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[海外直送品]2本セット Now Foods 社 (アメリカ製)ギャバ GABA...
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This report was last updated 2/11/2020.
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Report Info:
Note: While Amazon.co.jp claims 145 Ratings, we counted 146 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
Pass Overall Grade
FAIL Suspicious Reviewers
WARN Brand Repeats
WARN Word Count Comparison
WARN Reviewer Participation
PASS Rating Trend
PASS Unverified Purchases
PASS Overlapping Review History
PASS Reviewer Ease
PASS Deleted Reviews
N/A Phrase Repetition
N/A Incentivized Reviews
Most Trusted Reviews
User did not leave written text for this review. [Go to full review]
Nov 21, 2016
73%
TRUST
TRUST
- Verified Purchaser
- Overrepresented word count (0 words)
- Take-Back Reviewer (2 deleted Reviews; avg. rating: 3.0)
- Overlapping Review History: reviewed 2 of 9 top products
- Critical Reviewer (avg. rating: 3.3)
Least Trusted Reviews
User did not leave written text for this review. [Go to full review]
May 27, 2018
5%
TRUST
TRUST
- Verified Purchaser
- Overrepresented word count (0 words)
- Overlapping Review History: reviewed 1 of 9 top products
- Overrepresented Participation (posted 23 Reviews)
- Critical Reviewer (avg. rating: 3.4)
Analysis Details
Fail Suspicious Reviewers
Take-Back Reviewers
10 of the 146 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 2.9 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.
Warn Brand Repeats
Brand Loyalists
4 of the 146 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, it does not appear to have a significant impact on the overall rating.
Warn 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 145 reviews (or 99%) are within an overrepresented word count group. This is an excessively high number of reviews in overrepresented word count groups.
Warn Reviewer Participation
-
- 49%
- 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 72 reviewers (or 49%) are within an overrepresented participation group. While this is more reviews from overrepresented participation groups than we'd expect to see, the discrepancy in ratings between reviewers in an overrepresented participation groups and all other reviewers isn’t significant enough to rule out the possibility of it being due to random chance.
Pass Rating Trend
-
- 2%
- Created over 1 day
We counted 146 reviews for this product over the span of 2,517 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.
Pass Unverified Purchases
6 of the 146 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 Overlapping Review History
Reviewers of this product have ALSO reviewed the following products:
3% also reviewed:
DHC セントジョーンズワート 30日分 by DHC(ディー・エイチ・シー)
3% also reviewed:
【海外直送品】Scivation Xtend BCAA... by Scivation
3% also reviewed:
エンジニア ネジザウルスGT ピンク... by エンジニア(ENGINEER)
3% also reviewed:
Anker PowerLine... by
3% also reviewed:
パナソニック カナル型イヤホン... by パナソニック(Panasonic)
2% also reviewed:
ディアナチュラ DHA with イチョウ葉... by ディアナチュラ
2% also reviewed:
リラックスの素 30日分 by DHC(ディー・エイチ・シー)
2% also reviewed:
Anker PowerCore 10000 (10000mAh 大容量... by
Does not include products
from the same brand
from the same brand
27 of the 146 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.
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 3.9, while the average ease score for reviewers in this category is 4.2.
3.9 Product's Average Ease Score
4.2 Category's Average Ease Score
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:
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.