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ivolks Bluetooth Headphones V4.1 Wireless Sport Headphones Stereo In-Ear Noise Cancelling... From IVOLKS Report Feedback

Pass Reviews appear natural

Original:

5 Reviews

Adjusted:

4 Reviews

Rank in: Headphones
55%
62%

View/Edit Adjustment
How is this calculated
Report Last Updated: Feb 18, 2018
Update Available
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Report Card

Click a test to jump to details

FAIL Deleted Reviews
FAIL Suspicious Reviewers
WARN Incentivized Reviews
WARN Reviewer Ease
PASS Rating Trend
PASS Unverified Purchases
PASS Word Count Comparison
PASS Phrase Repetition
PASS Overlapping Review History
PASS Reviewer Participation
PASS Brand Repeats
PASS Skewed Helpfulness
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Most Trusted Reviews

First I want to clarify that this product was sent ... [Go to full review]
May 31, 2016     1 of 1 found this helpful.  
100% TRUST
  • Unverified Purchaser
  • Take-Back Reviewer (23 deleted reviews; avg. rating: 5.0)
  • Easy Grader (avg. rating: 4.9)


Least Trusted Reviews

We couldn't find any low-quality reviews

Analysis Details


Fail 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.

4.0 average rating of deleted reviews

4.0



Read more about our Deleted Reviews test.

Fail Suspicious Reviewers

Take-Back Reviewers


2 of the 5 reviewers have had at least one of their past reviews for another product deleted. This is an excessively large percentage of Take-Back Reviewers which may indicate unnatural reviews.

from take-back reviewers

from reviewers without previously deleted reviews


4.5
3.7


Single-Day Reviewers


1 of the 5 reviewers has written multiple reviews but posted all of them on a single day. While this is more Single-Day Reviewers than we'd expect to see, the discrepancy in ratings between the Single-Day Reviewers and all other reviewers isn't significant enough to rule out the possibility of it being due to random chance.

from single-day reviewers

from non-single-day reviewers


5.0
3.8


Read more about our Suspicious Reviewers test.

Warn 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 total reviews for this product admitted to receiving a free or discounted product in exchange for a review. While we could not find a statistically significant difference between the average rating of incentivized reviews and non-incentivized reviews, the presences of at least one incentivized review indicates that there may be more, since not all reviewers will disclose that they had received an incentive to post a review.

from incentivized reviews

from non-incentivized reviews


5.0
3.8


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.

Warn 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 4.1. While this discrepancy is rather large, it is not quite large enough to rule out the possibility of it being due random chance.

4.6 Product's Average Ease Score

4.1 Category's Average Ease Score


4.6
4.1


Read more about our Reviewer Ease test.


Pass Rating Trend

  • 0%
  • Created on high-volume days
We counted 5 reviews for this product over the span of 185 days, an average of 0.0 reviews per day. If these reviews were created randomly, there would be a 99.9% chance that we would see 1 or fewer reviews on any given day. We didn't find any days exceeding this threshold.
Read more about our Rating Trend test.

Pass Unverified Purchases

2 of the 5 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


4.5
3.7


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
  • 0%
  • Used substantial repetitive phrases
0 of the 5 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.
Read more about our Phrase Repetition test.

Pass Overlapping Review History
  • 0%
  • Substantial overlapping review history
0 of the 5 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.
Read more about our Overlapping Review History 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 Brand Repeats

Brand Repeaters

We didn't detect a substantial amount of Brand Repeaters.

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.

1.0 average net helpfulness for positive reviews

0.0 average net helpfulness for negative reviews


Read more about our Skewed Helpfulness test.