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Raspberry Pi Gehäuse (OneNineDesign) für Raspberry Pi 3, Pi 2 und Raspberry Pi Model B+,... From Raspberry Pi Report Feedback

Warn Unnatural reviews possible

Original:

343 Reviews

Adjusted:

212 Reviews

Rank in: PC-Komponenten
12%
15%

View/Edit Adjustment
How is this calculated
Last Updated: 3/17/2017
Update Available
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Report Card

Click a test to jump to details

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

Most Trusted Reviews

Nachdem mein erstes Case ein totaler Reinfall war (http://www.amazon.de/Exclusives-Rydges%C2%AE-Raspberry-durchsichtiges-Plexiglas/dp/B00M3A7KD0/ref=sr_1_3?ie=UTF8&qid=1414774054&sr=8-3&keywords=raspberry+pi+b%2B+geh%C3%A4use), ist ... [Go to full review]
Oct 31, 2014      
100% TRUST
  • Verified Purchaser
  • Easy Grader (avg. rating: 4.5)


Least Trusted Reviews

Der erste eindruck war gut, elegantes simples Design, gefällt mir... ... [Go to full review]
Nov 13, 2015      
0% TRUST
  • Verified Purchaser
  • Contains repetitive phrases (show)
  • One-Hit Wonder
  • Critical Reviewer (avg. rating: 4.0)


Analysis Details

Note: While Amazon.de claims 343 reviews, we counted 327 available on their site.

Fail Suspicious Reviewers

One-Hit Wonders


41 of the 327 reviewers have only reviewed this product. The One-Hit Wonders have rated this product an average of 3.2 while the reviewers who have posted more than one review have rated this product an average of 4.1. 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 one-hit wonders

from reviewers with more than one review


3.2
4.1


Never-Verified Reviewers


3 of the 327 reviewers have never written a verified purchase review. The Never-Verified Reviewers have rated this product an average of 2.3 while the reviewers who have written at least one verified purchase review rated this product an average of 4.0. 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 never-verified reviewers

from reviewers with at least one verified purchase review


2.3
4.0


Take-Back Reviewers


10 of the 327 reviewers have had at least one of their past reviews for another product deleted. While this is more Take-Back Reviewers than we'd expect to see, the discrepancy in ratings between the Take-Back Reviewers and reviewers who don't have any deleted reviews in their history isn't significant enough to rule out the possibility of it being due to random chance.

from take-back reviewers

from reviewers without previously deleted reviews


4.0
3.9


Read more about our Suspicious Reviewers test.

Fail Overlapping Review History
Does not include products
from the same brand


73 of the 327 reviewers have substantial overlapping product review history. These reviewers have rated this product an average of 4.4 while the reviewers who have a more unique product review history rated this product an average of 3.8. 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


4.4
3.8


Read more about our Overlapping Review History test.

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:
10 reviews
(3.1%)
131 reviews
(40.1%)
20 reviews
(6.1%)
39 reviews
(11.9%)
4 reviews
(1.2%)
24 reviews
(7.3%)
47 reviews
(14.4%)
4 reviews
(1.2%)
Show MoreShow Less
Common Phrases in Titles:
8 reviews
(2.4%)
5 reviews
(1.5%)
18 reviews
(5.5%)
11 reviews
(3.4%)
11 reviews
(3.4%)
5 reviews
(1.5%)
3 reviews
(0.9%)
14 reviews
(4.3%)
16 reviews
(4.9%)
10 reviews
(3.1%)
Show MoreShow Less


266 of the 327 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


3.9
4.1


Read more about our Phrase Repetition test.

Warn Reviewer Participation

  • 59%
  • From reviewers with an overrepresented participation

We see the following 1 participation group with a statistically significant greater concentration than what we'd expect to see:In total, we found that 192 reviewers (or 59%) 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


4.1
3.8


Read more about our Reviewer Participation test.

Pass Rating Trend

  • 0%
  • Created on high-volume days
We counted 327 reviews for this product over the span of 798 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. We didn't find any days exceeding this threshold.
Read more about our Rating Trend test.

Pass Unverified Purchases

8 of the 327 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


3.5
4.0


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.

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 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 3.9, while the average ease score for reviewers in this category is 4.3.

3.9 Product's Average Ease Score

4.3 Category's Average Ease Score


3.9
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.

0.0 average net helpfulness for positive reviews

0.0 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.