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Ice Cold: A Rizzoli & Isles Novel (Rizzoli & Isles Novels)
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From Ballantine Books
This report was last updated 7/8/2017.
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Report Info:
Last Updated: Jul 8, 2017
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Note: We only analyze "reviews" and ignore one-tap "ratings".
Top products in Medical with authentic reviews:
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Warn Overall Grade
FAIL 
Suspicious Reviewers
Suspicious ReviewersFAIL Reviewer Ease
Reviewer EaseFAIL Phrase Repetition
Phrase RepetitionWARN Rating Trend
Rating TrendWARN Reviewer Participation
Reviewer ParticipationPASS Unverified Purchases
Unverified PurchasesPASS Word Count Comparison
Word Count ComparisonPASS Overlapping Review History
Overlapping Review HistoryPASS Brand Repeats
Brand RepeatsPASS Incentivized Reviews
Incentivized ReviewsPASS Deleted Reviews
Deleted Reviews
Most Trusted Reviews
This wasn't my favorite book in the series, but it ... [Go to full review]
Jun 5, 2017
100%
TRUST
TRUST
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Verified Purchaser
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Take-Back Reviewer (1 deleted Review; avg. rating: 4.0) -
Brand Repeater (2 of 434 reviews for this brand; avg rating: 4.0) -
Overlapping Review History: reviewed 3 of 9 top products -
Critical Reviewer (avg. rating: 3.5)
Least Trusted Reviews
I enjoy murder mystery stories and found this to be ... [Go to full review]
May 5, 2013
0%
TRUST
TRUST
-
Verified Purchaser
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Contains repetitive phrases (
show)
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Single-Day Reviewer (posted all reviews on May 5, 2013) -
Brand Repeater (3 of 11 reviews for this brand; avg rating: 5.0)
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Overlapping Review History: reviewed 2 of 9 top products
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Overrepresented Participation (posted 11 Reviews) -
Easy Grader (avg. rating: 5.0)
Analysis Details
Fail Suspicious Reviewers
Suspicious Reviewers
Take-Back Reviewers
63 of the 1,069 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.
Single-Day Reviewers
13 of the 1,069 reviewers have written multiple reviews but posted all of them on a single day. The Single-Day reviewers have rated this product an average of 4.9 while all other reviewers 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 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 4.2. 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.
4.3 Product's Average Ease Score
4.2 Category's Average Ease Score
Read more about our Reviewer Ease test.
Fail Phrase Repetition
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
16 reviews
12 reviews
118 reviews
28 reviews
24 reviews
15 reviews
11 reviews
43 reviews
19 reviews
31 reviews
Common Phrases in Titles:
21 reviews
23 reviews
27 reviews
185 of the 1,069 total reviews for this product use substantial repetitive phrases between them. These reviewers have rated this product an average of 4.6 while reviews without substantial repetitive phrases 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 Rating Trend
Rating Trend
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- 28%
- Created over 39 days
We counted 1,069 reviews for this product over the span of 2,563 days, an average of 0.4 reviews per day. If these reviews were created randomly, there would be a 99.9% chance that we would see 4 or fewer reviews on any given day.
However, we see the following 39 days exceeding this threshold:In total, we found that 294 reviews were created on just 39 days. This is an excessively high number of reviews submitted on these high volume days.
Warn Reviewer Participation
Reviewer Participation
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- 77%
- 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 821 reviewers (or 77%) are within an overrepresented participation group. This is an excessively high number of reviewers in overrepresented participation groups.
Pass Unverified Purchases
Unverified Purchases
241 of the 1,069 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
Word Count Comparison
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- 18%
- 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 1 group with a statistically significant greater concentration than what we'd expect to see:In total, we found that 194 reviews (or 18%) are within an overrepresented word count group. This is within an acceptable range and it does not appear to be significantly affecting the overall rating for this product.
Pass Overlapping Review History
Overlapping Review History
Reviewers of this product have ALSO reviewed the following products:
9% also reviewed:
The Silent Girl (with bonus short story Freaks):... by Tess Gerritsen
8% also reviewed:
The Surgeon: A Rizzoli & Isles Novel by Tess Gerritsen
6% also reviewed:
Die Again: A Rizzoli & Isles Novel by Tess Gerritsen
4% also reviewed:
The Hunger Games (Hunger Games Trilogy, Book 1) by Suzanne Collins
4% also reviewed:
My Sister's Grave (Tracy Crosswhite Book 1) by Robert Dugoni
4% also reviewed:
The Girl on the Train: A Novel by Paula Hawkins
3% also reviewed:
The Girl Who Kicked the Hornet's Nest (Millennium... by Stieg Larsson
3% also reviewed:
The Drop (A Harry Bosch Novel) by Michael Connelly
Does not include products
from the same brand
from the same brand
280 of the 1,069 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
97 of the 1,069 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.
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- 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
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.