Zyllion ZMA17BK Waterproof Handheld Wireless Vibrating Massager (Black)
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- Take-Back Reviewer (2 deleted reviews; avg. rating: 3.0)
- Critical Reviewer (avg. rating: 3.7)
We discovered a total of 15 deleted reviews for this product, with an average rating of 3.7. 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.
3.7 average rating of deleted reviews
Show distribution of deleted reviews
20 of the 64 reviewers have reviewed other products for this brand. While this is more Brand Repeaters than we'd expect to see, it does not appear to have a significant impact on the overall rating.
9 of the 64 reviewers have reviewed multiple products, but only for this brand. This is an excessively large percentage of Brand Monogamists which may indicate unnatural reviews.
7 of the 64 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.
14 of the 64 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.
5% also reviewed:
Kimberly-Clark Professional 55083 PURPLE NITRILE... by Kimberly-Clark Professional
from the same brand
7 of the 64 reviewers have substantial overlapping product review history. These reviewers have rated this product an average of 4.6 while the reviewers who have a more unique product review history rated this product an average of 3.2. 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.
2 of the 64 total reviews for this product use substantial repetitive phrases between them. This is an excessively large percentage which may indicate unnatural reviews.
- Created on high-volume days
Read more about our Rating Trend test.
6 of the 64 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.
- Have an overrepresented word count
Read more about our Word Count Comparison test.
- From reviewers with an overrepresented participation
Read more about our Reviewer Participation test.
3.9 Product's Average Ease Score
4.3 Category's Average Ease Score
Read more about our Reviewer Ease test.
1 of the 64 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, or check out our study showing that Incentivized Reviewers are much more likely to leave a positive review.