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【進化版 3500mAh Bluetooth5.0】Bluetooth イヤホン 120時間連続駆動 Hi-Fi 高音質...
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From AiFer
This report was last updated 2/11/2019.
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 Card
Fail Overall Grade
FAIL Suspicious Reviewers
FAIL Reviewer Ease
FAIL Word Count Comparison
FAIL Overlapping Review History
WARN Rating Trend
WARN Reviewer Participation
PASS Unverified Purchases
PASS Brand Repeats
PASS Deleted Reviews
N/A Phrase Repetition
N/A Incentivized Reviews
Most Trusted Reviews
We couldn't find any quality reviewsLeast Trusted Reviews
ずっとフルワイヤレスが... [Go to full review]
Jan 13, 2019
0%
TRUST
TRUST
- Verified Purchaser
- Overrepresented word count (140 words)
- Take-Back Reviewer (14 deleted Reviews; avg. rating: 5.0)
- Overrepresented Participation (posted 272 Reviews)
- Easy Grader (avg. rating: 4.9)
Analysis Details
Fail Suspicious Reviewers
One-Hit Wonders
248 of the 263 reviewers have only reviewed this product. This is an excessively large percentage of One-Hit Wonders which may indicate 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 4.8, while the average ease score for reviewers in this category is 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.
4.8 Product's Average Ease Score
4.2 Category's Average Ease Score
Read more about our Reviewer Ease test.
Fail Word Count Comparison
Word counts are approximated for Hanzi and Kanji
-
- 88%
- 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 3 groups with a statistically significant greater concentration than what we'd expect to see:In total, we found that 232 reviews (or 88%) are within an overrepresented word count group. These reviews have rated this product an average of 4.9, while all other reviews 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 Overlapping Review History
Reviewers of this product have ALSO reviewed the following products:
7% also reviewed:
[進化版 IPX5完全防水] 白 Bluetooth... by iHarbort
2% also reviewed:
[Bluetooth5.0進化版] IPX7完全防水... by Pasonomi(パソノミ)
2% also reviewed:
MixMart USB C ハブ MacBook Air 13 2018 Macbook... by mixmart
2% also reviewed:
YABAE 目覚まし時計 光 大音量... by
1% also reviewed:
KOMODO Bluetooth イヤホン IPX7防水... by
42 of the 263 reviewers have substantial overlapping product review history. These reviewers have rated this product an average of 5.0 while the reviewers who have a more unique product review history rated this product an average of 4.7. 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 Rating Trend
-
- 9%
- Created over 1 day
We counted 263 reviews for this product over the span of 37 days, an average of 7.1 reviews per day. If these reviews were created randomly, there would be a 99.9% chance that we would see 17 or fewer reviews on any given day.
However, we see the following 1 day exceeding this threshold:In total, we found that 23 reviews were created on just 1 day. Although any days with a larger number of reviews than expected is suspicious, the discrepancy in ratings from reviews created on these high volume days and reviews created on other days isn't significant enough to rule out the possibility of it being due to random chance.
Warn Reviewer Participation
-
- 97%
- 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 255 reviewers (or 97%) are within an overrepresented participation group. This is an excessively high number of reviewers in overrepresented participation groups.
Pass Unverified Purchases
4 of the 263 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 Brand Repeats
Brand Repeaters
We didn't detect a substantial amount of Brand Repeaters.
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.
N/A Phrase Repetition
We have not yet completed optimization for this test for Hanzi or Kanji.
N/A Incentivized Reviews
We have not yet completed optimization for this test for Hanzi or Kanji.