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Angels & Demons
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From Dan Brown
This report was last updated 11/1/2018.
Refresh the report to view the most up-to-date data available:
Refresh the report to view the most up-to-date data available:
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Report Info:
Note: We only analyze "reviews" and ignore one-tap "ratings".
Top products in Custom Stores with authentic reviews:
Report Card
Fail Overall Grade
FAIL 
Unverified Purchases
Unverified PurchasesFAIL Suspicious Reviewers
Suspicious ReviewersFAIL Phrase Repetition
Phrase RepetitionWARN Deleted Reviews
Deleted ReviewsWARN Rating Trend
Rating TrendWARN Brand Repeats
Brand RepeatsWARN Word Count Comparison
Word Count ComparisonWARN Reviewer Participation
Reviewer ParticipationPASS Overlapping Review History
Overlapping Review HistoryPASS Reviewer Ease
Reviewer EasePASS Incentivized Reviews
Incentivized Reviews
Most Trusted Reviews
We couldn't find any quality reviews
Least Trusted Reviews
As a voracious reader, I have read the best. "Angels ... [Go to full review]
May 21, 2000
0%
TRUST
TRUST
-
Unverified Purchaser -
Created on a high volume day -
Overrepresented word count (129 words) -
Contains repetitive phrases (
show)
-
Never-Verified Reviewer -
Single-Day Reviewer (posted all reviews on May 21, 2000) -
Brand Monogamist (2 of 2 reviews for this brand; avg rating: 5.0) -
Overrepresented Participation (posted 2 Reviews) -
Easy Grader (avg. rating: 5.0)
Critical Reviewer (avg. rating: 3.5)
Analysis Details
Fail Unverified Purchases
Unverified Purchases
815 of the 846 total reviews for this product are unverified purchases. The unverified purchasers have rated this product an average of 4.0 while the verified purchasers have rated this product an average of 4.7. 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.
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
Suspicious Reviewers
One-Hit Wonders
182 of the 846 reviewers have only reviewed this product. While this is more One-Hit Wonders than we'd expect to see, it does not appear to have a significant impact on the overall rating.
Never-Verified Reviewers
754 of the 846 reviewers have never written a verified purchase review. This is an excessively large percentage of Never-Verified Reviewers which may indicate unnatural reviews.
Take-Back Reviewers
3 of the 846 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, the discrepancy in ratings between the Take-Back Reviewers and reviewers who don't have any deleted reviews in their history isn't significant enough to rule out the possibility of it being due to random chance.
Fail Phrase Repetition
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:
Show MoreShow Less
286 reviews
(4.0/5)
(4.0/5)
195 reviews
(4.2/5)
(4.2/5)
99 reviews
(4.3/5)
(4.3/5)
8 reviews
(5.0/5)
(5.0/5)
102 reviews
(3.9/5)
(3.9/5)
405 of the 846 total reviews for this product use substantial repetitive phrases between them. These reviewers have rated this product an average of 4.2 while reviews without substantial repetitive phrases 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.
Warn Deleted Reviews
Deleted Reviews
We discovered a total of 1 deleted Review 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.
There are a few limitations to keep in mind regarding the Deleted Reviews test:
- 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.
- We have no information on reviews that were never published in the first place.
- 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.
5.0 average rating of deleted reviews
Warn Rating Trend
Rating Trend
-
- 39%
- Created over 87 days
We counted 846 reviews for this product over the span of 6,757 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 87 days exceeding this threshold:In total, we found that 333 reviews were created on just 87 days. This is an excessively high number of reviews submitted on these high volume days.
Warn Brand Repeats
Brand Repeats
Brand Loyalists
25 of the 846 reviewers have reviewed multiple products but half or more of their reviews are for this brand. While this is more Brand Loyalists than we'd expect to see, the discrepancy in ratings between the Brand Loyalists and non-loyalists isn't significant enough to rule out the possibility of it being due to random chance.
Warn Word Count Comparison
Word Count Comparison
-
- 50%
- 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 419 reviews (or 50%) are within an overrepresented word count group. While this is more reviews from overrepresented word count groups than we'd expect to see, these reviews do not appear to have a significant impact on the overall rating.
Warn Reviewer Participation
Reviewer Participation
-
- 48%
- 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 407 reviewers (or 51%) are within an overrepresented participation group. This is an excessively high number of reviewers in overrepresented participation groups.
Pass Overlapping Review History
Overlapping Review History
Reviewers of this product have ALSO reviewed the following products:
3% also reviewed:
Harry Potter and the Philosopher's Stone by J.K. Rowling
3% also reviewed:
The Gunslinger by Stephen King
2% also reviewed:
The Hobbit/The Lord Of The Rings ( Collector's... by Jrr Tolkien
2% also reviewed:
Nineteen Eighty Four by George Orwell
2% also reviewed:
The Kite Runner by Khaled Hosseini
1% also reviewed:
The Red Tent by Anita Diamant
1% also reviewed:
The Alchemist by Paulo Coelho
1% also reviewed:
Treason: Liberal Treachery from the Cold War to... by Ann Coulter
Does not include products
from the same brand
from the same brand
74 of the 846 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.
Pass Reviewer Ease
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, while the average ease score for reviewers in this category is 4.3.
4.0 Product's Average Ease Score
4.3 Category's Average Ease Score
Read more about our Reviewer Ease test.
Pass Incentivized Reviews
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.
Read more about our Incentivized Reviews test. Check out our study showing that Incentivized Reviewers are much more likely to leave a positive review.