Keeper: The breath-taking literary thriller
More product info
From Jessica Moor
Refresh the report to view the most up-to-date data available:
Note: We only analyze "reviews" and ignore one-tap "ratings".
Report Card
Most Trusted Reviews
TRUST
- Verified Purchaser
- Take-Back Reviewer (1 deleted Review; avg. rating: 3.0)
- Easy Grader (avg. rating: 4.5)
Least Trusted Reviews
TRUST
- Unverified Purchaser
- Created on a high volume day
- Admitted to receiving an incentive
- Contains repetitive phrases (show)
- Take-Back Reviewer (4 deleted Reviews; avg. rating: 4.3)
- Overlapping Review History: reviewed 2 of 9 top products
- Overrepresented Participation (posted 81 Reviews)
- Easy Grader (avg. rating: 4.6)
Analysis Details
-
- 51%
- Created over 6 days
We counted 162 reviews for this product over the span of 327 days, an average of 0.5 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 6 days exceeding this threshold:In total, we found that 83 reviews were created on just 6 days. This is an excessively high number of reviews submitted on these high volume days.
148 of the 162 total reviews for this product are unverified purchases. This is an excessively large percentage of unverified purchases and it may indicate unnatural reviews.
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.
16 of the 162 total reviews for this product admitted to receiving a free or discounted product in exchange for a review. This is more than we would expect see; the presences of at least one incentivized review indicates that there may be more, since not all reviewers will disclose that they had received an incentive to post a 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.
Never-Verified Reviewers
38 of the 162 reviewers have never written a verified purchase review. While this is more Never-Verified Reviewers than we'd expect to see, the discrepancy in ratings between the Never-Verified Reviewers and reviewers who have written at least one verified purchase review isn't significant enough to rule out the possibility of it being due to random chance.
4.4 Product's Average Ease Score
4.2 Category's Average Ease Score
Read more about our Reviewer Ease test.
(3.7/5)
(4.5/5)
(4.4/5)
(4.1/5)
(3.9/5)
(4.0/5)
(4.5/5)
(4.2/5)
(4.0/5)
(3.9/5)
121 of the 162 total reviews for this product use substantial repetitive phrases between them. This is an excessively large percentage which may indicate unnatural reviews.
26% also reviewed:
The Thursday Murder Club by Richard Osman
23% also reviewed:
The Silent Patient: The record-breaking,... by Alex Michaelides
23% also reviewed:
Strangers: From the author of Sunday Times... by C.L. Taylor
22% also reviewed:
All the Rage: The new ‘impossible to put... by Cara Hunter
19% also reviewed:
Rules for Perfect Murders: The 'fiendishly good'... by Peter Swanson
17% also reviewed:
The Rumour: The bestselling ebook of 2019, with a... by Lesley Kara
15% also reviewed:
The Postscript Murders: a gripping new mystery... by Elly Griffiths
14% also reviewed:
Believe Me: The twisty and addictive follow-up to... by JP Delaney
13% also reviewed:
Everything Is Lies: From the Sunday Times... by Helen Callaghan
105 of the 162 reviewers have substantial overlapping product review history. While this is more than we'd expect to see, it does not appear to have a significant impact on the overall rating.
-
- 40%
- 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 64 reviewers (or 40%) are within an overrepresented participation group. While this is more reviews from overrepresented participation groups than we'd expect to see, these reviews do not appear to have a significant impact on the overall rating.
-
- 0%
- Have an overrepresented word count
Read more about our Word Count Comparison test.
Brand Repeaters
- 0
- Reviews have been deleted
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.