups that had a statistically significant greater concentration than what we'd expect to see in this category.
Read more about our Word Count Comparison test.

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

Does not include products
from the same brand


10 of the 32 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


4.7
3.8


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 4.2, while the average ease score for reviewers in this category is 4.4.

4.2 Product's Average Ease Score

4.4 Category's Average Ease Score


4.2
4.4


Read more about our Reviewer Ease test.


Pass Brand Repeats

Brand Repeaters

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


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