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【APT-Xコーデック & 10時間連続再生】Bluetooth イヤホン スポーツ IPX6防水...
More product info
From Joyhouse
This report was last updated 12/24/2020.
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 1,824 Ratings, we counted 1,540 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
Deleted ReviewsFAIL Rating Trend
Rating TrendFAIL Word Count Comparison
Word Count ComparisonFAIL Overlapping Review History
Overlapping Review HistoryWARN Brand Repeats
Brand RepeatsWARN Suspicious Reviewers
Suspicious ReviewersWARN Reviewer Participation
Reviewer ParticipationPASS Unverified Purchases
Unverified PurchasesPASS Reviewer Ease
Reviewer EaseN/A Phrase Repetition
Phrase RepetitionN/A Incentivized Reviews
Incentivized Reviews
Most Trusted Reviews
User did not leave written text for this review. [Go to full review]
Sep 10, 2019
59%
TRUST
TRUST
-
Verified Purchaser -
Overrepresented word count (0 words)
-
Easy Grader (avg. rating: 4.5)
Least Trusted Reviews
User did not leave written text for this review. [Go to full review]
Dec 12, 2018
0%
TRUST
TRUST
-
Unverified Purchaser -
Created on a high volume day -
Overrepresented word count (0 words)
-
Overlapping Review History: reviewed 1 of 9 top products -
Overrepresented Participation (posted 3 Reviews) -
Critical Reviewer (avg. rating: 3.3)
Analysis Details
Fail Deleted Reviews
Deleted Reviews
We discovered a total of 188 deleted Reviews for this product, with an average rating of 3.9. 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.
3.9 average rating of deleted reviews
Fail Rating Trend
Rating Trend
-
- 47%
- Created over 57 days
We counted 1,540 reviews for this product over the span of 748 days, an average of 2.1 reviews per day. If these reviews were created randomly, there would be a 99.9% chance that we would see 8 or fewer reviews on any given day.
However, we see the following 57 days exceeding this threshold:In total, we found that 719 reviews were created on just 57 days. The reviews on these high volume days have rated this product an average of 4.1 while reviews from other days have rated this product an average of 3.9. 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.
Fail Word Count Comparison
Word Count Comparison
Word counts are approximated for Hanzi and Kanji
-
- 99%
- 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 1,531 reviews (or 99%) are within an overrepresented word count group. These reviews have rated this product an average of 4.0, while all other reviews have rated this product an average of 3.1. 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
Overlapping Review History
Reviewers of this product have ALSO reviewed the following products:
7% also reviewed:
【2019進化版 Bluetooth5.0 HiFi高音質】... by
6% also reviewed:
【最先端Bluetooth5.0+EDRが搭載】Bluetooth... by
4% also reviewed:
PZX Bluetooth イヤホン 自動ペアリング... by PZX
3% also reviewed:
Bluetooth イヤホン IPX7防水... by DeliToo JP
3% also reviewed:
【2019革新デザイン 260時間再生... by Joyhouse JP
2% also reviewed:
DeliToo 折りたたみ傘 逆折り式... by DeliToo
2% also reviewed:
【令和改良版 7色ライト付き】... by DeliToo JP
2% also reviewed:
【Bluetooth5.0進化版】Bluetooth イヤホン... by Bearoam
2% also reviewed:
【2019最新版＆LEDライト付き】24000mAh... by Joyhouse JP
242 of the 1,540 reviewers have substantial overlapping product review history. These reviewers have rated this product an average of 4.7 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 Brand Repeats
Brand Repeats
Brand Loyalists
34 of the 1,540 reviewers have reviewed multiple products but half or more of their reviews are for this brand. While this is more Brand Loyalists than we'd expect to see, the discrepancy in ratings between the Brand Loyalists and non-loyalists isn't significant enough to rule out the possibility of it being due to random chance.
Warn Suspicious Reviewers
Suspicious Reviewers
One-Hit Wonders
327 of the 1,540 reviewers have only reviewed this product. While this is more One-Hit Wonders than we'd expect to see, it does not appear to have a significant impact on the overall rating.
Warn Reviewer Participation
Reviewer Participation
-
- 58%
- 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 892 reviewers (or 58%) are within an overrepresented participation group. This is an excessively high number of reviewers in overrepresented participation groups.
Pass Unverified Purchases
Unverified Purchases
129 of the 1,540 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
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 4.1, while the average ease score for reviewers in this category is 4.2.
4.1 Product's Average Ease Score
4.2 Category's Average Ease Score
Read more about our Reviewer Ease test.
N/A Phrase Repetition
Phrase Repetition
We have not yet completed optimization for this test for Hanzi or Kanji.
N/A Incentivized Reviews
Incentivized Reviews
We have not yet completed optimization for this test for Hanzi or Kanji.