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mumbi UltraSlim Hülle für Samsung Galaxy S7 Schutzhülle transparent (Ultra Slim - 0.80 mm)
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This report was last updated 3/8/2019.
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Report Info:
Note: While Amazon.de claims 897 Ratings, we counted 903 Reviews available on their site.
Note: We only analyze "reviews" and ignore one-tap "ratings".
Note: We only analyze "reviews" and ignore one-tap "ratings".
Report Card
Fail Overall Grade
FAIL Unverified Purchases
FAIL Suspicious Reviewers
FAIL Phrase Repetition
FAIL Overlapping Review History
WARN Deleted Reviews
WARN Brand Repeats
WARN Reviewer Ease
WARN Word Count Comparison
WARN Reviewer Participation
PASS Rating Trend
PASS Incentivized Reviews
Most Trusted Reviews
Update: Habe von. Mumbi Ersatz erhalten. Ein paar Monate und ... [Go to full review]
Sep 7, 2017
100%
TRUST
TRUST
- Verified Purchaser
- Brand Repeater (2 of 16 reviews for this brand; avg rating: 2.5)
- Critical Reviewer (avg. rating: 3.1)
Least Trusted Reviews
Die Hülle passt genau auf ein Samsung S7Das Produkt sieht ... [Go to full review]
Dec 23, 2017
0%
TRUST
TRUST
- Unverified Purchaser
- Overrepresented word count (39 words)
- Contains repetitive phrases (show)
- Take-Back Reviewer (44 deleted Reviews; avg. rating: 4.9)
- Overrepresented Participation (posted 93 Reviews)
- Easy Grader (avg. rating: 4.8)
Analysis Details
Fail Unverified Purchases
124 of the 903 total reviews for this product are unverified purchases. The unverified purchasers have rated this product an average of 4.6 while the verified purchasers 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.
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.
Fail Suspicious Reviewers
One-Hit Wonders
165 of the 903 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.
Never-Verified Reviewers
40 of the 903 reviewers have never written a verified purchase review. The Never-Verified Reviewers have rated this product an average of 4.6 while the reviewers who have written at least one verified purchase review 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.
Take-Back Reviewers
142 of the 903 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 4.3 while the reviewers who don't have any deleted reviews in their history 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.
Single-Day Reviewers
45 of the 903 reviewers have written multiple reviews but posted all of them on a single day. The Single-Day reviewers have rated this product an average of 4.5 while all other reviewers 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.
Fail 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
34 reviews
(4.6/5)
(4.6/5)
20 reviews
(4.9/5)
(4.9/5)
279 reviews
(4.1/5)
(4.1/5)
128 reviews
(4.7/5)
(4.7/5)
54 reviews
(4.4/5)
(4.4/5)
13 reviews
(3.9/5)
(3.9/5)
8 reviews
(4.1/5)
(4.1/5)
47 reviews
(4.5/5)
(4.5/5)
45 reviews
(3.5/5)
(3.5/5)
12 reviews
(3.8/5)
(3.8/5)
541 of the 903 total reviews for this product use substantial repetitive phrases between them. These reviewers have rated this product an average of 4.3 while reviews without substantial repetitive phrases 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.
Fail Overlapping Review History
Reviewers of this product have ALSO reviewed the following products:
4% also reviewed:
Galaxy S7 Schutzfolie [3 Stück ] [Vollständige... by YOOTECH
2% also reviewed:
Samsung Galaxy S7 Smartphone (5,1 Zoll (12,9 cm),... by Samsung
2% also reviewed:
SanDisk Ultra Android microSDXC 128GB bis zu... by SanDisk
2% also reviewed:
NAVIGON Europe by Garmin Wuerzburg GmbH
1% also reviewed:
PhoneNatic 2 x Glas-Folie klar für Samsung... by PhoneNatic
1% also reviewed:
Galaxy S7 edge Schutzfolie, Yootech[Anti-Lifting]... by YOOTECH
1% also reviewed:
Remington Barttrimmer Herren Set MB320C... by Remington
Does not include products
from the same brand
from the same brand
127 of the 903 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 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.
Warn Deleted Reviews
We discovered a total of 44 deleted Reviews for this product, with an average rating of 4.6. 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.
Warn Brand Repeats
Brand Loyalists
27 of the 903 reviewers have reviewed multiple products but half or more of their reviews are for this brand. While this is more Brand Loyalists than we'd expect to see, the discrepancy in ratings between the Brand Loyalists and non-loyalists isn't significant enough to rule out the possibility of it being due to random chance.
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 4.1, while the average ease score for reviewers in this category is 3.8. While this discrepancy is rather large, it is not quite large enough to rule out the possibility of it being due random chance.
4.1 Product's Average Ease Score
3.8 Category's Average Ease Score
Read more about our Reviewer Ease test.
Warn Word Count Comparison
-
- 34%
- 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 1 group with a statistically significant greater concentration than what we'd expect to see:In total, we found that 306 reviews (or 34%) are within an overrepresented word count group. While this is more reviews from overrepresented word count groups than we'd expect to see, these reviews do not appear to have a significant impact on the overall rating.
Warn Reviewer Participation
-
- 50%
- 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 452 reviewers (or 50%) are within an overrepresented participation group. This is an excessively high number of reviewers in overrepresented participation groups.
Pass Rating Trend
-
- 3%
- Created over 4 days
We counted 903 reviews for this product over the span of 1,086 days, an average of 0.8 reviews per day. If these reviews were created randomly, there would be a 99.9% chance that we would see 5 or fewer reviews on any given day.
However, we see the following 4 days exceeding this threshold:In total, we found that 24 reviews were created on just 4 days. 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.
1 of the 903 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.