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Ultrasonic Pest Repeller,Set of 6-Packs,New Pest Control Electronic Plug in Repellent Indoor for...
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From Burlway
This report was last updated 10/21/2019.
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Report Info:
Note: We only analyze "reviews" and ignore one-tap "ratings".
Report Card
Fail Overall Grade
FAIL 
Word Count Comparison
Word Count ComparisonFAIL Reviewer Participation
Reviewer ParticipationWARN Rating Trend
Rating TrendWARN Brand Repeats
Brand RepeatsWARN Reviewer Ease
Reviewer EaseWARN Phrase Repetition
Phrase RepetitionWARN Overlapping Review History
Overlapping Review HistoryPASS Unverified Purchases
Unverified PurchasesPASS Suspicious Reviewers
Suspicious ReviewersPASS Incentivized Reviews
Incentivized ReviewsPASS Deleted Reviews
Deleted Reviews
Most Trusted Reviews
They don’t work for mice or anything else. I’ve watched ... [Go to full review]
Oct 19, 2019
100%
TRUST
TRUST
-
Verified Purchaser
-
Take-Back Reviewer (1 deleted Review; avg. rating: 5.0) -
Critical Reviewer (avg. rating: 3.5)
Least Trusted Reviews
I'm out of breath! Never ending twist and turns ........A ... [Go to full review]
Mar 12, 2013
0%
TRUST
TRUST
-
Unverified Purchaser -
Created on a high volume day -
Overrepresented word count (23 words) -
Contains repetitive phrases (
show)
-
Brand Repeater (2 of 5 reviews for this brand; avg rating: 4.5) -
Overlapping Review History: reviewed 1 of 9 top products -
Overrepresented Participation (posted 5 Reviews) -
Easy Grader (avg. rating: 4.8)
Analysis Details
Fail Word Count Comparison
Word Count Comparison
-
- 47%
- 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 2 groups with a statistically significant greater concentration than what we'd expect to see:In total, we found that 412 reviews (or 47%) are within an overrepresented word count group. These reviews have rated this product an average of 4.9, while all other reviews have rated this product an average of 4.6. 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.
Fail Reviewer Participation
Reviewer Participation
-
- 55%
- 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 482 reviewers (or 55%) are within an overrepresented participation group. These reviews have rated this product an average of 4.8, while all other reviews have rated this product an average of 4.6. 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.
Warn Rating Trend
Rating Trend
-
- 36%
- Created over 36 days
We counted 875 reviews for this product over the span of 2,439 days, an average of 0.4 reviews per day. If these reviews were created randomly, there would be a 99.9% chance that we would see 4 or fewer reviews on any given day.
However, we see the following 36 days exceeding this threshold:In total, we found that 319 reviews were created on just 36 days. This is an excessively high number of reviews submitted on these high volume days.
Warn Brand Repeats
Brand Repeats
Brand Repeaters
326 of the 875 reviewers have reviewed other products for this brand. While this is more Brand Repeaters than we'd expect to see, it does not appear to have a significant impact on the overall rating.
Warn Reviewer Ease
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 4.5, while the average ease score for reviewers in this category is 4.3. While this discrepancy is rather large, it is not quite large enough to rule out the possibility of it being due random chance.
4.5 Product's Average Ease Score
4.3 Category's Average Ease Score
Read more about our Reviewer Ease test.
Warn Phrase Repetition
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
40 reviews
(4.9/5)
(4.9/5)
12 reviews
(4.8/5)
(4.8/5)
107 reviews
(4.6/5)
(4.6/5)
108 reviews
(4.6/5)
(4.6/5)
121 reviews
(4.7/5)
(4.7/5)
12 reviews
(5.0/5)
(5.0/5)
12 reviews
(4.8/5)
(4.8/5)
109 reviews
(4.6/5)
(4.6/5)
85 reviews
(4.6/5)
(4.6/5)
55 reviews
(4.6/5)
(4.6/5)
Common Phrases in Titles:
56 reviews
(4.8/5)
(4.8/5)
37 reviews
(4.8/5)
(4.8/5)
36 reviews
(4.8/5)
(4.8/5)
367 of the 875 total reviews for this product use substantial repetitive phrases between them. This is an excessively large percentage which may indicate unnatural reviews.
Warn Overlapping Review History
Overlapping Review History
Reviewers of this product have ALSO reviewed the following products:
37% also reviewed:
Bloodlines by Razorbill
25% also reviewed:
The Golden Lily: A Bloodlines Novel by Richelle Mead
22% also reviewed:
The Fiery Heart: A Bloodlines Novel by Razorbill
17% also reviewed:
Insurgent: Divergent, Book 2 by Veronica Roth
12% also reviewed:
The Ruby Circle: A Bloodlines Novel by Richelle Mead
11% also reviewed:
The Hunger Games (Hunger Games Trilogy, Book 1) by Suzanne Collins
8% also reviewed:
Shatter Me by Tahereh Mafi
8% also reviewed:
Clockwork Princess (The Infernal Devices Book 3) by Cassandra Clare
8% also reviewed:
Heir of Fire (Throne of Glass series Book 3) by Sarah J. Maas
464 of the 875 reviewers have substantial overlapping product review history. While this is more than we'd expect to see, it does not appear to have a significant impact on the overall rating.
Pass Unverified Purchases
Unverified Purchases
222 of the 875 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.
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 Suspicious Reviewers
Suspicious Reviewers
One-Hit Wonders
55 of the 875 reviewers have only reviewed this product. This is within an acceptable range and it does not appear to be significantly affecting the overall rating for this product.
Never-Verified Reviewers
31 of the 875 reviewers have never written a verified purchase review. This is within an acceptable range and it does not appear to be significantly affecting the overall rating for this product.
Take-Back Reviewers
195 of the 875 reviewers have had at least one of their past reviews for another product deleted. This is within an acceptable range and it does not appear to be significantly affecting the overall rating for this product.
Single-Day Reviewers
12 of the 875 reviewers have written multiple reviews but posted all of them on a single day. This is within an acceptable range and it does not appear to be significantly affecting the overall rating for this product.
Pass Incentivized Reviews
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 875 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.
Read more about our Incentivized Reviews test. Check out our study showing that Incentivized Reviewers are much more likely to leave a positive review.
Pass Deleted Reviews
Deleted Reviews
- 0
- Reviews have been deleted
We have not discovered any deleted reviews for this product.
There are a few limitations to keep in mind regarding the Deleted Reviews test:
There are a few limitations to keep in mind regarding the Deleted Reviews test:
- 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.
- We have no information on reviews that were never published in the first place.
- 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.