STAR WARS: THE EMPIRE STRIKES BACK [Blu-ray]
More product info
From Mark Hamill
Refresh the report to view the most up-to-date data available:
Note: We only analyze "reviews" and ignore one-tap "ratings".
Report Card
Most Trusted Reviews
TRUST
- Verified Purchaser
- Easy Grader (avg. rating: 4.5)
Least Trusted Reviews
TRUST
- Unverified Purchaser
- Created on a high volume day
- Contains repetitive phrases (show)
- Never-Verified Reviewer
- Single-Day Reviewer (posted all reviews on Jul 5, 2003)
- Brand Monogamist (7 of 7 reviews for this brand; avg rating: 5.0)
- Easy Grader (avg. rating: 5.0)
Analysis Details
356 of the 1,203 total reviews for this product are unverified purchases. The unverified purchasers have rated this product an average of 3.8 while the verified purchasers have rated this product an average of 4.6. 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.
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.
Brand Repeaters
591 of the 1,203 reviewers have reviewed other products for this brand. While this is more Brand Repeaters than we'd expect to see, it does not appear to have a significant impact on the overall rating.
Brand Loyalists
56 of the 1,203 reviewers have reviewed multiple products but half or more of their reviews are for this brand. This is an excessively large percentage of Brand Loyalists which may indicate unnatural reviews.
Never-Verified Reviewers
146 of the 1,203 reviewers have never written a verified purchase review. The Never-Verified Reviewers have rated this product an average of 3.6 while the reviewers who have written at least one verified purchase review rated this product an average of 4.4. 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
433 of the 1,203 reviewers have had at least one of their past reviews for another product deleted. The Take-Back Reviewers have rated this product an average of 4.6 while the reviewers who don't have any deleted reviews in their history have 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.
Single-Day Reviewers
41 of the 1,203 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 3.7 while all other reviewers rated this product an average of 4.4. 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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- 49%
- 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 594 reviews (or 49%) are within an overrepresented word count group. These reviews have rated this product an average of 4.7, while all other reviews 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.
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- 24%
- Created over 68 days
We counted 1,203 reviews for this product over the span of 8,119 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 68 days exceeding this threshold:In total, we found that 292 reviews were created on just 68 days. This is an excessively high number of reviews submitted on these high volume days.
(3.9/5)
(2.7/5)
(4.3/5)
(4.6/5)
(4.1/5)
(4.3/5)
(3.8/5)
(4.6/5)
(2.9/5)
(3.5/5)
(4.2/5)
208 of the 1,203 total reviews for this product use substantial repetitive phrases between them. This is an excessively large percentage which may indicate unnatural reviews.
39% also reviewed:
STAR WARS: A NEW HOPE [Blu-ray] by Mark Hamill
34% also reviewed:
Star Wars: Return of the Jedi (Limited Edition... by Peter Mayhew
13% also reviewed:
Star Wars: Episode I - The Phantom Menace (in 3D)... by Ewan McGregor
11% also reviewed:
STAR WARS: REVENGE OF THE SITH [Blu-ray] by Ewan McGregor
10% also reviewed:
Star Wars, Episode II: Attack of the Clones (Full... by TCFHE
8% also reviewed:
Star Wars Trilogy Episodes IV-VI (Blu-ray + DVD) by 20th Century Fox Home Entertainment
5% also reviewed:
STAR WARS: THE FORCE AWAKENS [Blu-ray] by Harrison Ford
4% also reviewed:
The Lord of the Rings: The Fellowship of the Ring by Elijah Wood
4% also reviewed:
Guardians of the Galaxy (Plus Bonus Features) by Chris Pratt
643 of the 1,203 reviewers have substantial overlapping product review history. While this is more than we'd expect to see, it does not appear to have a significant impact on the overall rating.
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- 0%
- From reviewers with an overrepresented participation
Read more about our Reviewer Participation test.
4.2 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.