BOSS Audio Systems BV9979B Car DVD Player - Single Din, Bluetooth Audio & Hands-Free Calling,...
More product info
From BOSS Audio Systems
Refresh the report to view the most up-to-date data available:
Note: We only analyze "reviews" and ignore one-tap "ratings".
Report Card
Most Trusted Reviews
TRUST
- Verified Purchaser
- Take-Back Reviewer (2 deleted Reviews; avg. rating: 5.0)
- Easy Grader (avg. rating: 5.0)
Least Trusted Reviews
TRUST
- Verified Purchaser
- Overrepresented word count (5 words)
- Overrepresented Participation (posted 3 Reviews)
- Critical Reviewer (avg. rating: 3.3)
Analysis Details
We discovered a total of 231 deleted Reviews for this product, with an average rating of 3.7. 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.
-
- 24%
- 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 43 reviews (or 24%) are within an overrepresented word count group. These reviews have rated this product an average of 4.5, while all other reviews have rated this product an average of 3.3. 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.
One-Hit Wonders
21 of the 177 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.
-
- 40%
- 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 71 reviewers (or 40%) are within an overrepresented participation group. While this is more reviews from overrepresented participation groups than we'd expect to see, these reviews do not appear to have a significant impact on the overall rating.
-
- 2%
- Created over 1 day
We counted 177 reviews for this product over the span of 2,484 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.
However, we see the following 1 day exceeding this threshold:In total, we found that 3 reviews were created on just 1 day. This is within an acceptable range and it does not appear to be significantly affecting the overall rating for this product.
14 of the 177 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.
(3.3/5)
(1.0/5)
(4.7/5)
(1.0/5)
2 of the 177 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.
2% also reviewed:
HDE Waterproof Backup Camera Color Car Rear View... by HDE
2% also reviewed:
Philips Norelco QG3330/60, Multigroom 3100 by Philips Norelco
2% also reviewed:
Metra 40-EU10 VW /BMW/Euro Car to Male Motorola... by Metra Electronics
2% also reviewed:
Kershaw Emerson CQC-10K Folding Pocket Knife, 3.5... by Kershaw
2% also reviewed:
Galaxy S9 Screen Protector Tempered Glass,... by AeapYar
2% also reviewed:
Burxoe Smart Watch,Smartwatch for Android... by Burxoe
1% also reviewed:
Aurum Ultra 4K HDMI Cable 25 ft Braided... by Aurum Cables
1% also reviewed:
Anker SoundSync Drive Bluetooth 4.0 Car Receiver,... by Anker
1% also reviewed:
SUPCASE Unicorn Beetle PRO Series Phone Case for... by SUPCASE
15 of the 177 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.
4.0 Product's Average Ease Score
4.2 Category's Average Ease Score
Read more about our Reviewer Ease test.
Brand Repeaters
7 of the 177 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.
-
- 0%
- Admitted to receiving an incentive
Read more about our Incentivized Reviews test. Check out our study showing that Incentivized Reviewers are much more likely to leave a positive review.