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LED Alcohol Tester Professional Breathalyser with Fuel Cell Sensor and an LCD display with...
More product info From Topop

Amazon Reviews for  LED Alcohol Tester Professional Breathalyser with Fuel Cell Sensor and an LCD display with 4 Mouthpieces - Powered by 750 mAh Battery for Driver
Rating:
28 Ratings
28 Reviews
("Ratings" vs. "Reviews")
100% of potentially unnatural reviews removed (why?)
Adjusted:
Insufficient trustworthy reviews



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Report Info:
1

Report Card

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

Most Trusted Reviews

We couldn't find any quality reviews

Least Trusted Reviews

I am guilty of drinking and driving, I do like ... [Go to full review]
Jun 15, 2016      
0% TRUST
  • Unverified Purchaser
  • Created on a high volume day
  • Admitted to receiving an incentive
  • Contains repetitive phrases (show)
  • Take-Back Reviewer (257 deleted Reviews; avg. rating: 5.0)
  • Brand Repeater (4 of 360 reviews for this brand; avg rating: 4.5)
  • Overlapping Review History: reviewed 3 of 9 top products
  • Easy Grader (avg. rating: 5.0)


Analysis Details

Fail Brand Repeats

Brand Repeaters


25 of the 28 reviewers have reviewed other products for this brand. This is an excessively large percentage of Brand Repeaters which may indicate unnatural reviews.

from Brand Repeaters

from Non-Repeaters


4.9
5.0


Brand Loyalists


1 of the 28 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, the discrepancy in ratings between the Brand Loyalists and non-loyalists isn't significant enough to rule out the possibility of it being due to random chance.

from Brand Loyalists

from Non-Loyalists


5.0
4.9


Read more about our Brand Repeats test.

Fail Suspicious Reviewers

Take-Back Reviewers


21 of the 28 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


4.9
5.0


Read more about our Suspicious Reviewers test.

Fail 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 4.8, while the average ease score for reviewers in this category is 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.

4.8 Product's Average Ease Score

4.4 Category's Average Ease Score


4.8
4.4


Read more about our Reviewer Ease test.


Warn 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.

There are a few limitations to keep in mind regarding the Deleted Reviews test:
  1. We don't have a magic ability to collect every single deleted review; we can only identify reviews as deleted if we collect them on one date and then notice they are no longer visible on a subsequent date.
  2. We have no information on reviews that were never published in the first place.
  3. We also don't know why these reviews were removed. It could be action from the platform, personal decision by the review author, part of an entire account closure, even some data error on our part, etc.
Read more about our Deleted Reviews test.

4.0 average rating of deleted reviews

4.0


Show distribution of deleted reviews

Warn Rating Trend

  • 21%
  • Created over 1 day

We counted 28 reviews for this product over the span of 101 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 6 reviews were created on just 1 day. This is an excessively high number of reviews submitted on these high volume days.

from reviews created on high volume days

from reviews created on normal volume days


5.0
4.9


Read more about our Rating Trend test.

Warn Unverified Purchases

27 of the 28 total reviews for this product are unverified purchases. This is an excessively large percentage of unverified purchases and it may indicate unnatural reviews.

from unverified purchasers

from verified purchases


4.9
5.0


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 Incentivized Reviews
On Oct 3, 2016, Amazon prohibited incentivized reviews, however we still test for them since there are still millions in our dataset.


8 of the 28 total reviews for this product admitted to receiving a free or discounted product in exchange for a review. This is an excessively large percentage of incentivized reviews which may indicate unnatural reviews.

from incentivized reviews

from non-incentivized reviews


5.0
4.9


Read more about our Incentivized Reviews test. Check out our study showing that Incentivized Reviewers are much more likely to leave a positive review.

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:
Show MoreShow Less


20 of the 28 total reviews for this product use substantial repetitive phrases between them. This is an excessively large percentage which may indicate unnatural reviews.

from reviews with substantial repetitive phrases

from reviews without substantial repetitive phrases


5.0
4.9


Read more about our Phrase Repetition test.

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

68% also reviewed:
Mpow by Mpow

Does not include products
from the same brand


20 of the 28 reviewers have substantial overlapping product review history. While this is more than we'd expect to see, the discrepancy in ratings between these reviewers and reviewers who have a more unique product review history isn't significant enough to rule out the possibility of it being due to random chance.

from reviewers with substantial overlapping history

from reviewers without a substantial overlapping history


5.0
4.9


Read more about our Overlapping Review History 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 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.