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Wireless FM Transmitter Radio Car Kit with 3.5mm Audio Plug and Car Charger for iPhone 6...
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This report was last updated 11/13/2016.
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Report Info:
Last Updated: Nov 13, 2016
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Note: While Amazon.com claims 57 Ratings, we counted 179 Reviews available on their site.
Note: While we've examined all 179 reviews, our reviewer analysis is based on a sample of 174 reviewers.
Note: We only analyze "reviews" and ignore one-tap "ratings".
Note: While we've examined all 179 reviews, our reviewer analysis is based on a sample of 174 reviewers.
Note: We only analyze "reviews" and ignore one-tap "ratings".
Report Card
Fail Overall Grade
FAIL Rating Trend
FAIL Unverified Purchases
FAIL Incentivized Reviews
FAIL Suspicious Reviewers
FAIL Reviewer Ease
FAIL Phrase Repetition
FAIL Overlapping Review History
PASS Word Count Comparison
PASS Reviewer Participation
PASS Brand Repeats
PASS Deleted Reviews
Most Trusted Reviews
For the money this thing is awesome! Works pretty good ... [Go to full review]
Nov 29, 2015
100%
TRUST
TRUST
- Verified Purchaser
- Take-Back Reviewer (3 deleted Reviews; avg. rating: 2.7)
- Overrepresented Participation (posted 86 Reviews)
- Critical Reviewer (avg. rating: 3.6)
Least Trusted Reviews
Length:: 0:30 Mins I really love this Dash Cam. I ... [Go to full review]
Sep 21, 2015 0 of 1 found this helpful.
0%
TRUST
TRUST
- Unverified Purchaser
- Created on a high volume day
- Admitted to receiving an incentive
- Contains repetitive phrases (show)
- Take-Back Reviewer (334 deleted Reviews; avg. rating: 4.6)
- Overlapping Review History: reviewed 9 of 9 top products
- Easy Grader (avg. rating: 4.8)
Analysis Details
Fail Rating Trend
-
- 10%
- Created over 3 days
We counted 179 reviews for this product over the span of 416 days, an average of 0.4 reviews per day. If these reviews were created randomly, there would be a 99.9% chance that we would see 4 or fewer reviews on any given day.
However, we see the following 3 days exceeding this threshold:In total, we found that 18 reviews were created on just 3 days. The reviews on these high volume days have rated this product an average of 5.0 while reviews from other days have 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.
Fail Unverified Purchases
103 of the 179 total reviews for this product are unverified purchases. The unverified purchasers have rated this product an average of 4.9 while the verified purchasers have 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.
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 Incentivized Reviews
On Oct 3, 2016, Amazon prohibited incentivized reviews, however we still test for them since there are still millions in our dataset.
71 of the 179 total reviews for this product admitted to receiving a free or discounted product in exchange for a review. Incentivized reviews have rated this product an average of 4.8 while reviews that were not incentivized rated this product an average of 4.2. 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.
Read more about our Incentivized Reviews test. Check out our study showing that Incentivized Reviewers are much more likely to leave a positive review.
Fail Suspicious Reviewers
Never-Verified Reviewers
27 of a random sample of 174 reviewers have never written a verified purchase review. The Never-Verified Reviewers have rated this product an average of 5.0 while the reviewers who have written at least one verified purchase review 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 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 4.6, while the average ease score for reviewers in this category is 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.
4.6 Product's Average Ease Score
4.3 Category's Average Ease Score
Read more about our Reviewer Ease test.
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
12 reviews
9 reviews
8 reviews
8 reviews
4 reviews
5 reviews
68 of the 179 total reviews for this product use substantial repetitive phrases between them. These reviewers have rated this product an average of 4.8 while reviews without substantial repetitive phrases rated this product an average of 4.2. 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.
Fail Overlapping Review History
Reviewers of this product have ALSO reviewed the following products:
21% also reviewed:
Facial Brush Cleansing New Skin System Plus Free... by ADELLA Skincare
18% also reviewed:
Kangaroo's - Rubber Duck Baby Bath Toy (18-Pack) by Kangaroo
18% also reviewed:
Kangaroo Flashing LED Light Up Toys, Bumpy Rings,... by Kangaroo
16% also reviewed:
iDeaUSA 7 inch Quad Core Android Tablet PC,... by iDeaUSA
14% also reviewed:
Zeroedge Stick-on Anywhere Portable 10-LED... by Z-Edge
14% also reviewed:
Luseta Beauty Argan Oil Hair Masque, 10 Ounce by Luseta Beauty
14% also reviewed:
Colore 26 Piece Sketch & Drawing Pencils - Best... by Colore
Does not include products
from the same brand
from the same brand
56 of a random sample of 174 reviewers have substantial overlapping product review history. These reviewers have rated this product an average of 4.8 while the reviewers who have a more unique product review history rated this product an average of 4.2. 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.
Pass Word Count Comparison
-
- 17%
- 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 31 reviews (or 17%) are within an overrepresented word count group. This is within an acceptable range and it does not appear to be significantly affecting the overall rating for this product.
Pass Reviewer Participation
-
- 16%
- 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 28 reviewers (or 16%) are within an overrepresented participation group. This is within an acceptable range and it does not appear to be significantly affecting the overall rating for this product.
Pass Brand Repeats
Brand Repeaters
14 of a random sample of 174 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 Deleted Reviews
- 0
- Reviews have been deleted
We have not discovered any deleted reviews for this product.
There are a few limitations to keep in mind regarding the Deleted Reviews test:
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.