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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]
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From TCFHE
![The Martian [Blu-ray]](https://reviewmeta.com/secure_img/?url=http%3A%2F%2Fecx.images-amazon.com%2Fimages%2FI%2F51pSxH8tGRL.jpg)
This report was last updated 2/19/2017.
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Report Info:
Last Updated: Feb 19, 2017
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Note: While Amazon.com claims 14,689 reviews, we counted 14,152 available on their site.
Note: While we've examined all 14,152 reviews, our reviewer analysis is based on a sample of 14,073 reviewers.
Note: We only analyze "reviews" and ignore one-tap "ratings".
Note: While we've examined all 14,152 reviews, our reviewer analysis is based on a sample of 14,073 reviewers.
Note: We only analyze "reviews" and ignore one-tap "ratings".
Top products in Movies with authentic reviews:
Report Card
Warn Overall Grade
FAIL 
Suspicious Reviewers
Suspicious ReviewersFAIL Reviewer Ease
Reviewer EaseFAIL Word Count Comparison
Word Count ComparisonWARN Deleted Reviews
Deleted ReviewsWARN Rating Trend
Rating TrendWARN Reviewer Participation
Reviewer ParticipationPASS Unverified Purchases
Unverified PurchasesPASS Phrase Repetition
Phrase RepetitionPASS Overlapping Review History
Overlapping Review HistoryPASS Brand Repeats
Brand RepeatsPASS Incentivized Reviews
Incentivized Reviews
Most Trusted Reviews
Exciting, unexpected, and excellent. [Go to full review]
Mar 16, 2016 0 of 1 found this helpful.
50%
TRUST
TRUST
-
Verified Purchaser -
Overrepresented word count (4 words)
-
Take-Back Reviewer (1 deleted review; avg. rating: 4.0) -
Critical Reviewer (avg. rating: 4.1)
Least Trusted Reviews
Really good [Go to full review]
Mar 7, 2016
0%
TRUST
TRUST
-
Verified Purchaser
-
Created on a high volume day -
Overrepresented word count (2 words)
-
Overrepresented Participation (posted 5 reviews) -
Easy Grader (avg. rating: 4.4)
Analysis Details
Fail Suspicious Reviewers
Suspicious Reviewers
One-Hit Wonders
1,410 of a random sample of 14,073 reviewers have only reviewed this product. While this is more One-Hit Wonders than we'd expect to see, it does not appear to have a significant impact on the overall rating.
Take-Back Reviewers
2,843 of a random sample of 14,073 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.
Fail 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. 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 Product's Average Ease Score
4.3 Category's Average Ease Score
Read more about our Reviewer Ease test.
Fail Word Count Comparison
Word Count Comparison
-
- 70%
- 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 9,862 reviews (or 70%) 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 31 deleted reviews for this product, with an average rating of 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.
4.0 average rating of deleted reviews
Warn Rating Trend
Rating Trend
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- 69%
- Created over 48 days
We counted 14,152 reviews for this product over the span of 456 days, an average of 31.0 reviews per day. If these reviews were created randomly, there would be a 99.9% chance that we would see 51 or fewer reviews on any given day.
However, we see the following 48 days exceeding this threshold:In total, we found that 9,704 reviews were created on just 48 days. This is an excessively high number of reviews submitted on these high volume days.
Warn Reviewer Participation
Reviewer Participation
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- 85%
- 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 11915 of our sample of 14073 reviewers (or 85%) are within an overrepresented participation group. This is an excessively high number of reviewers in overrepresented participation groups.
Pass Unverified Purchases
Unverified Purchases
530 of the 14,152 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 14,152 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:
Ex Machina by Alex Garland
3% also reviewed:
The Man In The High Castle - Season 1 (4K UHD) by Alexa Davalos
2% also reviewed:
Spectre by Dave Bautista
2% also reviewed:
American Sniper by Bradley Cooper
2% also reviewed:
Mad Max: Fury Road (Special Edition DVD) by Tom Hardy
2% also reviewed:
Mission: Impossible V - Rogue Nation by Tom Cruise
2% also reviewed:
Terminator Genisys Exclusive Limited Edition... by Paramount Pictures
Does not include products
from the same brand
from the same brand
2,447 of a random sample of 14,073 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 Brand Repeats
Brand Repeats
Brand Repeaters
211 of a random sample of 14,073 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.
2 of the 14,152 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, or check out our study showing that Incentivized Reviewers are much more likely to leave a positive review.