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【進化版 Bluetooth5.0+EDR IPX7完全防水】bluetooth イヤホン 高音質 一年間保証...
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From RegeMoudal
This report was last updated 6/26/2020.
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.co.jp claims 103 Ratings, we counted 104 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 Deleted Reviews
WARN Rating Trend
WARN Suspicious Reviewers
WARN Word Count Comparison
WARN Reviewer Participation
PASS Unverified Purchases
PASS Overlapping Review History
PASS Reviewer Ease
PASS Brand Repeats
N/A Phrase Repetition
N/A Incentivized Reviews
Most Trusted Reviews
User did not leave written text for this review. [Go to full review]
Jul 17, 2019
73%
TRUST
TRUST
- Verified Purchaser
- Overrepresented word count (0 words)
- Take-Back Reviewer (4 deleted Reviews; avg. rating: 5.0)
- Overlapping Review History: reviewed 6 of 9 top products
- Easy Grader (avg. rating: 4.9)
Least Trusted Reviews
User did not leave written text for this review. [Go to full review]
Oct 29, 2019
19%
TRUST
TRUST
- Verified Purchaser
- Overrepresented word count (0 words)
- Overrepresented Participation (posted 3 Reviews)
- Critical Reviewer (avg. rating: 2.0)
Analysis Details
Fail Deleted Reviews
We discovered a total of 306 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.
Warn Rating Trend
-
- 13%
- Created over 4 days
We counted 104 reviews for this product over the span of 1,026 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 4 days exceeding this threshold:In total, we found that 13 reviews were created on just 4 days. 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 Suspicious Reviewers
One-Hit Wonders
21 of the 104 reviewers have only reviewed this product. While this is more One-Hit Wonders than we'd expect to see, the discrepancy in ratings between the One-Hit Wonders and reviewers who have posted more than one review isn't significant enough to rule out the possibility of it being due to random chance.
Warn Word Count Comparison
Word counts are approximated for Hanzi and Kanji
-
- 100%
- 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 104 reviews (or 100%) are within an overrepresented word count group. This is an excessively high number of reviews in overrepresented word count groups.
Warn Reviewer Participation
-
- 56%
- 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 58 reviewers (or 56%) are within an overrepresented participation group. This is an excessively high number of reviewers in overrepresented participation groups.
Pass Unverified Purchases
27 of the 104 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 Overlapping Review History
Reviewers of this product have ALSO reviewed the following products:
5% also reviewed:
DigHealth 電動エアコンプレッサー... by
5% also reviewed:
[2019進化版 Bluetooth5.0 HiFi高音質] HAVIT... by Havit
5% also reviewed:
【2019最新版 140時間連続駆動... by Hihiccup
4% also reviewed:
T98 電動ドライバー セット USB充電式... by T98
4% also reviewed:
【第2世代進化版... by HolyHigh
4% also reviewed:
モバイルバッテリー 大容量 26800mAh... by XTX
4% also reviewed:
【104時間連続駆動... by ENACFIRE
3% also reviewed:
ボイスレコーダー 小型 icレコーダー... by
Does not include products
from the same brand
from the same brand
7 of the 104 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 4.3, while the average ease score for reviewers in this category is 4.2. While this discrepancy is rather large, it is not quite large enough to rule out the possibility of it being due random chance.
4.3 Product's Average Ease Score
4.2 Category's Average Ease Score
Read more about our Reviewer Ease test.
Pass Brand Repeats
Brand Repeaters
4 of the 104 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.
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.