Report Last Updated: Jun 12, 2017
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Most Trusted Reviews
- Verified Purchaser
- Overrepresented word count (10 words)
- Easy Grader (avg. rating: 4.6)
Least Trusted Reviews
- Verified Purchaser
- Created on a high volume day
- Overrepresented word count (14 words)
- Contains repetitive phrases (show)
- Take-Back Reviewer (1 deleted review; avg. rating: 5.0)
- Overrepresented Participation (posted 16 reviews)
- Critical Reviewer (avg. rating: 4.1)
1,326 of the 13,172 reviewers have had at least one of their past reviews for another product deleted. This is an excessively large percentage of Take-Back Reviewers which may indicate unnatural reviews.
4.3 Product's Average Ease Score
4.2 Category's Average Ease Score
Read more about our Reviewer Ease test.
- 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 2 groups with a statistically significant greater concentration than what we'd expect to see:
134 of the 13,172 total reviews for this product use substantial repetitive phrases between them. These reviewers have rated this product an average of 4.7 while reviews without substantial repetitive phrases rated this product an average of 4.5. 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.
Example critical reviews
0.2 average net helpfulness for positive reviews
-9.4 average net helpfulness for negative reviews
Read more about our Skewed Helpfulness test.
We discovered a total of 9 deleted reviews for this product, with an average rating of 4.6. 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.
4.6 average rating of deleted reviews
Read more about our Deleted Reviews test.
- Created over 69 days
We counted 13,172 reviews for this product over the span of 484 days, an average of 27.2 reviews per day. If these reviews were created randomly, there would be a 99.9% chance that we would see 46 or fewer reviews on any given day.
However, we see the following 69 days exceeding this threshold:
- 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:
952 of the 13,172 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.
from the same brand
2,296 of the 13,172 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.
309 of the 13,172 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.
- Admitted to receiving an incentive
Read more about our Incentivized Reviews test, or check out our study showing that Incentivized Reviewers are much more likely to leave a positive review.