Browser Extensions 

Kinivo BTC450 Bluetooth Hands-Free Car Kit for Cars with Aux Input Jack (3.5 mm) - supports aptX From Kinivo Report Feedback

Pass Reviews appear natural

Original:

5,319 Reviews

Adjusted:

5,131 Reviews

88%
91%

View/Edit Adjustment
How is this calculated
Last Updated: 7/5/2017
Update Available
Advertisement (Support us to Hide Ads)

Report Card

Click a test to jump to details

FAIL Overlapping Review History
WARN Deleted Reviews
WARN Rating Trend
WARN Suspicious Reviewers
PASS Unverified Purchases
PASS Word Count Comparison
PASS Phrase Repetition
PASS Reviewer Participation
PASS Reviewer Ease
PASS Brand Repeats
PASS Skewed Helpfulness
PASS Incentivized Reviews
Advertisement (Support us to Hide Ads)

Most Trusted Reviews

Works great for hearing people but the mic does not ... [Go to full review]
Mar 26, 2017      
100% TRUST
  • Verified Purchaser
  • Take-Back Reviewer (1 deleted review; avg. rating: 5.0)
  • Critical Reviewer (avg. rating: 3.8)


Least Trusted Reviews

We couldn't find any low-quality reviews

Analysis Details


Fail Overlapping Review History

1% also reviewed:
Product Unavailable by

1% also reviewed:
ARRIS SURFboard DOCSIS by Arris

Does not include products
from the same brand


615 of the 5,319 reviewers have substantial overlapping product review history. These reviewers have rated this product an average of 4.6 while the reviewers who have a more unique product review history rated this product an average of 4.4. 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.

from reviewers with substantial overlapping history

from reviewers without a substantial overlapping history


4.6
4.4


Read more about our Overlapping Review History test.

Warn Deleted Reviews

We discovered a total of 19 deleted reviews for this product, with an average rating of 4.5. 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.

4.5 average rating of deleted reviews

4.5



Read more about our Deleted Reviews test.

Warn Rating Trend

  • 5%
  • Created over 22 days

We counted 5,319 reviews for this product over the span of 1,599 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 22 days exceeding this threshold:In total, we found that 289 reviews were created on just 22 days. 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.

from reviews created on high volume days

from reviews created on normal volume days


4.5
4.5


Read more about our Rating Trend test.

Warn Suspicious Reviewers

Take-Back Reviewers


461 of the 5,319 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.

from take-back reviewers

from reviewers without previously deleted reviews


4.5
4.5


Read more about our Suspicious Reviewers test.

Pass Unverified Purchases

171 of the 5,319 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.

from unverified purchasers

from verified purchases


4.2
4.5


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 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.

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:
191 reviews
(3.6%)
259 reviews
(4.9%)
112 reviews
(2.1%)
60 reviews
(1.1%)
123 reviews
(2.3%)
Show MoreShow Less
Common Phrases in Titles:
87 reviews
(1.6%)


130 of the 5,319 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.

from reviews with substantial repetitive phrases

from reviews without substantial repetitive phrases


4.4
4.5


Read more about our Phrase Repetition 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.

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 4.2, while the average ease score for reviewers in this category is 4.2.

4.2 Product's Average Ease Score

4.2 Category's Average Ease Score


4.2
4.2


Read more about our Reviewer Ease test.


Pass Brand Repeats

Brand Repeaters


84 of the 5,319 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.

from Brand Repeaters

from Non-Repeaters


4.5
4.5


Read more about our Brand Repeats test.

Pass Skewed Helpfulness
We examined the average net helpfulness score of negative reviews against the average net helpfulness score of positive reviews. The net helpfulness score is the number of times a review has been marked as helpful minus the number of times a review has been marked as unhelpful. We could not find any statistically significant difference in average net helpfulness score between the negative reviews and positive reviews.

0.1 average net helpfulness for positive reviews

-0.1 average net helpfulness for negative reviews


Read more about our Skewed Helpfulness test.


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.


1 of the 5,319 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.

from incentivized reviews

from non-incentivized reviews


5.0
4.5


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.