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Bluetooth Adapter, USB Bluetooth Device Adapter/Receiver CSR 4.0 Compatible with Tablet, PC, mouse,...
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This report was last updated 11/28/2016.
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Report Info:
Last Updated: Nov 28, 2016
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Note: While Amazon.co.uk claims 13 Ratings, we counted 28 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 Overlapping Review History
WARN Word Count Comparison
WARN Phrase Repetition
PASS Rating Trend
PASS Suspicious Reviewers
PASS Reviewer Participation
PASS Reviewer Ease
PASS Brand Repeats
PASS Deleted Reviews
Most Trusted Reviews
I bought this as a plug and play Bluetooth Device, ... [Go to full review]
Sep 24, 2016
100%
TRUST
TRUST
- Verified Purchaser
- One-Hit Wonder
- Critical Reviewer (avg. rating: 1.0)
Least Trusted Reviews
This USB Bluetooth adapter is tiny, my previous adapter was ... [Go to full review]
Mar 19, 2016
0%
TRUST
TRUST
- Unverified Purchaser
- Admitted to receiving an incentive
- Contains repetitive phrases (show)
- Take-Back Reviewer (45 deleted Reviews; avg. rating: 4.6)
- Overlapping Review History: reviewed 1 of 9 top products
- Easy Grader (avg. rating: 4.5)
Analysis Details
Fail Unverified Purchases
16 of the 28 total reviews for this product are unverified purchases. The unverified purchasers have rated this product an average of 4.9 while the verified purchasers have rated this product an average of 3.4. 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.
14 of the 28 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 4.9 while reviews that were not incentivized rated this product an average of 3.6. 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 Overlapping Review History
Reviewers of this product have ALSO reviewed the following products:
25% also reviewed:
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25% also reviewed:
Criacr 150ml Essential Oil Diffuser, Cool Mist... by Criacr
21% also reviewed:
Criacr 150ml Essential Oil Diffusers, Ultrasonic... by Criacr
18% also reviewed:
Zookki Accessories Bundle Kit for GoPro Hero 4 3+... by Zookki
18% also reviewed:
Fire TV Stick with Voice Remote | Streaming Media... by Amazon
18% also reviewed:
SoundPEATS M20 Headphones Earphones, with... by SoundPEATS
18% also reviewed:
Huawei P8 Lite case,Lizimandu TPU Case for Huawei... by Lizimandu
Does not include products
from the same brand
from the same brand
16 of the 28 reviewers have substantial overlapping product review history. These reviewers have rated this product an average of 4.7 while the reviewers who have a more unique product review history rated this product an average of 3.7. 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 Word Count Comparison
-
- 39%
- 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:In total, we found that 11 reviews (or 39%) are within an overrepresented word count group. While this is more reviews from overrepresented word count groups than we'd expect to see, the discrepancy in ratings between reviews with overrepresented word groups and all other reviews 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.
9 of the 28 total reviews for this product use substantial repetitive phrases between them. This is an excessively large percentage which may indicate unnatural reviews.
Pass Rating Trend
-
- 0%
- Created on high-volume days
We counted 28 reviews for this product over the span of 298 days, an average of 0.1 reviews per day. If these reviews were created randomly, there would be a 99.9% chance that we would see 2 or fewer reviews on any given day. We didn't find any days exceeding this threshold.
Read more about our Rating Trend test.
Read more about our Rating Trend test.
Pass Suspicious Reviewers
One-Hit Wonders
1 of the 28 reviewers have only reviewed this product. This is within an acceptable range and it does not appear to be significantly affecting the overall rating for this product.
Never-Verified Reviewers
1 of the 28 reviewers have never written a verified purchase review. This is within an acceptable range and it does not appear to be significantly affecting the overall rating for this product.
Take-Back Reviewers
We didn't detect a substantial amount of Take-Back Reviewers.
Single-Day Reviewers
We didn't detect a substantial amount of Single-Day Reviewers.
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 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 4.3, while the average ease score for reviewers in this category is 4.3.
4.3 Product's Average Ease Score
4.3 Category's Average Ease Score
Read more about our Reviewer Ease test.
Pass Brand Repeats
Brand Repeaters
1 of the 28 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.
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.