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PROIDEA プロイデア UTAET ウタエット
More product info From PROIDEA(プロイデア)

Amazon Reviews for  PROIDEA プロイデア UTAET ウタエット
Rating:
83 Ratings
83 Reviews
("Ratings" vs. "Reviews")
0% of potentially unnatural reviews removed (why?)
Adjusted:
View/Edit Adjustment
Jump to Report Card

Report Card

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

Most Trusted Reviews

東急ハンズで見かけて... [Go to full review]
Mar 16, 2017      
100% TRUST
  • Unverified Purchaser
  • Critical Reviewer (avg. rating: 2.5)


Least Trusted Reviews

1/5
ガチクソ... [Go to full review]
Aug 9, 2019      
46% TRUST
  • Verified Purchaser
  • Overrepresented Participation (posted 7 Reviews)
  • Critical Reviewer (avg. rating: 2.9)


Analysis Details

Warn Suspicious Reviewers

One-Hit Wonders


21 of the 83 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.

from one-hit wonders

from reviewers with more than one review


2.7
2.8


Read more about our Suspicious Reviewers test.

Warn Reviewer Participation

  • 54%
  • 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 45 reviewers (or 54%) are within an overrepresented participation group. This is an excessively high number of reviewers in overrepresented participation groups.

From reviewers with an overrepresented participation

From reviewers with a properly represented participation


2.8
2.8


Read more about our Reviewer Participation test.

Pass Rating Trend

  • 4%
  • Created over 1 day

We counted 83 reviews for this product over the span of 1,021 days, an average of 0.1 reviews per day. If these reviews were created randomly, there would be a 99.9% chance that we would see 2 or fewer reviews on any given day.

However, we see the following 1 day exceeding this threshold:In total, we found that 3 reviews were created on just 1 day. This is within an acceptable range and it does not appear to be significantly affecting the overall rating for this product.

from reviews created on high volume days

from reviews created on normal volume days


3.0
2.8


Read more about our Rating Trend test.

Pass Unverified Purchases

17 of the 83 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


2.7
2.8


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 Word Count Comparison
Word counts are approximated for Hanzi and Kanji


  • 22%
  • 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 18 reviews (or 22%) are within an overrepresented word count group. This is within an acceptable range and it does not appear to be significantly affecting the overall rating for this product.

from reviews with an overrepresented word count

from reviews with a properly represented word count


2.7
2.8


Read more about our Word Count Comparison test.

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

2% also reviewed:
ツインバード... by

Does not include products
from the same brand


7 of the 83 reviewers have substantial overlapping product review history. This is within an acceptable range and it does not appear to be significantly affecting the overall rating for this product.

from reviewers with substantial overlapping history

from reviewers without a substantial overlapping history


3.0
2.8


Read more about our Overlapping Review History 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 3.2, while the average ease score for reviewers in this category is 4.2.

3.2 Product's Average Ease Score

4.2 Category's Average Ease Score


3.2
4.2


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:
  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.