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Amazon.com > Electronics > Car & Vehicle Electronics > Car Electronics > Car Safety & Security > Vehicle Backup Cameras
nonda ZUS Smart Backup Camera, Real Wireless Rear View Camera with 170 Degrees Wide Angle and...
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From nonda
This report was last updated 9/6/2020.
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 642 Ratings, we counted 534 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
Pass Overall Grade
FAIL Deleted Reviews
FAIL Rating Trend
WARN Suspicious Reviewers
WARN Reviewer Participation
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
After using it a while, I realize about some non ... [Go to full review]
Feb 2, 2016
100%
TRUST
TRUST
- Verified Purchaser
Reviewer data not yet gathered.
Least Trusted Reviews
My phone is right next to the iHere at work. ... [Go to full review]
Jan 19, 2016
0%
TRUST
TRUST
- Unverified Purchaser
- Created on a high volume day
- One-Hit Wonder
- Never-Verified Reviewer
- Take-Back Reviewer (1 deleted Review; avg. rating: 1.0)
- Overrepresented Participation (posted 1 Review)
- Critical Reviewer (avg. rating: 2.0)
Analysis Details
Fail Deleted Reviews
We discovered a total of 45 deleted Reviews for this product, with an average rating of 4.5. 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 Rating Trend
-
- 4%
- Created over 4 days
We counted 534 reviews for this product over the span of 2,105 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 4 days exceeding this threshold:In total, we found that 23 reviews were created on just 4 days. The reviews on these high volume days have rated this product an average of 4.3 while reviews from other days have rated this product an average of 3.2. 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 Suspicious Reviewers
Take-Back Reviewers
206 of the 534 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.
Warn Reviewer Participation
-
- 56%
- From reviewers with an overrepresented participation
We see the following 2 participation groups with a statistically significant greater concentration than what we'd expect to see:In total, we found that 300 reviewers (or 56%) are within an overrepresented participation group. This is an excessively high number of reviewers in overrepresented participation groups.
Pass Unverified Purchases
82 of the 534 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:
12 reviews
(4.0/5)
(4.0/5)
Common Phrases in Titles:
5 reviews
(1.2/5)
(1.2/5)
1 of the 534 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:
3% also reviewed:
nonda ZUS Smart Car Charger Quick Charge 36W,... by nonda
3% also reviewed:
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2% also reviewed:
Echo Dot (2nd Generation) - Smart speaker with... by Amazon
2% also reviewed:
Amazon Echo - Black (1st Generation) by Amazon
2% also reviewed:
Certified Refurbished Fire TV Stick with Alexa... by Amazon Renewed
1% also reviewed:
Amazon Store Card by Synchrony Bank
1% also reviewed:
Amazon Fire TV with 4K Ultra HD by Amazon
Does not include products
from the same brand
from the same brand
70 of the 534 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 4.3.
3.9 Product's Average Ease Score
4.3 Category's Average Ease Score
Read more about our Reviewer Ease test.
Pass Brand Repeats
Brand Repeaters
22 of the 534 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.
5 of the 534 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.