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kutolo iPhone XS MAX ケース iPhone XS MAX カバー TPU シリコン ケース...
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From kutolo
This report was last updated 9/21/2019.
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Report Card
Fail Overall Grade
FAIL Rating Trend
FAIL Unverified Purchases
FAIL Suspicious Reviewers
FAIL Reviewer Ease
FAIL Overlapping Review History
WARN Word Count Comparison
WARN Reviewer Participation
PASS Brand Repeats
PASS Deleted Reviews
N/A Phrase Repetition
N/A Incentivized Reviews
Most Trusted Reviews
とりあえず... [Go to full review]
Jul 19, 2019
100%
TRUST
TRUST
- Verified Purchaser
- Critical Reviewer (avg. rating: 4.0)
Least Trusted Reviews
弟がiPhoneにケースつける... [Go to full review]
Apr 28, 2019
0%
TRUST
TRUST
- Verified Purchaser
- Created on a high volume day
- Overrepresented word count (75 words)
- Take-Back Reviewer (4 deleted Reviews; avg. rating: 5.0)
- Easy Grader (avg. rating: 4.6)
Analysis Details
Fail Rating Trend
-
- 22%
- Created over 6 days
We counted 354 reviews for this product over the span of 161 days, an average of 2.2 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 6 days exceeding this threshold:In total, we found that 78 reviews were created on just 6 days. The reviews on these high volume days have rated this product an average of 5.0 while reviews from other days have rated this product an average of 4.7. 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
8 of the 354 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 4.8. 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.
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
12 of the 354 reviewers have only reviewed this product. The One-Hit Wonders have rated this product an average of 3.9 while the reviewers who have posted more than one review have 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.
Never-Verified Reviewers
3 of the 354 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 4.7. 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 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
Read more about our Reviewer Ease test.
Fail Overlapping Review History
Reviewers of this product have ALSO reviewed the following products:
8% also reviewed:
... by
7% also reviewed:
[音質強化バージョン] iPhone イヤホン... by Beyeah
6% also reviewed:
AMORNO iPhone8 ガラスフィルム iPhone7... by AMORNO
5% also reviewed:
RAVPower モバイルバッテリー 搭載 USB... by
5% also reviewed:
2019新版扇風機 携帯扇風機... by Beyeah
5% also reviewed:
Jawwei 2019年モード 手持ち 扇風機 USB... by Jawwei
4% also reviewed:
【... by
4% also reviewed:
iPhone8/iPhone7 ガラスフィルム Amorno... by AMORNO
Does not include products
from the same brand
from the same brand
114 of the 354 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 4.6. 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.
Warn Word Count Comparison
Word counts are approximated for Hanzi and Kanji
-
- 83%
- 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 3 groups with a statistically significant greater concentration than what we'd expect to see:In total, we found that 294 reviews (or 83%) are within an overrepresented word count group. This is an excessively high number of reviews in overrepresented word count groups.
Warn Reviewer Participation
-
- 78%
- 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 276 reviewers (or 78%) are within an overrepresented participation group. This is an excessively high number of reviewers in overrepresented participation groups.
Pass Brand Repeats
Brand Repeaters
3 of the 354 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.
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.