Indiana Jones and the Kingdom of the Crystal Skull
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From David Koepp
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Most Trusted Reviews
TRUST
- Verified Purchaser
- Take-Back Reviewer (1275 deleted Reviews; avg. rating: 4.7)
- Overlapping Review History: reviewed 5 of 9 top products
- Easy Grader (avg. rating: 4.6)
Least Trusted Reviews
TRUST
- Unverified Purchaser
- Created on a high volume day
- Never-Verified Reviewer
- Single-Day Reviewer (posted all reviews on Nov 25, 2008)
- Overrepresented Participation (posted 3 Reviews)
- Critical Reviewer (avg. rating: 4.0)
Analysis Details
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- 36%
- Created over 68 days
We counted 1,795 reviews for this product over the span of 3,753 days, an average of 0.5 reviews per day. If these reviews were created randomly, there would be a 99.9% chance that we would see 4 or fewer reviews on any given day.
However, we see the following 68 days exceeding this threshold:In total, we found that 654 reviews were created on just 68 days. The reviews on these high volume days have rated this product an average of 3.7 while reviews from other days have rated this product an average of 3.5. 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.
760 of the 1,795 total reviews for this product are unverified purchases. The unverified purchasers have rated this product an average of 2.9 while the verified purchasers have 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.
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.
Take-Back Reviewers
275 of the 1,795 reviewers have had at least one of their past reviews for another product deleted. This is an excessively large percentage of Take-Back Reviewers which may indicate unnatural reviews.
Single-Day Reviewers
40 of the 1,795 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 4.2 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.
Brand Repeaters
679 of the 1,795 reviewers have reviewed other products for this brand. While this is more Brand Repeaters than we'd expect to see, the discrepancy in ratings between the Brand Repeaters and non-repeaters isn't significant enough to rule out the possibility of it being due to random chance.
340 of the 1,795 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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- 46%
- 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 825 reviewers (or 46%) are within an overrepresented participation group. While this is more reviews from overrepresented participation groups than we'd expect to see, these reviews do not appear to have a significant impact on the overall rating.
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- 0%
- Have an overrepresented word count
Read more about our Word Count Comparison test.
9% also reviewed:
Iron Man (Ultimate 2 Disc Edition) by DOWNEY,ROBERT JR.
7% also reviewed:
Indiana Jones and the Raiders of the Lost Ark... by Harrison Ford
7% also reviewed:
Fantastic Four: Rise of the Silver Surfer... by Ioan Gruffudd
6% also reviewed:
Indiana Jones and the Temple of Doom [Blu-ray] by Harrison Ford
6% also reviewed:
Star Trek Exclusive Steelbook (Blue-ray) by Chris Pine
6% also reviewed:
The Incredible Hulk (SteelBook) (Blu-ray + DVD +... by UNIVERSAL
6% also reviewed:
Harry Potter Complete Book Series Special Edition... by Unbranded
6% also reviewed:
Casino Royale [Blu-ray] by Sony
from the same brand
471 of the 1,795 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.
4.0 Product's Average Ease Score
4.3 Category's Average Ease Score
Read more about our Reviewer Ease test.
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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.