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

Pass Reviews appear natural

Original:

2,958 Reviews

Adjusted:

2,496 Reviews

Rank in: Network Antennas
36%
42%

View/Edit Adjustment
How is this calculated
Report Last Updated: May 3, 2018
Update Available
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Report Card

Click a test to jump to details

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

4/5
I have a large aluminum YAGI antenna and so I ... [Go to full review]
Mar 8, 2018      
100% TRUST
  • Verified Purchaser
  • Easy Grader (avg. rating: 4.4)


Least Trusted Reviews

Great product! [Go to full review]
Aug 22, 2017      
0% TRUST
  • Verified Purchaser
  • Created on a high volume day
  • Overrepresented Participation (posted 9 reviews)
  • Critical Reviewer (avg. rating: 3.7)


Analysis Details


Fail Deleted Reviews

We discovered a total of 197 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

  • 4%
  • Created over 7 days

We counted 2,958 reviews for this product over the span of 665 days, an average of 4.4 reviews per day. If these reviews were created randomly, there would be a 99.9% chance that we would see 13 or fewer reviews on any given day.

However, we see the following 7 days exceeding this threshold:In total, we found that 113 reviews were created on just 7 days. The reviews on these high volume days have rated this product an average of 4.2 while reviews from other days 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 reviews created on high volume days

from reviews created on normal volume days


4.2
3.9


Read more about our Rating Trend test.

Fail Suspicious Reviewers

Take-Back Reviewers


143 of the 2,958 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


3.8
3.9


Single-Day Reviewers


116 of the 2,958 reviewers have written multiple reviews but posted all of them on a single day. The Single-Day reviewers have rated this product an average of 4.1 while all other reviewers 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 single-day reviewers

from non-single-day reviewers


4.1
3.9


Read more about our Suspicious Reviewers test.

Fail 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:
58 reviews


27 of the 2,958 total reviews for this product use substantial repetitive phrases between them. These reviewers have rated this product an average of 4.7 while reviews without substantial repetitive phrases 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 reviews with substantial repetitive phrases

from reviews without substantial repetitive phrases


4.7
3.9


Read more about our Phrase Repetition test.

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

Does not include products
from the same brand


222 of the 2,958 reviewers have substantial overlapping product review history. These reviewers have rated this product an average of 4.0 while the reviewers who have a more unique product review history 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 reviewers with substantial overlapping history

from reviewers without a substantial overlapping history


4.0
3.9


Read more about our Overlapping Review History test.

Warn Reviewer Participation

  • 75%
  • From reviewers with an overrepresented participation

We see the following 2 participation groups with a statistically significant greater concentration than what we'd expect to see:In total, we found that 2204 reviewers (or 75%) are within an overrepresented participation group. This is an excessively high number of reviewers in overrepresented participation groups.

From reviewers with an overrepresented participation

From reviewers with a properly represented participation


3.8
4.0


Read more about our Reviewer Participation test.

Pass Unverified Purchases

375 of the 2,958 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


3.8
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.

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 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 4.1, while the average ease score for reviewers in this category is 4.1.

4.1 Product's Average Ease Score

4.1 Category's Average Ease Score


4.1
4.1


Read more about our Reviewer Ease test.


Pass Brand Repeats

Brand Repeaters


28 of the 2,958 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


4.0
3.9


Read more about our Brand Repeats 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 2,958 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
3.9


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.