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【令和革新モデル 片耳8時間継続使用 Qi無線充電 Apt-X IPX7】ENACFIRE...
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This report was last updated 11/15/2020.
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Report Info:
Note: While Amazon.co.jp claims 469 Ratings, we counted 278 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
FAIL Rating Trend
FAIL Unverified Purchases
FAIL Suspicious Reviewers
FAIL Word Count Comparison
FAIL Overlapping Review History
FAIL Reviewer Participation
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]
Jan 26, 2020
59%
TRUST
TRUST
- Verified Purchaser
- Overrepresented word count (0 words)
- Critical Reviewer (avg. rating: 3.4)
Least Trusted Reviews
User did not leave written text for this review. [Go to full review]
Feb 14, 2020
0%
TRUST
TRUST
- Unverified Purchaser
- Overrepresented word count (0 words)
- Overrepresented Participation (posted 7 Reviews)
- Critical Reviewer (avg. rating: 3.7)
Analysis Details
Fail Deleted Reviews
We discovered a total of 820 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.
Fail Rating Trend
-
- 8%
- Created over 4 days
We counted 278 reviews for this product over the span of 444 days, an average of 0.6 reviews per day. If these reviews were created randomly, there would be a 99.9% chance that we would see 4 or fewer reviews on any given day.
However, we see the following 4 days exceeding this threshold:In total, we found that 21 reviews were created on just 4 days. The reviews on these high volume days have rated this product an average of 4.7 while reviews from other days have rated this product an average of 4.0. 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 Unverified Purchases
21 of the 278 total reviews for this product are unverified purchases. The unverified purchasers have rated this product an average of 3.2 while the verified purchasers have rated this product an average of 4.1. 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.
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
28 of the 278 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.
Take-Back Reviewers
43 of the 278 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 4.7 while the reviewers who don't have any deleted reviews in their history 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 counts are approximated for Hanzi and Kanji
-
- 95%
- 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 264 reviews (or 95%) are within an overrepresented word count group. These reviews have rated this product an average of 4.1, while all other reviews have rated this product an average of 2.9. 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 Overlapping Review History
Reviewers of this product have ALSO reviewed the following products:
6% also reviewed:
【2019最新版 140時間連続駆動... by Hihiccup
4% also reviewed:
【T5進化版】Mpow M5 Bluetooth... by
3% also reviewed:
【30%OFF】peipai ウォーターピーリング... by
3% also reviewed:
[2019進化版 Bluetooth5.0 HiFi高音質] HAVIT... by Havit
3% also reviewed:
モバイルバッテリー 大容量 26800mAh... by XTX
3% also reviewed:
【208時間連続駆動 Qualcomm... by
3% also reviewed:
FREDI 超小型WiFi隠しカメラ... by FREDI
3% also reviewed:
【2019最新版 Bluetooth5.0】Bluetooth... by Eleproof
3% also reviewed:
TaoTronics ワイヤレスイヤホン Bluetooth... by TaoTronics
29 of the 278 reviewers have substantial overlapping product review history. These reviewers have rated this product an average of 4.9 while the reviewers who have a more unique product review history 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 Reviewer Participation
-
- 77%
- 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 214 reviewers (or 77%) are within an overrepresented participation group. These reviews have rated this product an average of 3.9, while all other reviews have rated this product an average of 4.6. 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.
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, while the average ease score for reviewers in this category is 4.2.
4.0 Product's Average Ease Score
4.2 Category's Average Ease Score
Read more about our Reviewer Ease test.
Pass Brand Repeats
Brand Repeaters
14 of the 278 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.