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【Bluetooth 5.0+EDR進化版】Bluetooth イヤホン AAC対応 高音質 Bluetooth 5.0 完全...
More product info From Yoleo

Amazon Reviews for 【Bluetooth 5.0+EDR進化版】Bluetooth イヤホン AAC対応 高音質 Bluetooth 5.0 完全 ワイヤレス イヤホン 最軽量4g 簡単自動同期 自動ペアリング 左右両耳対応 マイク内蔵 両耳通話 Yoleo ブルートゥース イヤホン 充電収納ケース付
Rating:
181 Reviews
66% of potentially unnatural reviews removed (Why?)
Adjusted:
View/Edit Adjustment
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Report Card

Fail Overall Grade
FAIL Unverified Purchases
FAIL Suspicious Reviewers
FAIL Reviewer Ease
FAIL Overlapping Review History
WARN Rating Trend
WARN Word Count Comparison
PASS Reviewer Participation
PASS Brand Repeats
PASS Deleted Reviews
N/A Phrase Repetition
N/A Incentivized Reviews

Most Trusted Reviews

とてもいいです!充電も... [Go to full review]
Apr 12, 2019      
100% TRUST
  • Verified Purchaser
  • Easy Grader (avg. rating: 4.8)


Least Trusted Reviews

フィットしません... [Go to full review]
May 13, 2019      
0% TRUST
  • Unverified Purchaser
  • One-Hit Wonder
  • Never-Verified Reviewer
  • Critical Reviewer (avg. rating: 1.0)


Analysis Details

Fail Unverified Purchases

5 of the 181 total reviews for this product are unverified purchases. The unverified purchasers have rated this product an average of 3.6 while the verified purchasers have rated this product an average of 4.9. 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.

from unverified purchasers

from verified purchases


3.6
4.9


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 Suspicious Reviewers

One-Hit Wonders


8 of the 181 reviewers have only reviewed this product. The One-Hit Wonders have rated this product an average of 4.1 while the reviewers who have posted more than one review have rated this product an average of 4.9. 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.

from one-hit wonders

from reviewers with more than one review


4.1
4.9


Never-Verified Reviewers


4 of the 181 reviewers have never written a verified purchase review. The Never-Verified Reviewers have rated this product an average of 3.3 while the reviewers who have written at least one verified purchase review rated this product an average of 4.9. 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.

from never-verified reviewers

from reviewers with at least one verified purchase review


3.3
4.9


Take-Back Reviewers


2 of the 181 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.

from take-back reviewers

from reviewers without previously deleted reviews


5.0
4.8


Read more about our Suspicious Reviewers test.

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


4.8
4.2


Read more about our Reviewer Ease test.


Fail Overlapping Review History
Reviewers of this product have ALSO reviewed the following products:

Does not include products
from the same brand


52 of the 181 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 4.8. 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.

from reviewers with substantial overlapping history

from reviewers without a substantial overlapping history


5.0
4.8


Read more about our Overlapping Review History test.

Warn Rating Trend

  • 7%
  • Created over 1 day

We counted 181 reviews for this product over the span of 54 days, an average of 3.4 reviews per day. If these reviews were created randomly, there would be a 99.9% chance that we would see 11 or fewer reviews on any given day.

However, we see the following 1 day exceeding this threshold:In total, we found that 12 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.

from reviews created on high volume days

from reviews created on normal volume days


5.0
4.8


Read more about our Rating Trend test.

Warn Word Count Comparison
Word counts are approximated for Hanzi and Kanji


  • 62%
  • 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 2 groups with a statistically significant greater concentration than what we'd expect to see:In total, we found that 112 reviews (or 62%) are within an overrepresented word count group. This is an excessively high number of reviews in overrepresented word count groups.

from reviews with an overrepresented word count

from reviews with a properly represented word count


4.9
4.7


Read more about our Word Count Comparison test.

Pass Reviewer Participation

  • 25%
  • 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 46 reviewers (or 25%) 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.

From reviewers with an overrepresented participation

From reviewers with a properly represented participation


4.9
4.8


Read more about our Reviewer Participation 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:
  1. 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.
  2. We have no information on reviews that were never published in the first place.
  3. 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.
Read more about the Deleted Reviews test here.

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.


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