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Opera, Art and Donuts
More product info From Andy Wilman

Review Hijacking Alert!
138 reviews are coming from a seemingly different product variation:

The Holy Trinity (Example Review )



Learn more about Review Hijacking.
Amazon Reviews for  Opera, Art and Donuts
Rating:
7,345 Ratings
7,345 Reviews
("Ratings" vs. "Reviews")
95% of potentially unnatural reviews removed (why?)
Adjusted:
View/Edit Adjustment
Jump to Report Card

Report Card

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

Most Trusted Reviews

1/5
Oct 8, 2017      
100% TRUST
  • Verified Purchaser
  • Critical Reviewer (avg. rating: 3.7)


Least Trusted Reviews

Fantastic come back! [Go to full review]
Dec 1, 2016      
0% TRUST
  • Unverified Purchaser
  • Created on a high volume day

Reviewer data not yet gathered.


Analysis Details

Fail Rating Trend

  • 88%
  • Created over 44 days

We counted 7,345 reviews for this product over the span of 758 days, an average of 9.7 reviews per day. If these reviews were created randomly, there would be a 99.9% chance that we would see 22 or fewer reviews on any given day.

However, we see the following 44 days exceeding this threshold:In total, we found that 6,431 reviews were created on just 44 days. The reviews on these high volume days have rated this product an average of 4.5 while reviews from other days 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 reviews created on high volume days

from reviews created on normal volume days


4.5
3.8


Read more about our Rating Trend test.

Fail Suspicious Reviewers

One-Hit Wonders


1,533 of the 7,345 reviewers have only reviewed this product. The One-Hit Wonders have rated this product an average of 4.6 while the reviewers who have posted more than one review 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 one-hit wonders

from reviewers with more than one review


4.6
4.4


Never-Verified Reviewers


1,283 of the 7,345 reviewers have never written a verified purchase review. The Never-Verified Reviewers have rated this product an average of 4.6 while the reviewers who have written at least one verified purchase review 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 never-verified reviewers

from reviewers with at least one verified purchase review


4.6
4.4


Take-Back Reviewers


197 of the 7,345 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


4.2
4.4


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 4.4, while the average ease score for reviewers in this category is 4.3. 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.

4.4 Product's Average Ease Score

4.3 Category's Average Ease Score


4.4
4.3


Read more about our Reviewer Ease test.


Fail 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:
147 reviews
(3.8/5)
176 reviews
(3.9/5)
103 reviews
(4.9/5)
184 reviews
(5.0/5)
96 reviews
(4.9/5)
96 reviews
(5.0/5)
125 reviews
(5.0/5)
123 reviews
(3.9/5)
125 reviews
(4.8/5)
189 reviews
(5.0/5)
Show MoreShow Less
Common Phrases in Titles:
114 reviews
(5.0/5)
351 reviews
(4.3/5)
124 reviews
(4.9/5)


626 of the 7,345 total reviews for this product use substantial repetitive phrases between them. These reviewers have rated this product an average of 4.8 while reviews without substantial repetitive phrases 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 with substantial repetitive phrases

from reviews without substantial repetitive phrases


4.8
4.4


Read more about our Phrase Repetition test.

Fail Reviewer Participation

  • 85%
  • From reviewers with an overrepresented participation

We see the following 2 participation groups with a statistically significant greater concentration than what we'd expect to see:In total, we found that 6271 reviewers (or 85%) are within an overrepresented participation group. These reviews have rated this product an average of 4.4, while all other reviews have rated this product an average of 4.3. 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 reviewers with an overrepresented participation

From reviewers with a properly represented participation


4.4
4.3


Read more about our Reviewer Participation test.

Warn Deleted Reviews

We discovered a total of 143 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 our Deleted Reviews test.

4.6 average rating of deleted reviews

4.6


Show distribution of deleted reviews

Pass Unverified Purchases

2,243 of the 7,345 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


4.5
4.4


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 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:

2% also reviewed:
Amazon Prime Video by Amazon.com



395 of the 7,345 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


4.4
4.4


Read more about our Overlapping Review History test.

Pass Brand Repeats

Brand Repeaters


15 of the 7,345 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


4.9
4.4


Read more about our Brand Repeats 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. Check out our study showing that Incentivized Reviewers are much more likely to leave a positive review.