Amazon.co.uk > Electronics & Photo > Accessories > Headphones & Earphones > Home Audio & Video Accessories > Earphones
Betron DC950 Headphones Earphones, Noise Isolating, Bass Driven, High Definition In Ear Canal,...
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Fail Overall Grade
FAIL Rating Trend
FAIL Reviewer Ease
FAIL Word Count Comparison
WARN Deleted Reviews
WARN Brand Repeats
WARN Suspicious Reviewers
WARN Reviewer Participation
PASS Unverified Purchases
PASS Phrase Repetition
PASS Overlapping Review History
PASS Incentivized Reviews
Most Trusted Reviews
Compared to the freebies that came with my Berennis MP3 ... [Go to full review]
Jul 21, 2019
- Verified Purchaser
- Critical Reviewer (avg. rating: 2.7)
Least Trusted Reviews
Excellent Service and great headphones [Go to full review]
Sep 6, 2016
- Verified Purchaser
- Created on a high volume day
- Overrepresented word count (7 words)
- Brand Loyalist (3 of 4 reviews for this brand; avg rating: 5.0)
- Overrepresented Participation (posted 4 reviews)
- Easy Grader (avg. rating: 5.0)
Fail Rating Trend
- Created over 98 days
We counted 3,681 reviews for this product over the span of 1,901 days, an average of 1.9 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 98 days exceeding this threshold:
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 4.4, 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.
4.4 Product's Average Ease Score
4.1 Category's Average Ease Score
Read more about our Reviewer Ease test.
Fail Word Count Comparison
- 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 1 group with a statistically significant greater concentration than what we'd expect to see:
Warn Deleted Reviews
We discovered a total of 178 deleted reviews for this product, with an average rating of 4.8. 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.
4.8 average rating of deleted reviews
Show distribution of deleted reviews
Warn Brand Repeats
102 of the 3,681 reviewers have reviewed multiple products but half or more of their reviews are for this brand. While this is more Brand Loyalists than we'd expect to see, it does not appear to have a significant impact on the overall rating.
Warn Suspicious Reviewers
528 of the 3,681 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.
Warn Reviewer Participation
- 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:
Pass Unverified Purchases
328 of the 3,681 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 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:
144 of the 3,681 total reviews for this product use substantial repetitive phrases between them. This is within an acceptable range and it does not appear to be significantly affecting the overall rating for this product.
Pass Overlapping Review History
Reviewers of this product have ALSO reviewed the following products:
43 of the 3,681 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 Incentivized Reviews
On Oct 3, 2016, Amazon prohibited incentivized reviews, however we still test for them since there are still millions in our dataset.
2 of the 3,681 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.