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Vansky® Bias Lighting for HDTV USB LED Strip Normal Bright White Backlight Kit for Flat Screen TV... From Vansky Report Feedback

Pass Reviews appear natural

Original:

96 Reviews

Adjusted:

86 Reviews

Rank in: Accessories
74%
77%

View/Edit Adjustment
How is this calculated
Report Last Updated: Mar 11, 2017
Update Available
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Report Card

Click a test to jump to details

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

Works as described. I had to use 2 strips to ... [Go to full review]
Oct 29, 2016      
100% TRUST
  • Verified Purchaser
  • One-Hit Wonder
  • Critical Reviewer (avg. rating: 4.0)


Least Trusted Reviews

Great quality and I absolutely love it and its perfect ... [Go to full review]
Feb 25, 2016      
12% TRUST
  • Unverified Purchaser
  • Contains repetitive phrases (show)
  • Never-Verified Reviewer
  • Brand Monogamist (2 of 2 reviews for this brand; avg rating: 5.0)
  • Easy Grader (avg. rating: 5.0)


Analysis Details


Fail Deleted Reviews

We discovered a total of 14 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.

4.8 average rating of deleted reviews

4.8



Read more about our Deleted Reviews test.

Fail Rating Trend

  • 5%
  • Created over 1 day

We counted 96 reviews for this product over the span of 374 days, an average of 0.3 reviews per day. If these reviews were created randomly, there would be a 99.9% chance that we would see 3 or fewer reviews on any given day.

However, we see the following 1 day exceeding this threshold:In total, we found that 5 reviews were created on just 1 day. The reviews on these high volume days have rated this product an average of 3.4 while reviews from other days have rated this product an average of 4.5. 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.

from reviews created on high volume days

from reviews created on normal volume days


3.4
4.5


Read more about our Rating Trend test.

Fail Suspicious Reviewers

Take-Back Reviewers


12 of the 96 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


4.8
4.4


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.


5 of the 96 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


4.8
4.4


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 Brand Repeats

Brand Loyalists


3 of the 96 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.

from Brand Loyalists

from Non-Loyalists


4.0
4.5


Read more about our Brand Repeats test.

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:
4 reviews
(4.2%)
3 reviews
(3.1%)
3 reviews
(3.1%)
4 reviews
(4.2%)
6 reviews
(6.3%)
2 reviews
(2.1%)
2 reviews
(2.1%)
3 reviews
(3.1%)
3 reviews
(3.1%)
3 reviews
(3.1%)
Show MoreShow Less
Common Phrases in Titles:
2 reviews
(2.1%)
3 reviews
(3.1%)
2 reviews
(2.1%)
4 reviews
(4.2%)
Show MoreShow Less


19 of the 96 total reviews for this product use substantial repetitive phrases between them. While this is more than we'd expect to see, the discrepancy in ratings between the these reviews and reviews without substantial repetitive phrases isn't significant enough to rule out the possibility of it being due to random chance.

from reviews with substantial repetitive phrases

from reviews without substantial repetitive phrases


4.7
4.4


Read more about our Phrase Repetition test.

Pass Unverified Purchases

17 of the 96 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


4.7
4.4


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 Overlapping Review History
Does not include products
from the same brand


17 of the 96 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.

from reviewers with substantial overlapping history

from reviewers without a substantial overlapping history


4.4
4.5


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 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


4.3
4.3


Read more about our Reviewer Ease 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.

0.2 average net helpfulness for positive reviews

-0.1 average net helpfulness for negative reviews


Read more about our Skewed Helpfulness test.