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[アイシャツ] i-shirt 完全ノーアイロン ストレッチ 速乾 スリムフィット...
More product info From i-Shirt(アイシャツ)

[アイシャツ] i-shirt 完全ノーアイロン ストレッチ 速乾 スリムフィット 長袖 アイシャツ ワイシャツ メンズ View product on Amazon.co.jp
Amazon Reviews for [アイシャツ] i-shirt 完全ノーアイロン ストレッチ 速乾 スリムフィット 長袖 アイシャツ ワイシャツ メンズ
Rating:
0 Ratings
1,650 Reviews
("Ratings" vs. "Reviews")
0% of potentially unnatural reviews removed (why?)
Adjusted:
954 Reviews



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Last Updated: Aug 1, 2021
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Note: While Amazon.co.jp claims 0 Ratings, we counted 1,650 Reviews available on their site.
Note: We only analyze "reviews" and ignore one-tap "ratings".

Report Card

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

Most Trusted Reviews

5/5
User did not leave written text for this review. [Go to full review]
Aug 20, 2018      
73% TRUST
  • Verified Purchaser
  • Overrepresented word count (0 words)
  • Critical Reviewer (avg. rating: 3.9)

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Least Trusted Reviews

4/5
User did not leave written text for this review. [Go to full review]
Sep 12, 2018      
0% TRUST
  • Verified Purchaser
  • Created on a high volume day
  • Overrepresented word count (0 words)
  • Take-Back Reviewer (3 deleted Reviews; avg. rating: 4.7)
  • Brand Repeater (3 of 255 reviews for this brand; avg rating: 4.3)
  • Overlapping Review History: reviewed 5 of 9 top products
  • Critical Reviewer (avg. rating: 4.0)

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Analysis Details

Fail Rating Trend

  • 19%
  • Created over 32 days

We counted 1,650 reviews for this product over the span of 1,569 days, an average of 1.1 reviews per day. If these reviews were created randomly, there would be a 99.9% chance that we would see 6 or fewer reviews on any given day.

However, we see the following 32 days exceeding this threshold:In total, we found that 320 reviews were created on just 32 days. The reviews on these high volume days have rated this product an average of 4.4 while reviews from other days have rated this product an average of 4.3. 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 reviews created on high volume days

from reviews created on normal volume days


4.4
4.3

Read more about our Rating Trend test.

Fail Suspicious Reviewers

Take-Back Reviewers


556 of the 1,650 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 4.5 while the reviewers who don't have any deleted reviews in their history have rated this product an average of 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.

from take-back reviewers

from reviewers without previously deleted reviews


4.5
4.2

Read more about our Suspicious Reviewers test.

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


11% also reviewed:
BackJoy(バックジョイ)... by BackJoy(バックジョイ)


11% also reviewed:
... by プリマソーレ(primasole)


10% also reviewed:
【Amazon.co.jp 限定】アストロ... by アストロ


9% also reviewed:
ザムスト(ZAMST) 手首 薄型サポーター... by ザムスト(ZAMST)


7% also reviewed:
... by


7% also reviewed:
【Amazon限定ブランド】... by モアプレッシャー(More Pressure)


6% also reviewed:
... by プリマソーレ(primasole)


6% also reviewed:
エッセンコアクレブ KLEVV... by エッセンコアクレブ(Essencore Klevv)のストアを表示


6% also reviewed:
Maybelline Fit Me Liquid Foundation R 120... by Visit the メイベリン Store

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Does not include products
from the same brand


542 of the 1,650 reviewers have substantial overlapping product review history. These reviewers have rated this product an average of 4.5 while the reviewers who have a more unique product review history rated this product an average of 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.

from reviewers with substantial overlapping history

from reviewers without a substantial overlapping history


4.5
4.2

Read more about our Overlapping Review History test.

Warn Brand Repeats

Brand Repeaters


515 of the 1,650 reviewers have reviewed other products for this brand. While this is more Brand Repeaters than we'd expect to see, the discrepancy in ratings between the Brand Repeaters and non-repeaters isn't significant enough to rule out the possibility of it being due to random chance.

from Brand Repeaters

from Non-Repeaters


4.5
4.2

Read more about our Brand Repeats test.

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 1,647 reviews (or 100%) 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


4.3
4.7

Read more about our Word Count Comparison test.

Pass Unverified Purchases

182 of the 1,650 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.

from unverified purchasers

from verified purchases


4.2
4.3

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 Participation

  • 0%
  • From reviewers with an overrepresented participation
We didn't find any participation groups that had a statistically significant greater concentration than what we'd expect to see in this category.
Read more about our Reviewer Participation 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 4.2, while the average ease score for reviewers in this category is 4.2.

4.2 Product's Average Ease Score

4.2 Category's Average Ease Score


4.2
4.2

Read more about our Reviewer Ease test.


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 our Deleted Reviews test.

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.