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Tripwire (Jack Reacher, Book 3)
More product info
From Lee Child
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Report Info:
Note: While Amazon.co.uk claims 11,565 Ratings, we counted 6,145 Reviews available on their site.
Note: We only analyze "reviews" and ignore one-tap "ratings".
Note: We only analyze "reviews" and ignore one-tap "ratings".
Report Card
Fail Overall Grade
FAIL 
Suspicious Reviewers
Suspicious ReviewersFAIL Word Count Comparison
Word Count ComparisonFAIL Overlapping Review History
Overlapping Review HistoryWARN Deleted Reviews
Deleted ReviewsWARN Rating Trend
Rating TrendWARN Brand Repeats
Brand RepeatsWARN Reviewer Participation
Reviewer ParticipationPASS Unverified Purchases
Unverified PurchasesPASS Phrase Repetition
Phrase RepetitionPASS Reviewer Ease
Reviewer EasePASS Incentivized Reviews
Incentivized Reviews
Most Trusted Reviews
I really enjoyed reading this novel. Jack Reacher is at ... [Go to full review]
Sep 26, 2009
100%
TRUST
TRUST
-
Verified Purchaser
-
Easy Grader (avg. rating: 5.0)
Least Trusted Reviews
Excellent condition [Go to full review]
Sep 18, 2014
0%
TRUST
TRUST
-
Verified Purchaser
-
Created on a high volume day -
Overrepresented word count (2 words)
-
Brand Loyalist (6 of 12 reviews for this brand; avg rating: 4.3) -
Overlapping Review History: reviewed 1 of 9 top products -
Overrepresented Participation (posted 12 Reviews) -
Critical Reviewer (avg. rating: 4.3)
show)
Analysis Details
Fail Suspicious Reviewers
Suspicious Reviewers
Never-Verified Reviewers
179 of the 6,145 reviewers have never written a verified purchase review. The Never-Verified Reviewers have rated this product an average of 3.8 while the reviewers who have written at least one verified purchase review rated this product an average of 4.5. 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 Word Count Comparison
Word Count Comparison
-
- 50%
- 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 3,042 reviews (or 50%) 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.
Fail Overlapping Review History
Overlapping Review History
Reviewers of this product have ALSO reviewed the following products:
6% also reviewed:
Gone Tomorrow: (Jack Reacher 13) by Random House Audiobooks
2% also reviewed:
Fifty Shades of Grey: Book 1 of the Fifty Shades... by E L James
1% also reviewed:
Inferno: (Robert Langdon Book 4) by Dan Brown
1% also reviewed:
Amazon.co.uk Gift Card for Any Amount in a Happy... by Amazon EU S.à.r.l.
1% also reviewed:
The Hunger Games Trilogy - 3 Book Set by The Hunger Games
1% also reviewed:
Certified Refurbished Kindle Paperwhite E-reader,... by Amazon Renewed
1% also reviewed:
The Girl on the Train by Paula Hawkins
1% also reviewed:
Fire TV Stick with Voice Remote | Streaming Media... by Amazon
1,558 of the 6,145 reviewers have substantial overlapping product review history. These reviewers have rated this product an average of 4.6 while the reviewers who have a more unique product review history 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.
Warn Deleted Reviews
Deleted Reviews
We discovered a total of 64 deleted Reviews for this product, with an average rating of 4.7. 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.
4.7 average rating of deleted reviews
Warn Rating Trend
Rating Trend
-
- 30%
- Created over 241 days
We counted 6,145 reviews for this product over the span of 8,238 days, an average of 0.7 reviews per day. If these reviews were created randomly, there would be a 99.9% chance that we would see 5 or fewer reviews on any given day.
However, we see the following 241 days exceeding this threshold:In total, we found that 1,827 reviews were created on just 241 days. This is an excessively high number of reviews submitted on these high volume days.
Warn Brand Repeats
Brand Repeats
Brand Repeaters
1,575 of the 6,145 reviewers have reviewed other products for this brand. While this is more Brand Repeaters than we'd expect to see, the discrepancy in ratings between the Brand Repeaters and non-repeaters isn't significant enough to rule out the possibility of it being due to random chance.
Brand Loyalists
124 of the 6,145 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, it does not appear to have a significant impact on the overall rating.
Warn Reviewer Participation
Reviewer Participation
-
- 63%
- 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 3857 reviewers (or 63%) are within an overrepresented participation group. This is an excessively high number of reviewers in overrepresented participation groups.
Pass Unverified Purchases
Unverified Purchases
658 of the 6,145 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
Reviews that contain one of these phrases are NOT necessarily devalued; read more about how this test works here.
713 of the 6,145 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.
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 4.4, while the average ease score for reviewers in this category is 4.4.
4.4 Product's Average Ease Score
4.4 Category's Average Ease Score
Read more about our Reviewer Ease test.
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.
-
- 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.