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Anker PowerCore+ mini 3350mAh Lipstick-Sized Portable Charger (3rd Generation, Premium Aluminum... From Anker Report Feedback

Pass Reviews appear natural

Original:

26,435 Reviews

Adjusted:

21,837 Reviews

72%
75%

View/Edit Adjustment
How is this calculated
Report Last Updated: Jul 10, 2018
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Update Available
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Report Card

Click a test to jump to details

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

Another bad anker product. I dont know why I keep ... [Go to full review]
Jul 3, 2015     5 of 2 found this helpful.  
50% TRUST
  • Verified Purchaser
  • Take-Back Reviewer (1 deleted review; avg. rating: 1.0)
  • Brand Repeater (2 of 50 reviews for this brand; avg rating: 1.0)
  • Critical Reviewer (avg. rating: 2.3)


Least Trusted Reviews

This thing is awesome! Not only can I charge my ... [Go to full review]
Aug 3, 2015      
0% TRUST
  • Verified Purchaser
  • Created on a high volume day
  • One-Hit Wonder
  • Take-Back Reviewer (1 deleted review; avg. rating: 5.0)
  • Easy Grader (avg. rating: 5.0)


Analysis Details

Note: While Amazon claims 26,435 reviews, we counted 26,434 available on their site.

Fail Suspicious Reviewers

One-Hit Wonders


2,895 of the 26,434 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


4.1
4.5


Take-Back Reviewers


2,936 of the 26,434 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 4.6 while the reviewers who don't have any deleted reviews in their history have rated this product an average of 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.

from take-back reviewers

from reviewers without previously deleted reviews


4.6
4.4


Read more about our Suspicious Reviewers test.

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



1,206 of the 26,434 reviewers have substantial overlapping product review history. These reviewers have rated this product an average of 4.6 while the reviewers who have a more unique product review history rated this product an average of 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.

from reviewers with substantial overlapping history

from reviewers without a substantial overlapping history


4.6
4.4


Read more about our Overlapping Review History test.

Warn Deleted Reviews

We discovered a total of 913 deleted reviews for this product, with an average rating of 4.5. 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.

4.5 average rating of deleted reviews

4.5



Read more about our Deleted Reviews test.

Warn Rating Trend

  • 32%
  • Created over 279 days

We counted 26,434 reviews for this product over the span of 2,413 days, an average of 11.0 reviews per day. If these reviews were created randomly, there would be a 99.9% chance that we would see 23 or fewer reviews on any given day.

However, we see the following 279 days exceeding this threshold:In total, we found that 8,504 reviews were created on just 279 days. 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


4.5
4.4


Read more about our Rating Trend 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 4.2. 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

4.2 Category's Average Ease Score


4.3
4.2


Read more about our Reviewer Ease test.


Pass Unverified Purchases

1,206 of the 26,434 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


4.2
4.4


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 Phrase Repetition
  • 0%
  • Used substantial repetitive phrases
0 of the 26,434 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.
Read more about our Phrase Repetition 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.

Pass Brand Repeats

Brand Repeaters


4,395 of the 26,434 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


4.6
4.4


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.


13 of the 26,434 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


4.7
4.4


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.