Post Captain (Aubrey/Maturin)
More product info
From W. W. Norton & Company
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Most Trusted Reviews
TRUST
- Verified Purchaser
- Take-Back Reviewer (4 deleted Reviews; avg. rating: 5.0)
- Easy Grader (avg. rating: 4.6)
Least Trusted Reviews
TRUST
- Unverified Purchaser
- Brand Monogamist (2 of 2 reviews for this brand; avg rating: 5.0)
- Overlapping Review History: reviewed 1 of 9 top products
- Overrepresented Participation (posted 2 Reviews)
- Easy Grader (avg. rating: 5.0)
Analysis Details
Brand Repeaters
138 of the 312 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
21 of the 312 reviewers have reviewed multiple products but half or more of their reviews are for this brand. This is an excessively large percentage of Brand Loyalists which may indicate unnatural reviews.
Brand Monogamists
9 of the 312 reviewers have reviewed multiple products, but only for this brand. This is an excessively large percentage of Brand Monogamists which may indicate unnatural reviews.
48% also reviewed:
The Mauritius Command by Patrick O'Brian
14% also reviewed:
Desolation Island (Vol. Book 5) (Aubrey/Maturin... by O'Brian, Patrick
13% also reviewed:
The Surgeon's Mate (Vol. Book 7) (Aubrey/Maturin... by Patrick O'Brian
13% also reviewed:
The Fortune of War (Vol. Book 6) (Aubrey/Maturin... by Patrick O'Brian
9% also reviewed:
Treason's Harbour (Vol. Book 9) (Aubrey/Maturin... by O'Brian, Patrick
9% also reviewed:
Harry Potter Complete Book Series Special Edition... by Unbranded
8% also reviewed:
The Ionian Mission (Vol. Book 8) (Aubrey/Maturin... by Patrick O'Brian
6% also reviewed:
The Nutmeg of Consolation (Aubrey/Maturin Novels,... by Patrick O'Brian
5% also reviewed:
The Commodore (Vol. Book 17) (Aubrey/Maturin... by Patrick O'Brian
4% also reviewed:
The Hunger Games (Hunger Games Trilogy, Book 1) by Suzanne Collins
4% also reviewed:
The Girl Who Played with Fire (Millennium Series... by Stieg Larsson
4% also reviewed:
The Martian: Classroom Edition: A Novel by Andy Weir
3% also reviewed:
Master And Commander: The Far Side Of The World... by Russell Crowe
3% also reviewed:
Harry Potter and the Half-Blood Prince (Harry... by J.K. Rowling
3% also reviewed:
Jonathan Strange & Mr. Norrell by Bloomsbury USA
3% also reviewed:
A Clash of Kings (Song of Ice and Fire) by George R R Martin
3% also reviewed:
Fantastic Four [Blu-ray] by 20th Century
from the same brand
126 of the 312 reviewers have substantial overlapping product review history. These reviewers have rated this product an average of 4.5 while the reviewers who have a more unique product review history 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.
We discovered a total of 1 deleted Review for this product, with an average rating of 5. 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.
Take-Back Reviewers
23 of the 312 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, the discrepancy in ratings between the Take-Back Reviewers and reviewers who don't have any deleted reviews in their history isn't significant enough to rule out the possibility of it being due to random chance.
59 of the 312 total reviews for this product use substantial repetitive phrases between them. This is an excessively large percentage which may indicate unnatural reviews.
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- 76%
- From reviewers with an overrepresented participation
We see the following 5 participation groups with a statistically significant greater concentration than what we'd expect to see:In total, we found that 238 reviewers (or 77%) are within an overrepresented participation group. This is an excessively high number of reviewers in overrepresented participation groups.
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- 1%
- Created over 2 days
We counted 312 reviews for this product over the span of 7,377 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 2 or fewer reviews on any given day.
However, we see the following 2 days exceeding this threshold:In total, we found that 3 reviews were created on just 2 days. This is within an acceptable range and it does not appear to be significantly affecting the overall rating for this product.
77 of the 312 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.
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- 0%
- Have an overrepresented word count
Read more about our Word Count Comparison test.
4.2 Product's Average Ease Score
4.2 Category's Average Ease Score
Read more about our Reviewer Ease test.
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- 0%
- Admitted to receiving an incentive
Read more about our Incentivized Reviews test. Check out our study showing that Incentivized Reviewers are much more likely to leave a positive review.