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Hey RM community - in the spirit of full transparency, I've decided to make a public announcement...
It's been a wild adventure since launching the site 2016, however I've decided it's time for me to move on. I'm now searching for a successor to ReviewMeta. The main concern is making sure the site will stay true to its roots - helping provide transparency to an industry that's increasingly darkening.
If you know anyone who would be interested in taking over this project, let me know here. You can also read more about why I've decided to move on and what's next for me.
Notice: There are more than 10,000 reviews for this product. Unfortunately Amazon won't actually show us (or anyone) more than 10,000 reviews. We'll do our best, but this report might not be quite right since Amazon has blocked access to some of the data.
The Martian [Blu-ray]
More product info
From Matt Damon
![The Martian [Blu-ray]](https://m.media-amazon.com/images/I/51pSxH8tGRL._AC_US180_SCLZZZZZZZ__.jpg)
This report was last updated 6/1/2020.
Refresh the report to view the most up-to-date data available:
Refresh the report to view the most up-to-date data available:
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Report Info:
Note: While Amazon.com claims 15,329 Ratings, we counted 15,738 Reviews available on their site.
Note: While we've examined all 15,738 reviews, our reviewer analysis is based on a sample of 15,737 reviewers.
Note: We only analyze "reviews" and ignore one-tap "ratings".
Note: While we've examined all 15,738 reviews, our reviewer analysis is based on a sample of 15,737 reviewers.
Note: We only analyze "reviews" and ignore one-tap "ratings".
Top products in Movies with authentic reviews:
Report Card
Warn Overall Grade
FAIL 
Word Count Comparison
Word Count ComparisonWARN Deleted Reviews
Deleted ReviewsWARN Rating Trend
Rating TrendWARN Suspicious Reviewers
Suspicious ReviewersWARN Reviewer Participation
Reviewer ParticipationPASS Unverified Purchases
Unverified PurchasesPASS Phrase Repetition
Phrase RepetitionPASS Overlapping Review History
Overlapping Review HistoryPASS Reviewer Ease
Reviewer EasePASS Brand Repeats
Brand RepeatsPASS Incentivized Reviews
Incentivized Reviews
Most Trusted Reviews
Excellent [Go to full review]
Jan 23, 2016
55%
TRUST
TRUST
-
Verified Purchaser -
Created on a high volume day -
Overrepresented word count (1 word)
-
Overlapping Review History: reviewed 1 of 9 top products -
Overrepresented Participation (posted 27 Reviews) -
Easy Grader (avg. rating: 4.6)
Least Trusted Reviews
good flick [Go to full review]
Feb 16, 2016
32%
TRUST
TRUST
-
Verified Purchaser
-
Created on a high volume day
-
Overrepresented word count (2 words)
-
Take-Back Reviewer (6 deleted Reviews; avg. rating: 5.0) -
Overlapping Review History: reviewed 1 of 9 top products
-
Critical Reviewer (avg. rating: 4.2)
Analysis Details
Fail Word Count Comparison
Word Count Comparison
-
- 69%
- 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 10,902 reviews (or 69%) 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 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.
Warn Deleted Reviews
Deleted Reviews
We discovered a total of 66 deleted Reviews for this product, with an average rating of 4.4. Even though deleted reviews don't affect the average rating, the fact that action was taken to delete reviews raises some red flags about the integrity of the reviews for the product as whole.
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.
4.4 average rating of deleted reviews
Warn Rating Trend
Rating Trend
-
- 72%
- Created over 98 days
We counted 15,738 reviews for this product over the span of 1,653 days, an average of 9.5 reviews per day. If these reviews were created randomly, there would be a 99.9% chance that we would see 21 or fewer reviews on any given day.
However, we see the following 98 days exceeding this threshold:In total, we found that 11,410 reviews were created on just 98 days. This is an excessively high number of reviews submitted on these high volume days.
Warn Suspicious Reviewers
Suspicious Reviewers
Take-Back Reviewers
6,286 of a random sample of 15,737 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.
Warn Reviewer Participation
Reviewer Participation
-
- 67%
- From reviewers with an overrepresented participation
We see the following 3 participation groups with a statistically significant greater concentration than what we'd expect to see:In total, we found that 10519 reviewers (or 67%) are within an overrepresented participation group. This is an excessively high number of reviewers in overrepresented participation groups.
Pass Unverified Purchases
Unverified Purchases
657 of the 15,738 total reviews for this product are unverified purchases. This is within an acceptable range and it does not appear to be significantly affecting the overall rating for this product.
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.
Pass Phrase Repetition
Phrase Repetition
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- 0%
- Used substantial repetitive phrases
0 of the 15,738 total reviews for this product use substantial repetitive phrases between them. This is within an acceptable range and it does not appear to be significantly affecting the overall rating for this product.
Read more about our Phrase Repetition test.
Read more about our Phrase Repetition test.
Pass Overlapping Review History
Overlapping Review History
Reviewers of this product have ALSO reviewed the following products:
3% also reviewed:
Star Wars: The Force Awakens (Plus Bonus Features) by Harrison Ford
3% also reviewed:
Spectre by Dave Bautista
3% also reviewed:
Jurassic World by Chris Pratt
3% also reviewed:
The Intern by Warner Manufacturing
3% also reviewed:
The Man In The High Castle - Season 1 (4K UHD) by Alexa Davalos
3% also reviewed:
Bridge of Spies (Plus Bonus Features) by Matt Charman
3% also reviewed:
Ex Machina by Domhnall Gleeson
3% also reviewed:
Certified Refurbished Fire TV Stick with Alexa... by Amazon Renewed
2% also reviewed:
Mad Max: Fury Road (Special Edition DVD) by Tom Hardy
3,030 of a random sample of 15,737 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.
Pass Reviewer Ease
Reviewer Ease
The ease score is the average rating for all reviews that a given reviewer submits. The average ease score for reviewers of this product is 4.3, while the average ease score for reviewers in this category is 4.3.
4.3 Product's Average Ease Score
4.3 Category's Average Ease Score
Read more about our Reviewer Ease test.
Pass Brand Repeats
Brand Repeats
Brand Repeaters
2,063 of a random sample of 15,737 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.
Pass Incentivized Reviews
Incentivized Reviews
On Oct 3, 2016, Amazon prohibited incentivized reviews, however we still test for them since there are still millions in our dataset.
1 of the 15,738 total reviews for this product admitted to receiving a free or discounted product in exchange for a review. This is within an acceptable range and it does not appear to be significantly affecting the overall rating for this product.
Read more about our Incentivized Reviews test. Check out our study showing that Incentivized Reviewers are much more likely to leave a positive review.