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4 in 1 Multi LiPo Battery Charger for UDI U818A Series Drones With 3.7V Batteries - U818A U818A HD...
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From USA Toyz
This report was last updated 11/29/2016.
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Report Info:
Last Updated: Nov 29, 2016
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Note: While Amazon.com claims 16 Ratings, we counted 32 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 Unverified Purchases
FAIL Incentivized Reviews
FAIL Reviewer Ease
WARN Deleted Reviews
WARN Rating Trend
WARN Suspicious Reviewers
WARN Phrase Repetition
WARN Overlapping Review History
PASS Word Count Comparison
PASS Reviewer Participation
PASS Brand Repeats
Most Trusted Reviews
The charger that comes with the quadcopter will charge only ... [Go to full review]
Oct 21, 2016
100%
TRUST
TRUST
- Verified Purchaser
- Brand Repeater (2 of 31 reviews for this brand; avg rating: 4.0)
- Critical Reviewer (avg. rating: 4.0)
Least Trusted Reviews
Hmmm... Not much to review on this one. It works ... [Go to full review]
Jul 18, 2016
0%
TRUST
TRUST
- Unverified Purchaser
- Admitted to receiving an incentive
- Contains repetitive phrases (show)
- Take-Back Reviewer (193 deleted Reviews; avg. rating: 4.7)
- Brand Repeater (2 of 224 reviews for this brand; avg rating: 4.5)
- Overlapping Review History: reviewed 2 of 9 top products
- Easy Grader (avg. rating: 4.6)
Analysis Details
Fail Unverified Purchases
27 of the 32 total reviews for this product are unverified purchases. The unverified purchasers have rated this product an average of 4.4 while the verified purchasers have rated this product an average of 2.8. 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.
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.
Fail Incentivized Reviews
On Oct 3, 2016, Amazon prohibited incentivized reviews, however we still test for them since there are still millions in our dataset.
24 of the 32 total reviews for this product admitted to receiving a free or discounted product in exchange for a review. Incentivized reviews have rated this product an average of 4.6 while reviews that were not incentivized rated this product an average of 2.9. 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.
Read more about our Incentivized Reviews test. Check out our study showing that Incentivized Reviewers are much more likely to leave a positive review.
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 4.6, while the average ease score for reviewers in this category is 4.2. 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.
4.6 Product's Average Ease Score
4.2 Category's Average Ease Score
Read more about our Reviewer Ease test.
Warn Deleted Reviews
We discovered a total of 1 deleted Review for this product, with an average rating of 4. 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
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- 13%
- Created over 1 day
We counted 32 reviews for this product over the span of 116 days, an average of 0.3 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 1 day exceeding this threshold:In total, we found that 4 reviews were created on just 1 day. 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
Take-Back Reviewers
3 of the 32 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.
Warn Phrase Repetition
Reviews that contain one of these phrases are NOT necessarily devalued; read more about how this test works here.
10 of the 32 total reviews for this product use substantial repetitive phrases between them. This is an excessively large percentage which may indicate unnatural reviews.
Warn Overlapping Review History
Reviewers of this product have ALSO reviewed the following products:
34% also reviewed:
Art Naturals® Enhanced Vitamin C Serum with... by ArtNaturals
19% also reviewed:
Art Naturals Organic Argan Oil Hair Loss Shampoo... by Artnaturals
16% also reviewed:
Blackhead Remover Pimple Comedone Extractor Tool... by Crystal Clear Solutions
16% also reviewed:
Art Naturals® Anti Acne Serum Treatment 1 oz-... by ArtNaturals
16% also reviewed:
Art Naturals Enhanced Retinol Cream Moisturizer... by Art Naturals
16% also reviewed:
LeDoux Water Filter Pitcher -64 Cup Large 4... by Ledoux
17 of the 32 reviewers have substantial overlapping product review history. While this is more than we'd expect to see, the discrepancy in ratings between these reviewers and reviewers who have a more unique product review history isn't significant enough to rule out the possibility of it being due to random chance.
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.
Read more about our Word Count Comparison test.
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
4 of the 32 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.