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Sonic Handheld Percussion Massage Gun - Deep Tissue Massager for Sore Muscle and Stiffness - Quiet,...
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From J. D. Robb
This report was last updated 11/25/2019.
Refresh the report to view the most up-to-date data available:
Refresh the report to view the most up-to-date data available:
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Report Info:
Note: While Amazon.com claims 1,839 Ratings, we counted 1,837 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".
Report Card
Fail Overall Grade
FAIL 
Suspicious Reviewers
Suspicious ReviewersFAIL Reviewer Ease
Reviewer EaseFAIL Phrase Repetition
Phrase RepetitionWARN Rating Trend
Rating TrendWARN Word Count Comparison
Word Count ComparisonWARN Reviewer Participation
Reviewer ParticipationPASS Unverified Purchases
Unverified PurchasesPASS Overlapping Review History
Overlapping Review HistoryPASS Brand Repeats
Brand RepeatsPASS Incentivized Reviews
Incentivized ReviewsPASS Deleted Reviews
Deleted Reviews
Most Trusted Reviews
We couldn't find any quality reviews
Least Trusted Reviews
Don't trust the great 5 star review on this - ... [Go to full review]
Nov 24, 2019
46%
TRUST
TRUST
-
Unverified Purchaser -
Overrepresented word count (20 words)
-
Take-Back Reviewer (2 deleted Reviews; avg. rating: 1.5) -
Overrepresented Participation (posted 22 Reviews) -
Critical Reviewer (avg. rating: 1.5)
Analysis Details
Fail Suspicious Reviewers
Suspicious Reviewers
Never-Verified Reviewers
15 of the 1,837 reviewers have never written a verified purchase review. The Never-Verified Reviewers have rated this product an average of 3.7 while the reviewers who have written at least one verified purchase review rated this product an average of 4.8. 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.
Fail Reviewer Ease
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.
Fail Phrase Repetition
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
104 reviews
(5.0/5)
(5.0/5)
31 reviews
(5.0/5)
(5.0/5)
81 reviews
(5.0/5)
(5.0/5)
52 reviews
(4.9/5)
(4.9/5)
32 reviews
(5.0/5)
(5.0/5)
25 reviews
(4.8/5)
(4.8/5)
21 reviews
(4.9/5)
(4.9/5)
64 reviews
(4.8/5)
(4.8/5)
39 reviews
(4.8/5)
(4.8/5)
21 reviews
(4.9/5)
(4.9/5)
267 of the 1,837 total reviews for this product use substantial repetitive phrases between them. These reviewers have rated this product an average of 4.9 while reviews without substantial repetitive phrases rated this product an average of 4.7. 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.
Warn Rating Trend
Rating Trend
-
- 50%
- Created over 51 days
We counted 1,837 reviews for this product over the span of 1,020 days, an average of 1.8 reviews per day. If these reviews were created randomly, there would be a 99.9% chance that we would see 8 or fewer reviews on any given day.
However, we see the following 51 days exceeding this threshold:In total, we found that 914 reviews were created on just 51 days. This is an excessively high number of reviews submitted on these high volume days.
Warn Word Count Comparison
Word Count Comparison
-
- 50%
- 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:In total, we found that 927 reviews (or 50%) are within an overrepresented word count group. This is an excessively high number of reviews in overrepresented word count groups.
Warn Reviewer Participation
Reviewer Participation
-
- 72%
- From reviewers with an overrepresented participation
We see the following 3 participation groups with a statistically significant greater concentration than what we'd expect to see:In total, we found that 1331 reviewers (or 72%) are within an overrepresented participation group. This is an excessively high number of reviewers in overrepresented participation groups.
Pass Unverified Purchases
Unverified Purchases
213 of the 1,837 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 Overlapping Review History
Overlapping Review History
Reviewers of this product have ALSO reviewed the following products:
12% also reviewed:
Obsession in Death (In Death Series) by Robb, J. D.
11% also reviewed:
Devoted in Death by J. D. Robb
10% also reviewed:
The Liar by Nora Roberts
8% also reviewed:
The Obsession by Nora Roberts
8% also reviewed:
Festive in Death (In Death, Book 39) by J. D. Robb
8% also reviewed:
Concealed in Death by J. D. Robb
842 of the 1,837 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 Repeats
Brand Repeaters
We didn't detect a substantial amount of Brand Repeaters.
Pass Incentivized Reviews
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 1,837 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.
Pass Deleted Reviews
Deleted Reviews
- 0
- Reviews have been deleted
We have not discovered any deleted reviews for this product.
There are a few limitations to keep in mind regarding the Deleted Reviews test:
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.