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Amazon.com > Electronics > Car & Vehicle Electronics > Car Electronics > Car Audio > Car Stereo Receivers
ZUS Universal HD Car Audio Adapter, All Compatible Music Adapter, Wireless in-Car Bluetooth...
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From nonda
This report was last updated 9/27/2020.
Refresh the report to view the most up-to-date data available:
Refresh the report to view the most up-to-date data available:
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Report Info:
Note: While Amazon.com claims 220 Ratings, we counted 72 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 Suspicious Reviewers
FAIL Reviewer Participation
WARN Deleted Reviews
PASS Rating Trend
PASS Unverified Purchases
PASS Word Count Comparison
PASS Phrase Repetition
PASS Overlapping Review History
PASS Reviewer Ease
PASS Brand Repeats
PASS Incentivized Reviews
Most Trusted Reviews
Stopped working less than a month after I got it. ... [Go to full review]
Jul 21, 2018
100%
TRUST
TRUST
- Verified Purchaser
- Easy Grader (avg. rating: 4.6)
Least Trusted Reviews
Your best bet is to buy something from Best Buy. ... [Go to full review]
May 24, 2018
0%
TRUST
TRUST
- Verified Purchaser
- One-Hit Wonder
- Overrepresented Participation (posted 1 Review)
- Critical Reviewer (avg. rating: 1.0)
Analysis Details
Fail Suspicious Reviewers
One-Hit Wonders
4 of the 72 reviewers have only reviewed this product. The One-Hit Wonders have rated this product an average of 1.0 while the reviewers who have posted more than one review have rated this product an average of 2.9. 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
26 of the 72 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.
Fail Reviewer Participation
-
- 24%
- 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 17 reviewers (or 24%) are within an overrepresented participation group. These reviews have rated this product an average of 2.0, while all other reviews have rated this product an average of 3.0. 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.
Warn Deleted Reviews
We discovered a total of 2 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.
Pass Rating Trend
-
- 0%
- Created on high-volume days
We counted 72 reviews for this product over the span of 878 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. We didn't find any days exceeding this threshold.
Read more about our Rating Trend test.
Read more about our Rating Trend test.
Pass Unverified Purchases
10 of the 72 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 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
(1.3/5)
(1.3/5)
2 reviews
(5.0/5)
(5.0/5)
2 reviews
(2.0/5)
(2.0/5)
2 reviews
(2.0/5)
(2.0/5)
2 reviews
(1.0/5)
(1.0/5)
2 reviews
(1.0/5)
(1.0/5)
Common Phrases in Titles:
2 reviews
(3.0/5)
(3.0/5)
2 reviews
(4.5/5)
(4.5/5)
2 reviews
(1.0/5)
(1.0/5)
5 of the 72 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.
Pass Overlapping Review History
Reviewers of this product have ALSO reviewed the following products:
4% also reviewed:
Everlasting Treat For Dogs, Chicken, Medium by Starmark
4% also reviewed:
Filtrete Standard Undersink Water Filtration... by 3M
3% also reviewed:
ProLab Caffeine Tablets 100 Count by ProLab
3% also reviewed:
Valeo 900238B Frameless ULTIMATE 23"... by Valeo
3% also reviewed:
Amazon Prime Video by Amazon.com
3% also reviewed:
Amazon Fire TV with 4K Ultra HD by Amazon
3% also reviewed:
Bluetooth 5.0 Wireless EarbudsQ-041 by QDTT
3% also reviewed:
Slim Money Belt - Perfect for Traveling - Free... by GOnatomy
Does not include products
from the same brand
from the same brand
8 of the 72 reviewers have substantial overlapping product review history. This is within an acceptable range and it does not appear to be significantly affecting the overall rating for this product.
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 4.2.
3.9 Product's Average Ease Score
4.2 Category's Average Ease Score
Read more about our Reviewer Ease 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.