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Amazon.com > Electronics > Headphones, Earbuds & Accessories > Headphones & Earbuds > Earbud Headphones
Bluetooth Headphones, Bluetooth 4.2 Runner Headset Sport Earphones with Mic Stereo Noise Cancelling...
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From A.C Corporation
This report was last updated 12/26/2018.
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Report Info:
Note: We only analyze "reviews" and ignore one-tap "ratings".
Report Card
Fail Overall Grade
FAIL Rating Trend
FAIL Unverified Purchases
FAIL Suspicious Reviewers
FAIL Reviewer Ease
FAIL Overlapping Review History
WARN Word Count Comparison
WARN Phrase Repetition
PASS Reviewer Participation
PASS Brand Repeats
PASS Incentivized Reviews
PASS Deleted Reviews
Most Trusted Reviews
We couldn't find any quality reviewsLeast Trusted Reviews
GREAT PRODUCT I GOT , HIGH QUALITY AND GOOD PRICE [Go to full review]
Dec 24, 2018
0%
TRUST
TRUST
- Unverified Purchaser
- Created on a high volume day
- Overrepresented word count (9 words)
- Contains repetitive phrases (show)
- Never-Verified Reviewer
- Take-Back Reviewer (4 deleted Reviews; avg. rating: 4.5)
- Brand Repeater (5 of 96 reviews for this brand; avg rating: 5.0)
- Overlapping Review History: reviewed 5 of 9 top products
- Easy Grader (avg. rating: 5.0)
Analysis Details
Fail Rating Trend
-
- 97%
- Created over 5 days
We counted 282 reviews for this product over the span of 85 days, an average of 3.3 reviews per day. If these reviews were created randomly, there would be a 99.9% chance that we would see 11 or fewer reviews on any given day.
However, we see the following 5 days exceeding this threshold:In total, we found that 273 reviews were created on just 5 days. The reviews on these high volume days have rated this product an average of 5.0 while reviews from other days have rated this product an average of 3.9. 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.
Fail Unverified Purchases
278 of the 282 total reviews for this product are unverified purchases. The unverified purchasers have rated this product an average of 5.0 while the verified purchasers have rated this product an average of 2.5. 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.
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 Suspicious Reviewers
Never-Verified Reviewers
203 of the 282 reviewers have never written a verified purchase review. This is an excessively large percentage of Never-Verified Reviewers which may indicate unnatural reviews.
Take-Back Reviewers
5 of the 282 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, it does not appear to have a significant impact on the overall rating.
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 4.8, while the average ease score for reviewers in this category is 4.1. 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.
4.8 Product's Average Ease Score
4.1 Category's Average Ease Score
Read more about our Reviewer Ease test.
Fail Overlapping Review History
Reviewers of this product have ALSO reviewed the following products:
101% also reviewed:
USB Cable Nylon Braided Durable USB Wire Data... by Zotoyi
78% also reviewed:
Larnn Bluetooth Headphone Non Ear Plug Wireless... by Larnn
48% also reviewed:
TDYY Bluetooth Headphone Supreme Wireless Earbuds... by TDYY
46% also reviewed:
Wireless Headphone Vidgoo V5.0 Bluetooth... by Vidgoo
38% also reviewed:
Wireless Headphones Over Ear Stereo Bluetooth... by beegod
33% also reviewed:
Bluetooth Headphones Over-Ear Headset with... by TDYY
277 of the 282 reviewers have substantial overlapping product review history. These reviewers have rated this product an average of 5.0 while the reviewers who have a more unique product review history rated this product an average of 3.0. 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 Word Count Comparison
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- 75%
- 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 212 reviews (or 75%) are within an overrepresented word count group. This is an excessively high number of reviews in overrepresented word count groups.
Warn 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
4 reviews
(5.0/5)
(5.0/5)
3 reviews
(5.0/5)
(5.0/5)
4 reviews
(5.0/5)
(5.0/5)
4 reviews
(5.0/5)
(5.0/5)
3 reviews
(5.0/5)
(5.0/5)
6 reviews
(5.0/5)
(5.0/5)
3 reviews
(5.0/5)
(5.0/5)
3 reviews
(5.0/5)
(5.0/5)
174 of the 282 total reviews for this product use substantial repetitive phrases between them. This is an excessively large percentage which may indicate unnatural reviews.
Pass Reviewer Participation
-
- 16%
- From reviewers with an overrepresented participation
We see the following 1 participation group with a statistically significant greater concentration than what we'd expect to see:In total, we found that 44 reviewers (or 16%) are within an overrepresented participation group. 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 Repeaters
We didn't detect a substantial amount of Brand Repeaters.
Pass Incentivized Reviews
On Oct 3, 2016, Amazon prohibited incentivized reviews, however we still test for them since there are still millions in our dataset.
-
- 0%
- Admitted to receiving an incentive
We didn't detect any reviews that used language indicating they were incentivized.
Read more about our Incentivized Reviews test. Check out our study showing that Incentivized Reviewers are much more likely to leave a positive review.
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
- 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.