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1byone 10000mAh Externer Akku Ultra-Slim mit 2 USB Ports, Kompakte und Handliche Power Bank mit LCD...
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This report was last updated 11/4/2019.
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Report Card
Pass Overall Grade
FAIL Deleted Reviews
FAIL Overlapping Review History
WARN Rating Trend
WARN Phrase Repetition
PASS Unverified Purchases
PASS Word Count Comparison
PASS Suspicious Reviewers
PASS Reviewer Participation
PASS Reviewer Ease
PASS Brand Repeats
PASS Incentivized Reviews
Most Trusted Reviews
Great product, light and long lasting use. I used to ... [Go to full review]
Apr 13, 2017
100%
TRUST
TRUST
- Verified Purchaser
- Take-Back Reviewer (2 deleted Reviews; avg. rating: 4.0)
- Easy Grader (avg. rating: 4.6)
Least Trusted Reviews
Guten Tag, ich habe die Powerbank als Tester erhalten.Die Powerbank ... [Go to full review]
Sep 7, 2016
3%
TRUST
TRUST
- Unverified Purchaser
- Created on a high volume day
- Contains repetitive phrases (show)
- Take-Back Reviewer (76 deleted Reviews; avg. rating: 4.8)
- Brand Repeater (2 of 135 reviews for this brand; avg rating: 4.5)
- Overlapping Review History: reviewed 1 of 9 top products
- Easy Grader (avg. rating: 4.7)
Analysis Details
Fail Deleted Reviews
We discovered a total of 27 deleted Reviews for this product, with an average rating of 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.
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.
Fail Overlapping Review History
Reviewers of this product have ALSO reviewed the following products:
7% also reviewed:
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3% also reviewed:
Medela Calma BPA-freier Milchsauger mit 150 ml... by Medela
3% also reviewed:
Fire TV Stick mit Alexa-Sprachfernbedienung (1.... by Amazon
3% also reviewed:
Htechy Kompatible mit iPhone 7 Display Schwarz... by HTECHY Communication Technology
3% also reviewed:
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Does not include products
from the same brand
from the same brand
18 of the 120 reviewers have substantial overlapping product review history. These reviewers have rated this product an average of 4.8 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.
Warn Rating Trend
-
- 8%
- Created over 3 days
We counted 120 reviews for this product over the span of 1,065 days, an average of 0.1 reviews per day. If these reviews were created randomly, there would be a 99.9% chance that we would see 2 or fewer reviews on any given day.
However, we see the following 3 days exceeding this threshold:In total, we found that 10 reviews were created on just 3 days. Although any days with a larger number of reviews than expected is suspicious, the discrepancy in ratings from reviews created on these high volume days and reviews created on other days isn't significant enough to rule out the possibility of it being due to random chance.
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
4 reviews
(4.8/5)
(4.8/5)
4 reviews
(5.0/5)
(5.0/5)
6 reviews
(4.7/5)
(4.7/5)
5 reviews
(4.2/5)
(4.2/5)
4 reviews
(4.3/5)
(4.3/5)
3 reviews
(4.0/5)
(4.0/5)
2 reviews
(5.0/5)
(5.0/5)
4 reviews
(5.0/5)
(5.0/5)
4 reviews
(5.0/5)
(5.0/5)
2 reviews
(4.5/5)
(4.5/5)
54 of the 120 total reviews for this product use substantial repetitive phrases between them. This is an excessively large percentage which may indicate unnatural reviews.
Pass Unverified Purchases
27 of the 120 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 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.
Read more about our Word Count Comparison test.
Pass Suspicious Reviewers
One-Hit Wonders
6 of the 120 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
3 of the 120 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
29 of the 120 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
2 of the 120 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 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.
Read more about our Reviewer Participation 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 4.3, while the average ease score for reviewers in this category is 3.9. 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
3.9 Category's Average Ease Score
Read more about our Reviewer Ease test.
Pass Brand Repeats
Brand Repeaters
9 of the 120 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.
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. Check out our study showing that Incentivized Reviewers are much more likely to leave a positive review.
Read more about our Incentivized Reviews test. Check out our study showing that Incentivized Reviewers are much more likely to leave a positive review.