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Portable Electric Clothes Remover Fabrics Lint Pill Fluff Sweater Fuzz Shaver 02 From KeyZone Report Feedback

Warn Unnatural reviews possible

Original:

236 Reviews

Adjusted:

161 Reviews

Rank in: Lint Removal
5%
5%

View/Edit Adjustment
How is this calculated
Last Updated: 5/19/2017
Update Available
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Report Card

Click a test to jump to details

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

Most Trusted Reviews

Works well, took about 3 weeks to get it on ... [Go to full review]
Feb 6, 2015      
100% TRUST
  • Verified Purchaser
  • Easy Grader (avg. rating: 5.0)


Least Trusted Reviews

It took a long time to receive this item. It ... [Go to full review]
Mar 2, 2015      
0% TRUST
  • Verified Purchaser
  • Created on a high volume day
  • Overrepresented word count (12 words)
  • Contains repetitive phrases (show)
  • Take-Back Reviewer (1 deleted review; avg. rating: 1.0)
  • Overrepresented Participation (posted 13 reviews)
  • Easy Grader (avg. rating: 4.4)


Analysis Details


Fail Rating Trend

  • 10%
  • Created over 5 days

We counted 236 reviews for this product over the span of 844 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 5 days exceeding this threshold:In total, we found that 24 reviews were created on just 5 days. The reviews on these high volume days have rated this product an average of 2.7 while reviews from other days have rated this product an average of 3.5. 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


2.7
3.5


Read more about our Rating Trend test.

Fail Suspicious Reviewers

Take-Back Reviewers


25 of the 236 reviewers have had at least one of their past reviews for another product deleted. The Take-Back Reviewers have rated this product an average of 4.0 while the reviewers who don't have any deleted reviews in their history have rated this product an average of 3.4. 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.

from take-back reviewers

from reviewers without previously deleted reviews


4.0
3.4


Read more about our Suspicious Reviewers test.

Fail Word Count Comparison

  • 52%
  • 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 123 reviews (or 52%) are within an overrepresented word count group. These reviews have rated this product an average of 3.6, while all other reviews have rated this product an average of 3.2. 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 an overrepresented word count

from reviews with a properly represented word count


3.6
3.2


Read more about our Word Count Comparison test.

Warn Reviewer Participation

  • 83%
  • 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 196 reviewers (or 83%) 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


3.4
3.8


Read more about our Reviewer Participation test.

Pass Unverified Purchases

3 of the 236 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


3.0
3.5


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 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
(1.7%)
3 reviews
(1.3%)
3 reviews
(1.3%)
3 reviews
(1.3%)
4 reviews
(1.7%)
2 reviews
(0.8%)
2 reviews
(0.8%)
4 reviews
(1.7%)
Show MoreShow Less
Common Phrases in Titles:
4 reviews
(1.7%)
2 reviews
(0.8%)
2 reviews
(0.8%)
5 reviews
(2.1%)
5 reviews
(2.1%)
Show MoreShow Less


17 of the 236 total reviews for this product 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


3.8
3.4


Read more about our Phrase Repetition test.

Pass Overlapping Review History

1% also reviewed:
Minions by Brian Lynch

Does not include products
from the same brand


17 of the 236 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


4.1
3.4


Read more about our Overlapping Review History 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 4.3.

4.1 Product's Average Ease Score

4.3 Category's Average Ease Score


4.1
4.3


Read more about our Reviewer Ease test.


Pass Brand Repeats

Brand Repeaters

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

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.

1.1 average net helpfulness for positive reviews

0.2 average net helpfulness for negative reviews


Read more about our Skewed Helpfulness 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.

  • 0%
  • 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.