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エレコム ハイレゾ対応 ステレオ イヤホン カナル 9.8mm ドライバ ゴールド...
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From エレコム
This report was last updated 7/7/2020.
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 Card
Pass Overall Grade
FAIL Suspicious Reviewers
FAIL Overlapping Review History
WARN Rating Trend
WARN Word Count Comparison
WARN Reviewer Participation
PASS Unverified Purchases
PASS Reviewer Ease
PASS Brand Repeats
PASS Deleted Reviews
N/A Phrase Repetition
N/A Incentivized Reviews
Most Trusted Reviews
User did not leave written text for this review. [Go to full review]
Jan 10, 2015
73%
TRUST
TRUST
- Verified Purchaser
- Overrepresented word count (0 words)
- Critical Reviewer (avg. rating: 3.3)
Least Trusted Reviews
User did not leave written text for this review. [Go to full review]
Sep 19, 2016
0%
TRUST
TRUST
- Unverified Purchaser
- Overrepresented word count (0 words)
- Overlapping Review History: reviewed 1 of 9 top products
- Overrepresented Participation (posted 6 Reviews)
- Critical Reviewer (avg. rating: 2.8)
Analysis Details
Fail Suspicious Reviewers
Take-Back Reviewers
38 of the 666 reviewers have had at least one of their past reviews for another product deleted. The Take-Back Reviewers have rated this product an average of 4.3 while the reviewers who don't have any deleted reviews in their history 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.
Fail Overlapping Review History
Reviewers of this product have ALSO reviewed the following products:
2% also reviewed:
Amazonベーシック... by Amazonベーシック(AmazonBasics)
2% also reviewed:
Anker Soundcore ポータブル Bluetooth4.2... by Anker
2% also reviewed:
Anker PowerCore 10000 (10000mAh 大容量... by
1% also reviewed:
パナソニック カナル型イヤホン... by パナソニック(Panasonic)
1% also reviewed:
HORIC ハイスピードHDMIケーブル 5.0m... by ホーリック(HORIC)
1% also reviewed:
JVC EP-FX9M-B 交換用イヤーピース... by JVCケンウッド
1% also reviewed:
パナソニック エチケットカッター... by パナソニック(Panasonic)
1% also reviewed:
Qtuo ワイヤレスマウス 2.4G... by Qtuo
1% also reviewed:
JVC HA-FX1X-BR XXシリーズ... by JVCケンウッド
67 of the 666 reviewers have substantial overlapping product review history. These reviewers have rated this product an average of 4.2 while the reviewers who have a more unique product review history 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.
Warn Rating Trend
-
- 6%
- Created over 10 days
We counted 666 reviews for this product over the span of 2,027 days, an average of 0.3 reviews per day. If these reviews were created randomly, there would be a 99.9% chance that we would see 3 or fewer reviews on any given day.
However, we see the following 10 days exceeding this threshold:In total, we found that 42 reviews were created on just 10 days. Although any days with a larger number of reviews than expected is suspicious, these reviews do not appear to have a significant impact on the overall rating.
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 666 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
-
- 74%
- From reviewers with an overrepresented participation
We see the following 2 participation groups with a statistically significant greater concentration than what we'd expect to see:In total, we found that 491 reviewers (or 74%) are within an overrepresented participation group. This is an excessively high number of reviewers in overrepresented participation groups.
Pass Unverified Purchases
92 of the 666 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 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 3.9, while the average ease score for reviewers in this category is 4.2.
3.9 Product's Average Ease Score
4.2 Category's Average Ease Score
Read more about our Reviewer Ease 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.