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Osram NIGHT BREAKER UNLIMITED H4, Halogen-Scheinwerferlampe, 64193NBU-HCB, 12V PKW, Duobox (2...
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From Osram
This report was last updated 5/30/2021.
Refresh the report to view the most up-to-date data available:
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Report Info:
Note: While Amazon.de claims 7,300 Ratings, we counted 1,322 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
Warn Overall Grade
FAIL Suspicious Reviewers
FAIL Phrase Repetition
FAIL Overlapping Review History
WARN Deleted Reviews
WARN Reviewer Ease
WARN Word Count Comparison
PASS Rating Trend
PASS Unverified Purchases
PASS Reviewer Participation
PASS Brand Repeats
PASS Incentivized Reviews
Most Trusted Reviews
Hallo. Gerne berichte ich über meine Erfahrungen mit den oben ... [Go to full review]
Jun 10, 2019
100%
TRUST
TRUST
- Verified Purchaser
- Critical Reviewer (avg. rating: 3.3)
Least Trusted Reviews
Also ich muss sagen, die Osram Night Breaker sind ihr ... [Go to full review]
Jan 21, 2016
0%
TRUST
TRUST
- Verified Purchaser
- Overrepresented word count (39 words)
- Contains repetitive phrases (show)
- Take-Back Reviewer (2 deleted Reviews; avg. rating: 4.5)
- Overlapping Review History: reviewed 1 of 9 top products
- Easy Grader (avg. rating: 4.3)
Analysis Details
Fail Suspicious Reviewers
Take-Back Reviewers
418 of the 1,322 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 4.5 while the reviewers who don't have any deleted reviews in their history have rated this product an average of 4.3. 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
32 reviews
(4.7/5)
(4.7/5)
25 reviews
(3.9/5)
(3.9/5)
57 reviews
(4.7/5)
(4.7/5)
46 reviews
(4.7/5)
(4.7/5)
28 reviews
(4.6/5)
(4.6/5)
16 reviews
(4.7/5)
(4.7/5)
22 reviews
(4.6/5)
(4.6/5)
32 reviews
(4.7/5)
(4.7/5)
37 reviews
(4.9/5)
(4.9/5)
22 reviews
(4.6/5)
(4.6/5)
Common Phrases in Titles:
10 reviews
(4.7/5)
(4.7/5)
22 reviews
(4.8/5)
(4.8/5)
25 reviews
(4.5/5)
(4.5/5)
202 of the 1,322 total reviews for this product use substantial repetitive phrases between them. These reviewers have rated this product an average of 4.7 while reviews without substantial repetitive phrases rated this product an average of 4.3. 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:
2% also reviewed:
Duracell Ultra 9V Block Alkaline Batterien 6LR61,... by Duracell
2% also reviewed:
Philips WhiteVision Xenon-Effekt H4... by Philips automotive lighting
2% also reviewed:
Philips X-tremeVision +130% H1 Scheinwerferlampe... by Philips automotive lighting
2% also reviewed:
TUGA Chemie 5712088 Sprühflasche Alu-Teufel... by TUGA Chemie
2% also reviewed:
SanDisk Ultra Android micro SDXC UHS-I... by SanDisk
2% also reviewed:
Wolfcraft 5996000 Diamant-Bohrer Ceramic Ø 6 mm,... by Wolfcraft
133 of the 1,322 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.
Warn Deleted Reviews
We discovered a total of 50 deleted Reviews for this product, with an average rating of 4.7. 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 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.
Warn Word Count Comparison
-
- 31%
- 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 405 reviews (or 31%) are within an overrepresented word count group. While this is more reviews from overrepresented word count groups than we'd expect to see, the discrepancy in ratings between reviews with overrepresented word groups and all other reviews isn’t significant enough to rule out the possibility of it being due to random chance.
Pass Rating Trend
-
- 3%
- Created over 10 days
We counted 1,322 reviews for this product over the span of 4,083 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 10 days exceeding this threshold:In total, we found that 42 reviews were created on just 10 days. This is within an acceptable range and it does not appear to be significantly affecting the overall rating for this product.
Pass Unverified Purchases
53 of the 1,322 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 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 Brand Repeats
Brand Repeaters
We didn't detect a substantial amount of Brand Repeaters.
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.