Pirates of the Caribbean - At World's End
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Most Trusted Reviews
TRUST
- Verified Purchaser
- Take-Back Reviewer (1 deleted Review; avg. rating: 4.0)
- Overlapping Review History: reviewed 2 of 9 top products
- Critical Reviewer (avg. rating: 3.9)
Least Trusted Reviews
TRUST
- Unverified Purchaser
- Created on a high volume day
- Never-Verified Reviewer
- Single-Day Reviewer (posted all reviews on Aug 25, 2007)
- Overlapping Review History: reviewed 1 of 9 top products
- Overrepresented Participation (posted 4 Reviews)
- Critical Reviewer (avg. rating: 4.0)
Analysis Details
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- 11%
- Created over 15 days
We counted 445 reviews for this product over the span of 3,620 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 15 days exceeding this threshold:In total, we found that 49 reviews were created on just 15 days. The reviews on these high volume days have rated this product an average of 3.0 while reviews from other days have rated this product an average of 3.7. 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.
245 of the 445 total reviews for this product are unverified purchases. The unverified purchasers have rated this product an average of 3.0 while the verified purchasers 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.
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
142 of the 445 reviewers have never written a verified purchase review. The Never-Verified Reviewers have rated this product an average of 3.1 while the reviewers who have written at least one verified purchase review 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.
Take-Back Reviewers
11 of the 445 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.
Single-Day Reviewers
23 of the 445 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 4.6 while all other reviewers rated this product an average of 3.6. 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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- 16%
- 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 71 reviews (or 16%) are within an overrepresented word count group. These reviews have rated this product an average of 3.0, while all other reviews 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.
58 of the 445 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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- 71%
- 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 317 reviewers (or 71%) are within an overrepresented participation group. This is an excessively high number of reviewers in overrepresented participation groups.
15% also reviewed:
Pirates of the Caribbean: Dead Man's Chest (with... by Disney
13% also reviewed:
Pirates Of The Caribbean - The Curse of the Black... by Walt Disney Home Video
9% also reviewed:
Spider-Man 3 (2 Disc Special Edition) Limited... by Spider-Man
9% also reviewed:
Casino Royale [DVD] [2006] by 20th Century Fox Home Entertainment
7% also reviewed:
Transformers (2007) [DVD] by Dreamworks Home Entertainment
6% also reviewed:
The Dark Knight (2-Disc Special Edition)... by Warner Bros. Home Video
5% also reviewed:
The Amazing Spider-Man [Blu-ray 4K] [2012]... by Sony Pictures Home Entertainment
5% also reviewed:
Harry Potter and the Order of the Phoenix (2 Disc... by Warner Home Video
from the same brand
144 of the 445 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.
4.1 Product's Average Ease Score
4.3 Category's Average Ease Score
Read more about our Reviewer Ease test.
Brand Repeaters
15 of the 445 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.