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The Quartet: Orchestrating the Second American Revolution, 1783-1789
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From Joseph J. Ellis
This report was last updated 8/5/2021.
Refresh the report to view the most up-to-date data available:
Refresh the report to view the most up-to-date data available:
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Report Info:
Note: While Amazon.com claims 664 Ratings, we counted 741 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".
Top products in Americas with authentic reviews:
Report Card
Pass Overall Grade
WARN Deleted Reviews
WARN Rating Trend
WARN Suspicious Reviewers
WARN Phrase Repetition
WARN Reviewer Participation
PASS Unverified Purchases
PASS Word Count Comparison
PASS Overlapping Review History
PASS Reviewer Ease
PASS Brand Repeats
PASS Incentivized Reviews
Most Trusted Reviews
The book helps in my coverage of the Confederation Period. [Go to full review]
Aug 30, 2016
100%
TRUST
TRUST
- Verified Purchaser
- Overrepresented word count (12 words)
- Easy Grader (avg. rating: 5.0)
Least Trusted Reviews
Without overdoing the review, I felt that this book demystified ... [Go to full review]
Jul 21, 2015
5%
TRUST
TRUST
- Verified Purchaser
- Created on a high volume day
- Contains repetitive phrases (show)
- Take-Back Reviewer (2 deleted Reviews; avg. rating: 5.0)
- Overrepresented Participation (posted 24 Reviews)
- Easy Grader (avg. rating: 4.7)
Analysis Details
Warn Deleted Reviews
We discovered a total of 2 deleted Reviews for this product, with an average rating of 4. 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.
Warn Rating Trend
-
- 29%
- Created over 41 days
We counted 741 reviews for this product over the span of 2,236 days, an average of 0.3 reviews per day. If these reviews were created randomly, there would be a 99.9% chance that we would see 3 or fewer reviews on any given day.
However, we see the following 41 days exceeding this threshold:In total, we found that 217 reviews were created on just 41 days. This is an excessively high number of reviews submitted on these high volume days.
Warn Suspicious Reviewers
Take-Back Reviewers
260 of the 741 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.
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
15 reviews
(4.9/5)
(4.9/5)
15 reviews
(4.9/5)
(4.9/5)
65 reviews
(4.7/5)
(4.7/5)
29 reviews
(4.4/5)
(4.4/5)
31 reviews
(4.6/5)
(4.6/5)
10 reviews
(4.7/5)
(4.7/5)
6 reviews
(4.8/5)
(4.8/5)
24 reviews
(4.5/5)
(4.5/5)
17 reviews
(4.8/5)
(4.8/5)
25 reviews
(4.8/5)
(4.8/5)
154 of the 741 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
-
- 71%
- From reviewers with an overrepresented participation
We see the following 3 participation groups with a statistically significant greater concentration than what we'd expect to see:In total, we found that 524 reviewers (or 71%) are within an overrepresented participation group. This is an excessively high number of reviewers in overrepresented participation groups.
Pass Unverified Purchases
107 of the 741 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
-
- 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 133 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
Reviewers of this product have ALSO reviewed the following products:
7% also reviewed:
The Wright Brothers by David McCullough
4% also reviewed:
Alexander Hamilton by Ron Chernow
4% also reviewed:
Dead Wake: The Last Crossing of the Lusitania by Erik Larson
4% also reviewed:
Hillbilly Elegy: A Memoir of a Family and Culture... by J. D. Vance
4% also reviewed:
Thomas Jefferson: The Art of Power by Jon Meacham
3% also reviewed:
All the Light We Cannot See: A Novel by Anthony Doerr
3% also reviewed:
George Washington's Secret Six: The Spy Ring... by Brian Kilmeade
3% also reviewed:
Team of Rivals: The Political Genius of Abraham... by Doris Kearns Goodwin
Does not include products
from the same brand
from the same brand
174 of the 741 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 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 4.3.
4.3 Product's Average Ease Score
4.3 Category's Average Ease Score
Read more about our Reviewer Ease test.
Pass Brand Repeats
Brand Repeaters
27 of the 741 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
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.