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Batman: The Black Mirror (Detective Comics (1937-2011))
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From Scott Snyder
This report was last updated 5/9/2020.
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 Card
Fail Overall Grade
FAIL Reviewer Ease
FAIL Reviewer Participation
WARN Suspicious Reviewers
WARN Phrase Repetition
PASS Rating Trend
PASS Unverified Purchases
PASS Word Count Comparison
PASS Overlapping Review History
PASS Brand Repeats
PASS Incentivized Reviews
PASS Deleted Reviews
Most Trusted Reviews
I'm a big Dick Grayson fan and a lot of ... [Go to full review]
Jan 24, 2019
100%
TRUST
TRUST
- Verified Purchaser
- Critical Reviewer (avg. rating: 4.0)
Least Trusted Reviews
Buy this book. I really couldn't recommend anything less. If ... [Go to full review]
Jan 10, 2013
0%
TRUST
TRUST
- Unverified Purchaser
- Contains repetitive phrases (show)
- Take-Back Reviewer (1 deleted Review; avg. rating: 5.0)
- Overrepresented Participation (posted 6 Reviews)
- Easy Grader (avg. rating: 4.7)
Analysis Details
Fail 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 4.4, 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.
4.4 Product's Average Ease Score
4.3 Category's Average Ease Score
Read more about our Reviewer Ease test.
Fail Reviewer Participation
-
- 55%
- 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 152 reviewers (or 55%) are within an overrepresented participation group. These reviews have rated this product an average of 4.7, while all other reviews 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.
Warn Suspicious Reviewers
Take-Back Reviewers
75 of the 277 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 Phrase Repetition
Reviews that contain one of these phrases are NOT necessarily devalued; read more about how this test works here.
Common Phrases in Reviews:
Show MoreShow Less
4 reviews
(5.0/5)
(5.0/5)
4 reviews
(4.5/5)
(4.5/5)
22 reviews
(4.6/5)
(4.6/5)
13 reviews
(4.6/5)
(4.6/5)
12 reviews
(4.8/5)
(4.8/5)
2 reviews
(5.0/5)
(5.0/5)
3 reviews
(4.7/5)
(4.7/5)
9 reviews
(4.7/5)
(4.7/5)
9 reviews
(4.7/5)
(4.7/5)
11 reviews
(4.4/5)
(4.4/5)
93 of the 277 total reviews for this product use substantial repetitive phrases between them. This is an excessively large percentage which may indicate unnatural reviews.
Pass Rating Trend
-
- 0%
- Created over 9 days
We counted 277 reviews for this product over the span of 3,070 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 9 days exceeding this threshold:
Read more about our Rating Trend test.
However, we see the following 9 days exceeding this threshold:
- 10 Reviews on Dec 28, 2014 (Avg. rating: 5.0)
- 6 Reviews on Dec 29, 2014 (Avg. rating: 4.7)
- 5 Reviews on Jan 4, 2015 (Avg. rating: 4.8)
- 4 Reviews on Jan 16, 2015 (Avg. rating: 5.0)
- 4 Reviews on Jul 30, 2015 (Avg. rating: 5.0)
- 4 Reviews on Jan 12, 2015 (Avg. rating: 4.8) Show All
Read more about our Rating Trend test.
Pass Unverified Purchases
80 of the 277 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 Word Count Comparison
-
- 0%
- Have an overrepresented word count
We didn't find any review word count groups that had a statistically significant greater concentration than what we'd expect to see in this category.
Read more about our Word Count Comparison test.
Read more about our Word Count Comparison test.
Pass Overlapping Review History
Reviewers of this product have ALSO reviewed the following products:
13% also reviewed:
Batman Vol. 1: The Court of Owls (The New 52) by DC Comics
12% also reviewed:
Batman: Hush Unwrapped Deluxe by DC Comics
10% also reviewed:
Naham WiFi HD 1080P Mini Hidden Spy Camera... by Naham
10% also reviewed:
Batman & Robin, Vol. 2: Batman vs. Robin by DC Comics
10% also reviewed:
The Walking Dead, Vol. 15: We Find Ourselves by Robert Kirkman
9% also reviewed:
Batman: The Killing Joke, Deluxe Edition by DC Comics
8% also reviewed:
Batman: Year One by Frank Miller
8% also reviewed:
Batman: The Dark Knight Returns by Frank Miller
Does not include products
from the same brand
from the same brand
85 of the 277 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 Repeaters
63 of the 277 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
On Oct 3, 2016, Amazon prohibited incentivized reviews, however we still test for them since there are still millions in our dataset.
-
- 0%
- Admitted to receiving an incentive
We didn't detect any reviews that used language indicating they were incentivized.
Read more about our Incentivized Reviews test. Check out our study showing that Incentivized Reviewers are much more likely to leave a positive review.
Read more about our Incentivized Reviews test. Check out our study showing that Incentivized Reviewers are much more likely to leave a positive review.
Pass Deleted Reviews
- 0
- Reviews have been deleted
We have not discovered any deleted reviews for this product.
There are a few limitations to keep in mind regarding the Deleted Reviews test:
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.