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WisFox HDMI切替器 HDMI分配器 5入力/1出力 4K+3D 高速HDMIセレクター 4K60Hz HDMI2.0...
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Amazon Reviews for  WisFox HDMI切替器 HDMI分配器 5入力/1出力 4K+3D 高速HDMIセレクター 4K60Hz HDMI2.0 HDCP2.2対応 高解像度 自動手動切替機能搭載 USB給電ケーブル リモコン付き PS4 Pro、PS3、Xbox、Fire TV、ROKU、ラップトップ、Apple TV、DVDプレーヤーなど対応 (5入力/1出力)
Rating:
243 Ratings
81 Reviews
("Ratings" vs. "Reviews")
2% of potentially unnatural reviews removed (why?)
Adjusted:
View/Edit Adjustment
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Report Info:
Last Updated: Dec 2, 2021
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Note: While Amazon.co.jp claims 243 Ratings, we counted 81 Reviews available on their site.
Note: We only analyze "reviews" and ignore one-tap "ratings".

Report Card

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

Most Trusted Reviews

1/5
User did not leave written text for this review. [Go to full review]
Feb 12, 2020      
73% TRUST
  • Verified Purchaser
  • Overrepresented word count (0 words)
  • Take-Back Reviewer (2 deleted Reviews; avg. rating: 3.5)
  • Overlapping Review History: reviewed 1 of 9 top products
  • Critical Reviewer (avg. rating: 2.7)


Least Trusted Reviews

We couldn't find any low-quality reviews

Analysis Details

Fail Deleted Reviews

We discovered a total of 170 deleted Reviews for this product, with an average rating of 4.7. 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.

4.7 average rating of deleted reviews

4.7


Show distribution of deleted reviews

Warn Rating Trend

  • 7%
  • Created over 2 days

We counted 81 reviews for this product over the span of 749 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 2 days exceeding this threshold:In total, we found that 6 reviews were created on just 2 days. Although any days with a larger number of reviews than expected is suspicious, the discrepancy in ratings from reviews created on these high volume days and reviews created on other days isn't significant enough to rule out the possibility of it being due to random chance.

from reviews created on high volume days

from reviews created on normal volume days


4.3
3.8


Read more about our Rating Trend test.

Warn Suspicious Reviewers

One-Hit Wonders


11 of the 81 reviewers have only reviewed this product. While this is more One-Hit Wonders than we'd expect to see, the discrepancy in ratings between the One-Hit Wonders and reviewers who have posted more than one review isn't significant enough to rule out the possibility of it being due to random chance.

from one-hit wonders

from reviewers with more than one review


4.2
3.8


Read more about our Suspicious Reviewers 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 81 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


3.9
N/A


Read more about our Word Count Comparison test.

Warn Reviewer Participation

  • 44%
  • 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 36 reviewers (or 44%) 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.

From reviewers with an overrepresented participation

From reviewers with a properly represented participation


4.0
3.8


Read more about our Reviewer Participation test.

Pass Unverified Purchases

2 of the 81 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


3.0
3.9


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:
Fire TV Stick by Amazon

Does not include products
from the same brand


13 of the 81 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


3.5
3.9


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 4, while the average ease score for reviewers in this category is 4.2.

4.0 Product's Average Ease Score

4.2 Category's Average Ease Score


4.0
4.2


Read more about our Reviewer Ease test.


Pass Brand Repeats

Brand Repeaters

We didn't detect a substantial amount of Brand Repeaters.

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.