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TV Antenna, Vansky Amplified HDTV Antenna 50 Mile Range with Detachable Amplifier Signal Booster... From Vansky Report Feedback

Warn Unnatural reviews possible*

Original:

277 Reviews

Adjusted:

205 Reviews

Rank in: TV Antennas
48%
50%

How is this calculated
Report Last Updated: Feb 2, 2018
Update Available

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Report Card

Click a test to jump to details

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

There was a recent article in Consumer Reports discussing antennas ... [Go to full review]
Aug 16, 2017      
100% TRUST
  • Verified Purchaser
  • Easy Grader (avg. rating: 4.1)


Least Trusted Reviews

Works great pulling in local broadcast stations. I put it ... [Go to full review]
Jul 31, 2017      
0% TRUST
  • Unverified Purchaser
  • Overlapping Review History: reviewed 1 of 9 top products
  • Easy Grader (avg. rating: 4.4)


Analysis Details


Fail Unverified Purchases

73 of the 277 total reviews for this product are unverified purchases. The unverified purchasers have rated this product an average of 4.7 while the verified purchasers have rated this product an average of 3.9. 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 unverified purchasers

from verified purchases


4.7
3.9


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.

Warn Suspicious Reviewers

One-Hit Wonders


Approximately 15% of 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.

from one-hit wonders

from reviewers with more than one review


3.8
4.0


Take-Back Reviewers


Less than approximately 10% of 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


4.0
4.0


Read more about our Suspicious Reviewers test.

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 4.3, 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.

4.3 Product's Average Ease Score

4.1 Category's Average Ease Score


4.3
4.1


Read more about our Reviewer Ease test.


Warn Word Count Comparison

  • ~40%
  • 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 approximately 40% are within an overrepresented word count group. While this is more reviews from overrepresented word count groups than we'd expect to see, these reviews do not appear to have a significant impact on the overall rating.

from reviews with an overrepresented word count

from reviews with a properly represented word count


3.9
4.1


Read more about our Word Count Comparison test.

Pass Rating Trend
  • <10%
  • Created on high-volume days
We didn't notice any signals that would indicate reviews were created unevenly over time.
Read more about our Rating Trend 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:
~7% of reviews
Common Phrases in Titles:
~4% of reviews


Less than approximately 10% of reviews 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


5.0
4.0


Read more about our Phrase Repetition test.

Pass Overlapping Review History
Reviewers of this product have ALSO reviewed the following products:

<10% also reviewed:
Amazon Video by Amazon.com

<10% also reviewed:
ACEE DEAL MP3/MP4 Player by ACEE DEAL

Does not include products
from the same brand


Approximately 20% of 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


4.2
3.9


Read more about our Overlapping Review History test.

Pass Brand Repeats

Brand Repeaters

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

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.

  • <10%
  • Admitted to receiving an incentive
We didn't detect any reviews that used language indicating they were incentivized.
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.

Pass Deleted Reviews
  • 0
  • Reviews have been deleted
We have not discovered any deleted reviews for this product.
Read more about our Deleted Reviews test.

N/A Reviewer Participation
We haven't collected sufficient data to run this test yet. See more


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