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The Adventures of Sherlock Holmes (Penguin Clothbound Classics)
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From Arthur Conan Doyle
This report was last updated 9/19/2018.
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Refresh the report to view the most up-to-date data available:
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Report Info:
Note: We only analyze "reviews" and ignore one-tap "ratings".
Report Card
Fail Overall Grade
FAIL Reviewer Ease
WARN Deleted Reviews
WARN Rating Trend
WARN Suspicious Reviewers
PASS Unverified Purchases
PASS Word Count Comparison
PASS Phrase Repetition
PASS Overlapping Review History
PASS Reviewer Participation
PASS Brand Repeats
PASS Incentivized Reviews
Most Trusted Reviews
Clive Merrison and Michael Williams make a superb Holmes and ... [Go to full review]
May 13, 2010
100%
TRUST
TRUST
- Verified Purchaser
- Critical Reviewer (avg. rating: 3.9)
Least Trusted Reviews
My 2nd best book ever, , have not read it ... [Go to full review]
Dec 1, 2012
0%
TRUST
TRUST
- Verified Purchaser
- Created on a high volume day
- One-Hit Wonder
- Easy Grader (avg. rating: 5.0)
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 4.4. 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
4.4 Category's Average Ease Score
Read more about our Reviewer Ease test.
Warn Deleted Reviews
We discovered a total of 53 deleted Reviews for this product, with an average rating of 4.5. 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
-
- 9%
- Created over 35 days
We counted 1,661 reviews for this product over the span of 7,006 days, an average of 0.2 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 35 days exceeding this threshold:In total, we found that 157 reviews were created on just 35 days. Although any days with a larger number of reviews than expected is suspicious, these reviews do not appear to have a significant impact on the overall rating.
Warn Suspicious Reviewers
One-Hit Wonders
278 of the 1,661 reviewers have only reviewed this product. While this is more One-Hit Wonders than we'd expect to see, it does not appear to have a significant impact on the overall rating.
Take-Back Reviewers
82 of the 1,661 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.
Pass Unverified Purchases
280 of the 1,661 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
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- 0%
- Have an overrepresented word count
We didn't find any review word count groups that had a statistically significant greater concentration than what we'd expect to see in this category.
Read more about our Word Count Comparison test.
Read more about our Word Count Comparison test.
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:
Show MoreShow Less
77 reviews
(4.6/5)
(4.6/5)
44 reviews
(4.7/5)
(4.7/5)
36 reviews
(4.5/5)
(4.5/5)
28 reviews
(4.9/5)
(4.9/5)
51 reviews
(4.4/5)
(4.4/5)
32 reviews
(4.4/5)
(4.4/5)
16 reviews
(4.6/5)
(4.6/5)
15 reviews
(4.3/5)
(4.3/5)
24 reviews
(4.5/5)
(4.5/5)
33 reviews
(4.3/5)
(4.3/5)
120 of the 1,661 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:
6% also reviewed:
Lord of the Rings Book: With Bookends by J. R. R. Tolkien
6% also reviewed:
Dracula (Original Classics) by Bram Stoker
5% also reviewed:
Fifty Shades of Grey: The #1 Sunday Times... by E L James
4% also reviewed:
A Christmas Carol by Charles Dickens: Vook... by Joe Author
4% also reviewed:
Treasure Island by Robert Louis Stevenson
3% also reviewed:
Alice's Adventures in Wonderland: An edition... by Lewis Carroll
3% also reviewed:
The Hunger Games Trilogy - 3 Book Set by The Hunger Games
3% also reviewed:
Kindle Keyboard, Wi-Fi, 6” E Ink Display by Amazon
Does not include products
from the same brand
from the same brand
341 of the 1,661 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 Participation
-
- 0%
- From reviewers with an overrepresented participation
We didn't find any participation groups that had a statistically significant greater concentration than what we'd expect to see in this category.
Read more about our Reviewer Participation test.
Read more about our Reviewer Participation test.
Pass Brand Repeats
Brand Repeaters
98 of the 1,661 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.