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The Nightingale: A Novel
More product info From Kristin Hannah

The Nightingale: A Novel View product on Amazon.com
Amazon Reviews for The Nightingale: A Novel
Rating:
66,330 Ratings
35,480 Reviews
("Ratings" vs. "Reviews")
69% of potentially unnatural reviews removed (why?)
Adjusted:
10,938 Reviews



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Last Updated: May 5, 2021
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Note: While Amazon.com claims 66,330 Ratings, we counted 35,480 Reviews available on their site.
Note: We only analyze "reviews" and ignore one-tap "ratings".

Report Card

Fail Overall Grade
FAIL Reviewer Ease
FAIL Phrase Repetition
WARN Deleted Reviews
WARN Rating Trend
WARN Suspicious Reviewers
WARN Word Count Comparison
WARN Reviewer Participation
PASS Unverified Purchases
PASS Overlapping Review History
PASS Brand Repeats
PASS Incentivized Reviews

Most Trusted Reviews

5/5
Excellent!
This is one of the best books I've read. I ... [Go to full review]
Jun 13, 2015      
59% TRUST
  • Verified Purchaser
  • Created on a high volume day
  • Take-Back Reviewer (1 deleted Review; avg. rating: 3.0)
  • Brand Repeater (4 of 94 reviews for this brand; avg rating: 4.8)
  • Overlapping Review History: reviewed 3 of 9 top products
  • Easy Grader (avg. rating: 4.2)

Show More

Least Trusted Reviews

5/5
What a great story of survival
Couldn't put this book down. I cant believe the atrocities ... [Go to full review]
Jul 13, 2015      
0% TRUST
  • Verified Purchaser
  • Created on a high volume day
  • Overrepresented word count (20 words)
  • Contains repetitive phrases (show)
  • Take-Back Reviewer (2 deleted Reviews; avg. rating: 4.5)
  • Overlapping Review History: reviewed 1 of 9 top products
  • Overrepresented Participation (posted 12 Reviews)
  • Easy Grader (avg. rating: 4.5)

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Report inaccurate data

Analysis Details

Fail 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 4.2. 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.

4.4 Product's Average Ease Score

4.2 Category's Average Ease Score


4.4
4.2

Read more about our Reviewer Ease test.


Fail 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:
couldn't put it down

1603 reviews
(5.0/5)
could not put it down

755 reviews
(5.0/5)
world war ii

1111 reviews
(4.9/5)
put this book down

623 reviews
(5.0/5)
i could not put

767 reviews
(5.0/5)
during world war

584 reviews
(4.9/5)
france during wwii

464 reviews
(4.8/5)
very well written

734 reviews
(4.9/5)
hard to put down

560 reviews
(4.9/5)
highly recommend this book

428 reviews
(5.0/5)
Show MoreShow Less
Common Phrases in Titles:
must read

840 reviews
(5.0/5)


4,571 of the 35,480 total reviews for this product use substantial repetitive phrases between them. These reviewers have rated this product an average of 4.9 while reviews without substantial repetitive phrases rated this product an average of 4.8. 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.

from reviews with substantial repetitive phrases

from reviews without substantial repetitive phrases


4.9
4.8

Read more about our Phrase Repetition test.

Warn Deleted Reviews

We discovered a total of 342 deleted Reviews for this product, with an average rating of 4.8. 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:
  1. 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.
  2. We have no information on reviews that were never published in the first place.
  3. 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.
Read more about our Deleted Reviews test.

4.8 average rating of deleted reviews

4.8

Show distribution of deleted reviews

Warn Rating Trend

  • 61%
  • Created over 344 days

We counted 35,480 reviews for this product over the span of 2,281 days, an average of 15.6 reviews per day. If these reviews were created randomly, there would be a 99.9% chance that we would see 30 or fewer reviews on any given day.

However, we see the following 344 days exceeding this threshold:In total, we found that 21,740 reviews were created on just 344 days. This is an excessively high number of reviews submitted on these high volume days.

from reviews created on high volume days

from reviews created on normal volume days


4.8
4.8

Read more about our Rating Trend test.

Warn Suspicious Reviewers

Take-Back Reviewers


9,453 of the 35,480 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.

from take-back reviewers

from reviewers without previously deleted reviews


4.8
4.8

Read more about our Suspicious Reviewers test.

Warn Word Count Comparison

  • 60%
  • 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 3 groups with a statistically significant greater concentration than what we'd expect to see:In total, we found that 21,164 reviews (or 60%) are within an overrepresented word count group. This is an excessively high number of reviews in overrepresented word count groups.

from reviews with an overrepresented word count

from reviews with a properly represented word count


4.8
4.8

Read more about our Word Count Comparison test.

Warn Reviewer Participation

  • 68%
  • 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 24235 reviewers (or 68%) are within an overrepresented participation group. This is an excessively high number of reviewers in overrepresented participation groups.

From reviewers with an overrepresented participation

From reviewers with a properly represented participation


4.8
4.8

Read more about our Reviewer Participation test.

Pass Unverified Purchases

4,889 of the 35,480 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.

from unverified purchasers

from verified purchases


4.7
4.8

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 Overlapping Review History
Reviewers of this product have ALSO reviewed the following products:


6% also reviewed:
All the Light We Cannot See: A Novel by Anthony Doerr


4% also reviewed:
Orphan Train by Christina Baker Kline


3% also reviewed:
Beneath a Scarlet Sky: A Novel by Mark Sullivan


3% also reviewed:
The Goldfinch by Donna Tartt


3% also reviewed:
A Man Called Ove: A Novel by Fredrik Backman


3% also reviewed:
Before We Were Yours: A Novel by Lisa Wingate


3% also reviewed:
Big Little Lies (Movie Tie-In) by Liane Moriarty


3% also reviewed:
The Husband's Secret by Liane Moriarty


2% also reviewed:
Gone Girl: A Novel by Julia Whelan

Show More Show Less
Does not include products
from the same brand


7,683 of the 35,480 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.

from reviewers with substantial overlapping history

from reviewers without a substantial overlapping history


4.8
4.8

Read more about our Overlapping Review History test.

Pass Brand Repeats

Brand Repeaters


2,168 of the 35,480 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.

from Brand Repeaters

from Non-Repeaters


4.9
4.8

Read more about our Brand Repeats test.

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.


31 of the 35,480 total reviews for this product admitted to receiving a free or discounted product in exchange for a review. This is within an acceptable range and it does not appear to be significantly affecting the overall rating for this product.

from incentivized reviews

from non-incentivized reviews


4.7
4.8

Read more about our Incentivized Reviews test. Check out our study showing that Incentivized Reviewers are much more likely to leave a positive review.