Batman - The Dark Knight, le Chevalier Noir - 4K Ultra HD - DC COMICS [4K Ultra HD + Blu-ray]
More product info
From Warner Bros.
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Report Card
Most Trusted Reviews
TRUST
- Verified Purchaser
- Brand Repeater (3 of 30 reviews for this brand; avg rating: 3.7)
- Overlapping Review History: reviewed 1 of 9 top products
- Easy Grader (avg. rating: 4.6)
Least Trusted Reviews
TRUST
- Unverified Purchaser
- Contains repetitive phrases (show)
- Brand Repeater (2 of 5 reviews for this brand; avg rating: 3.5)
- Critical Reviewer (avg. rating: 4.0)
Analysis Details
111 of the 454 total reviews for this product are unverified purchases. The unverified purchasers have rated this product an average of 3.4 while the verified purchasers 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.
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.
Never-Verified Reviewers
53 of the 454 reviewers have never written a verified purchase review. The Never-Verified Reviewers have rated this product an average of 3.4 while the reviewers who have written at least one verified purchase review rated this product an average of 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.
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- 24%
- 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 110 reviews (or 24%) are within an overrepresented word count group. These reviews have rated this product an average of 4.6, while all other reviews 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.
(4.3/5)
(3.5/5)
(4.3/5)
(4.7/5)
(4.6/5)
(4.3/5)
(4.8/5)
(4.3/5)
(4.5/5)
(5.0/5)
133 of the 454 total reviews for this product use substantial repetitive phrases between them. These reviewers have rated this product an average of 4.4 while reviews without substantial repetitive phrases 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.
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- 19%
- Created over 19 days
We counted 454 reviews for this product over the span of 2,821 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 19 days exceeding this threshold:In total, we found that 88 reviews were created on just 19 days. This is an excessively high number of reviews submitted on these high volume days.
11% also reviewed:
Avengers [Blu-ray] by Robert Downey Jr.
5% also reviewed:
World War Z [Combo Blu-Ray + DVD-Version Longue... by Brad Pitt
4% also reviewed:
Star Trek , le film 2009 - Edition simple by Chris Pine
4% also reviewed:
Star Wars - L'intégrale de la saga -... by Harrison Ford
3% also reviewed:
Twilight - Chapitre 5 : Révélation,... by M6 Vidéo
3% also reviewed:
Valérian et la cité des mille planètes -... by EuropaCorp
2% also reviewed:
Harry Potter - l'Intégrale des 8 Films - Le... by Daniel Radcliffe
2% also reviewed:
Gladiator [4K Ultra HD + Blu-Ray-Édition... by AmazonBasics&ref_=nav_cs_amazonbasics
from the same brand
108 of the 454 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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- 17%
- 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 77 reviewers (or 17%) 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.
4.2 Product's Average Ease Score
4.0 Category's Average Ease Score
Read more about our Reviewer Ease test.
Brand Repeaters
2 of the 454 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.