Harry Potter und die Heiligtümer des Todes
More product info
From J.K. Rowling
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Report Card
Most Trusted Reviews
TRUST
- Verified Purchaser
- Overrepresented Participation (posted 11 Reviews)
- Critical Reviewer (avg. rating: 0.5)
Least Trusted Reviews
TRUST
- Unverified Purchaser
- Contains repetitive phrases (show)
- Overlapping Review History: reviewed 1 of 9 top products
- Overrepresented Participation (posted 24 Reviews)
- Easy Grader (avg. rating: 5.0)
Analysis Details
Never-Verified Reviewers
310 of the 887 reviewers have never written a verified purchase review. While this is more Never-Verified Reviewers than we'd expect to see, it does not appear to have a significant impact on the overall rating.
Single-Day Reviewers
25 of the 887 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 5.0 while all other reviewers 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.
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- 26%
- Created over 27 days
We counted 887 reviews for this product over the span of 4,669 days, an average of 0.2 reviews per day. If these reviews were created randomly, there would be a 99.9% chance that we would see 3 or fewer reviews on any given day.
However, we see the following 27 days exceeding this threshold:In total, we found that 227 reviews were created on just 27 days. This is an excessively high number of reviews submitted on these high volume days.
554 of the 887 total reviews for this product are unverified purchases. While this is a higher percentage of unverified purchases than we'd expect to see, it does not appear to have a significant impact on the overall rating.
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.
4.4 Product's Average Ease Score
3.9 Category's Average Ease Score
Read more about our Reviewer Ease test.
(4.2/5)
(4.2/5)
(4.7/5)
(4.8/5)
(4.7/5)
(4.0/5)
(5.0/5)
(4.4/5)
(4.7/5)
(4.2/5)
(4.8/5)
(4.7/5)
(4.9/5)
315 of the 887 total reviews for this product use substantial repetitive phrases between them. This is an excessively large percentage which may indicate unnatural reviews.
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- 0%
- Have an overrepresented word count
Read more about our Word Count Comparison test.
9% also reviewed:
Harry Potter und der Feuerkelch (Harry Potter 4) by Rowling, J.K.
9% also reviewed:
Harry Potter und der Stein der Weisen (Harry... by Carlsen Verlag
5% also reviewed:
Biss zum Morgengrauen (Bella und Edward 1) by Stephenie Meyer
4% also reviewed:
Tintenherz by Cornelia Funke
3% also reviewed:
Sakrileg - The Da Vinci Code: Inkl. Leseprobe aus... by Dan Brown
3% also reviewed:
Illuminati: Robert Langdon 1 by Dan Brown
3% also reviewed:
Der Schwarm: Roman by Frank Schätzing
2% also reviewed:
Die Tribute von Panem 1: Tödliche Spiele by Suzanne Collins
2% also reviewed:
Ich bin dann mal weg: Meine Reise auf dem... by Hape Kerkeling
196 of the 887 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.
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- 30%
- 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 264 reviewers (or 30%) are within an overrepresented participation group. This is within an acceptable range and it does not appear to be significantly affecting the overall rating for this product.
Brand Repeaters
50 of the 887 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.
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- 0%
- Admitted to receiving an incentive
Read more about our Incentivized Reviews test. Check out our study showing that Incentivized Reviewers are much more likely to leave a positive review.
- 0
- Reviews have been deleted
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.