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Fire TV Stick - Alexa対応音声認識リモコン付属
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Amazon Reviews for  Fire TV Stick - Alexa対応音声認識リモコン付属
Rating:
126,901 Ratings
31,853 Reviews
("Ratings" vs. "Reviews")
80% of potentially unnatural reviews removed (why?)
Adjusted:
View/Edit Adjustment
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Report Info:
Last Updated: May 28, 2021
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Note: While Amazon.co.jp claims 126,901 Ratings, we counted 31,853 Reviews available on their site.
Note: We only analyze "reviews" and ignore one-tap "ratings".

Report Card

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

Most Trusted Reviews

取り付けは簡単で... [Go to full review]
Apr 24, 2019      
52% TRUST
  • Verified Purchaser

Reviewer data not yet gathered.


Least Trusted Reviews

説明書を読まず感覚的に... [Go to full review]
Apr 17, 2019      
25% TRUST
  • Verified Purchaser
  • Overrepresented Participation (posted 2 Reviews)
  • Critical Reviewer (avg. rating: 2.5)


Analysis Details

Fail Rating Trend

  • 72%
  • Created over 166 days

We counted 31,853 reviews for this product over the span of 849 days, an average of 37.5 reviews per day. If these reviews were created randomly, there would be a 99.9% chance that we would see 60 or fewer reviews on any given day.

However, we see the following 166 days exceeding this threshold:In total, we found that 22,919 reviews were created on just 166 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 Word Count Comparison
Word counts are approximated for Hanzi and Kanji


  • 89%
  • 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 28,503 reviews (or 89%) are within an overrepresented word count group. These reviews have rated this product an average of 4.4, while all other reviews 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 with an overrepresented word count

from reviews with a properly represented word count


4.4
4.3


Read more about our Word Count Comparison test.

Warn Deleted Reviews

We discovered a total of 307 deleted Reviews for this product, with an average rating of 4.4. 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:
  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.

4.4 average rating of deleted reviews

4.4


Show distribution of deleted reviews

Warn Suspicious Reviewers

One-Hit Wonders


6,838 of the 31,853 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


4.3
4.4


Read more about our Suspicious Reviewers test.

Warn 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 4.3, while the average ease score for reviewers in this category is 4.2. While this discrepancy is rather large, it is not quite large enough to rule out the possibility of it being due random chance.

4.3 Product's Average Ease Score

4.2 Category's Average Ease Score


4.3
4.2


Read more about our Reviewer Ease test.


Warn Reviewer Participation

  • 58%
  • 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 18584 reviewers (or 58%) 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


4.4
4.4


Read more about our Reviewer Participation test.

Pass Unverified Purchases

235 of the 31,853 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


3.8
4.4


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:

2% also reviewed:
YouTube by Google LLC

1% also reviewed:
Echo Dot 第3世代 -... by Amazon



1,074 of the 31,853 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


4.5
4.4


Read more about our Overlapping Review History test.

Pass Brand Repeats

Brand Repeaters


876 of the 31,853 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.

from Brand Repeaters

from Non-Repeaters


4.4
4.4


Read more about our Brand Repeats 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.