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To Kill A Mockingbird
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From Harper Lee
This report was last updated 6/7/2019.
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Report Info:
Note: While Amazon.co.uk claims 3,677 Ratings, we counted 3,759 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 Literature & Fiction with authentic reviews:
Report Card
Fail Overall Grade
FAIL Reviewer Ease
WARN Deleted Reviews
WARN Rating Trend
WARN Suspicious Reviewers
WARN Reviewer Participation
PASS Unverified Purchases
PASS Word Count Comparison
PASS Phrase Repetition
PASS Overlapping Review History
PASS Brand Repeats
PASS Incentivized Reviews
Most Trusted Reviews
As expected classic good read and great to have it ... [Go to full review]
Nov 19, 2018
100%
TRUST
TRUST
- Verified Purchaser
- Overrepresented word count (14 words)
- Take-Back Reviewer (2 deleted Reviews; avg. rating: 4.5)
- Easy Grader (avg. rating: 4.4)
Least Trusted Reviews
Quite hard going to start with, but once started you ... [Go to full review]
Sep 18, 2014
10%
TRUST
TRUST
- Verified Purchaser
- Created on a high volume day
- Take-Back Reviewer (3 deleted Reviews; avg. rating: 5.0)
- Overlapping Review History: reviewed 1 of 9 top products
- Overrepresented Participation (posted 18 Reviews)
- Easy Grader (avg. rating: 4.7)
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 4.5, while the average ease score for reviewers in this category is 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.
4.5 Product's Average Ease Score
4.3 Category's Average Ease Score
Read more about our Reviewer Ease test.
Warn Deleted Reviews
We discovered a total of 15 deleted Reviews 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.
Warn Rating Trend
-
- 36%
- Created over 173 days
We counted 3,759 reviews for this product over the span of 7,523 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 173 days exceeding this threshold:In total, we found that 1,359 reviews were created on just 173 days. This is an excessively high number of reviews submitted on these high volume days.
Warn Suspicious Reviewers
Take-Back Reviewers
283 of the 3,759 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 Reviewer Participation
-
- 64%
- 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 2387 reviewers (or 64%) are within an overrepresented participation group. This is an excessively high number of reviewers in overrepresented participation groups.
Pass Unverified Purchases
573 of the 3,759 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
-
- 26%
- 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 971 reviews (or 26%) 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 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:
68 reviews
(5.0/5)
(5.0/5)
121 reviews
(4.8/5)
(4.8/5)
43 reviews
(4.8/5)
(4.8/5)
Common Phrases in Titles:
43 reviews
(4.4/5)
(4.4/5)
42 reviews
(4.4/5)
(4.4/5)
100 of the 3,759 total reviews for this product use substantial repetitive phrases between them. 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:
4% also reviewed:
Persuasion (Oxford World's Classics) by Jane Austen
4% also reviewed:
The Girl on the Train by Paula Hawkins
3% also reviewed:
Gone Girl by Gillian Flynn
3% also reviewed:
Fifty Shades of Grey: The #1 Sunday Times... by E L James
3% also reviewed:
The Hunger Games Trilogy - 3 Book Set by The Hunger Games
2% also reviewed:
The Book Thief: TikTok made me buy it! The... by Markus Zusak
2% also reviewed:
1984 Nineteen Eighty-Four (Penguin Modern... by George Orwell
2% also reviewed:
Me Before You by Jojo Moyes
Does not include products
from the same brand
from the same brand
570 of the 3,759 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 Repeaters
58 of the 3,759 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.
1 of the 3,759 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.
Read more about our Incentivized Reviews test. Check out our study showing that Incentivized Reviewers are much more likely to leave a positive review.