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Overkill
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From Motorhead
This report was last updated 5/14/2017.
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Report Info:
Last Updated: May 14, 2017
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Note: We only analyze "reviews" and ignore one-tap "ratings".
Report Card
Pass Overall Grade
FAIL Rating Trend
FAIL Suspicious Reviewers
FAIL Reviewer Ease
WARN Brand Repeats
WARN Phrase Repetition
WARN Reviewer Participation
PASS Unverified Purchases
PASS Word Count Comparison
PASS Overlapping Review History
PASS Incentivized Reviews
PASS Deleted Reviews
Most Trusted Reviews
when i hear this bad nasty music i feel that ... [Go to full review]
Aug 26, 2007
100%
TRUST
TRUST
- Unverified Purchaser
- Never-Verified Reviewer
- Take-Back Reviewer (3 deleted Reviews; avg. rating: 5.0)
- Brand Repeater (2 of 241 reviews for this brand; avg rating: 4.0)
- Overlapping Review History: reviewed 3 of 9 top products
- Easy Grader (avg. rating: 4.3)
Least Trusted Reviews
I am torn here. I almost couldn't bring myself to ... [Go to full review]
Jun 18, 2015
0%
TRUST
TRUST
- Verified Purchaser
- Created on a high volume day
- Take-Back Reviewer (1 deleted Review; avg. rating: 5.0)
- Overrepresented Participation (posted 41 Reviews)
- Easy Grader (avg. rating: 4.6)
Analysis Details
Fail Rating Trend
-
- 5%
- Created over 2 days
We counted 82 reviews for this product over the span of 5,369 days, an average of 0.0 reviews per day. If these reviews were created randomly, there would be a 99.9% chance that we would see 1 or fewer reviews on any given day.
However, we see the following 2 days exceeding this threshold:In total, we found that 4 reviews were created on just 2 days. The reviews on these high volume days have rated this product an average of 3.8 while reviews from other days have rated this product an average of 4.9. 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.
Fail Suspicious Reviewers
One-Hit Wonders
3 of the 82 reviewers have only reviewed this product. The One-Hit Wonders have rated this product an average of 4.0 while the reviewers who have posted more than one review have rated this product an average of 4.9. 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
10 of the 82 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
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 4.5, while the average ease score for reviewers in this category is 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.
4.5 Product's Average Ease Score
4.2 Category's Average Ease Score
Read more about our Reviewer Ease test.
Warn Brand Repeats
Brand Loyalists
2 of the 82 reviewers have reviewed multiple products but half or more of their reviews are for this brand. While this is more Brand Loyalists than we'd expect to see, the discrepancy in ratings between the Brand Loyalists and non-loyalists isn't significant enough to rule out the possibility of it being due to random chance.
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
10 reviews
4 reviews
9 reviews
10 reviews
6 reviews
2 reviews
2 reviews
2 reviews
2 reviews
2 reviews
Common Phrases in Titles:
2 reviews
28 of the 82 total reviews for this product use substantial repetitive phrases between them. This is an excessively large percentage which may indicate unnatural reviews.
Warn Reviewer Participation
-
- 68%
- From reviewers with an overrepresented participation
We see the following 1 participation group with a statistically significant greater concentration than what we'd expect to see:In total, we found that 56 reviewers (or 68%) are within an overrepresented participation group. This is an excessively high number of reviewers in overrepresented participation groups.
Pass Unverified Purchases
26 of the 82 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:
20% also reviewed:
Rust in Peace [Vinyl] by Capitol
20% also reviewed:
St. Anger by Elektra / Wea
18% also reviewed:
Mob Rules by Warner Brothers
18% also reviewed:
Death Magnetic by Rhino Blackened
17% also reviewed:
Heaven And Hell by Warner Off Roster
17% also reviewed:
Led Zeppelin II (Deluxe CD Edition) by LED ZEPPELIN
33 of the 82 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 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.