Note: While Amazon.co.uk claims 101,141 Ratings, we counted 25,251 Reviews available on their site. Note: We only analyze "reviews" and ignore one-tap "ratings".
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Report Date: 3/30/2021 Click here to update
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We discovered a total of 630 deleted Reviews for this product, with an average rating of 4.7. 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.
We counted 25,251 reviews for this product over the span of 3,766 days, an average of 6.7 reviews per day. If these reviews were created randomly, there would be a 99.9% chance that we would see 17 or fewer reviews on any given day.
However, we see the following 171 days exceeding this threshold:
In total, we found that 4,145 reviews were created on just 171 days. This is an excessively high number of reviews submitted on these high volume days.
3,754 of the 25,251 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.
In total, we found that 22145 reviewers (or 88%) 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
1,080 of the 25,251 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
4.1
4.7
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
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.
559 of the 25,251 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.
from reviews with substantial repetitive phrases
from reviews without substantial repetitive phrases
1,959 of the 25,251 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
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 4.6, while the average ease score for reviewers in this category is 4.5. While this discrepancy is rather large, it is not quite large enough to rule out the possibility of it being due random chance.
2,092 of the 25,251 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.
2 of the 25,251 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.