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Vipfan Wifi Dongle, USB Wifi Adapter Dual Band 600Mbps/1200Mbps Wireless Network Adapter with 5dBi...
More product info From Vipfan

Amazon Reviews for  Vipfan Wifi Dongle, USB Wifi Adapter Dual Band 600Mbps/1200Mbps Wireless Network Adapter with 5dBi Antenna for PC/Desktop pc/Laptop/Table Supports Windows 10/8/7/Vista/XP/2000, Mac OS X 10.4-10.12
Rating:
86 Ratings
86 Reviews
("Ratings" vs. "Reviews")
21% of potentially unnatural reviews removed (why?)
Adjusted:
View/Edit Adjustment
Jump to Report Card

Report Card

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

Most Trusted Reviews

At first it kept disconnecting from the network but after ... [Go to full review]
May 15, 2019      
100% TRUST
  • Verified Purchaser
  • Easy Grader (avg. rating: 4.6)


Least Trusted Reviews

I recently switched my isp from Spectrum to Frontier FIOS. ... [Go to full review]
Aug 29, 2018      
15% TRUST
  • Verified Purchaser
  • Created on a high volume day
  • Contains repetitive phrases (show)
  • Single-Day Reviewer (posted all reviews on Aug 29, 2018)
  • Take-Back Reviewer (1 deleted Review; avg. rating: 5.0)
  • Overlapping Review History: reviewed 1 of 9 top products
  • Easy Grader (avg. rating: 5.0)


Analysis Details

Fail Deleted Reviews

We discovered a total of 32 deleted Reviews for this product, with an average rating of 5. 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.

5.0 average rating of deleted reviews

5.0


Show distribution of deleted reviews

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

Does not include products
from the same brand


22 of the 86 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 3.8. 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
3.8


Read more about our Overlapping Review History test.

Warn Phrase Repetition
Reviews that contain one of these phrases are NOT necessarily devalued; read more about how this test works here.

Common Phrases in Reviews:
2 reviews
(3.0/5)
2 reviews
(5.0/5)
2 reviews
(5.0/5)
2 reviews
(5.0/5)
2 reviews
(1.0/5)
2 reviews
(5.0/5)
2 reviews
(3.0/5)
2 reviews
(3.0/5)
2 reviews
(2.5/5)
3 reviews
(3.7/5)
Show MoreShow Less
Common Phrases in Titles:
4 reviews
(4.3/5)
2 reviews
(3.0/5)
2 reviews
(1.0/5)
3 reviews
(4.0/5)
2 reviews
(5.0/5)
Show MoreShow Less


20 of the 86 total reviews for this product use substantial repetitive phrases between them. While this is more than we'd expect to see, it does not appear to have a significant impact on the overall rating.

from reviews with substantial repetitive phrases

from reviews without substantial repetitive phrases


3.7
4.1


Read more about our Phrase Repetition test.

Warn Reviewer Participation

  • 84%
  • From reviewers with an overrepresented participation

We see the following 2 participation groups with a statistically significant greater concentration than what we'd expect to see:In total, we found that 72 reviewers (or 84%) 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


4.1
3.6


Read more about our Reviewer Participation test.

Pass Rating Trend

  • 0%
  • Created over 2 days
We counted 86 reviews for this product over the span of 479 days, an average of 0.2 reviews per day. If these reviews were created randomly, there would be a 99.9% chance that we would see 3 or fewer reviews on any given day.

However, we see the following 2 days exceeding this threshold:In total, we found that 0 reviews were created on just 2 days. This is within an acceptable range and it does not appear to be significantly affecting the overall rating for this product.
Read more about our Rating Trend test.

Pass Unverified Purchases

4 of the 86 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


5.0
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 Word Count Comparison

  • 0%
  • Have an overrepresented word count
We didn't find any review word count groups that had a statistically significant greater concentration than what we'd expect to see in this category.
Read more about our Word Count Comparison test.

Pass Suspicious Reviewers

One-Hit Wonders


4 of the 86 reviewers have only reviewed this product. This is within an acceptable range and it does not appear to be significantly affecting the overall rating for this product.

from one-hit wonders

from reviewers with more than one review


2.5
4.1


Never-Verified Reviewers


2 of the 86 reviewers have never written a verified purchase review. This is within an acceptable range and it does not appear to be significantly affecting the overall rating for this product.

from never-verified reviewers

from reviewers with at least one verified purchase review


5.0
4.0


Take-Back Reviewers


9 of the 86 reviewers have had at least one of their past reviews for another product deleted. This is within an acceptable range and it does not appear to be significantly affecting the overall rating for this product.

from take-back reviewers

from reviewers without previously deleted reviews


3.9
4.0


Single-Day Reviewers


3 of the 86 reviewers have written multiple reviews but posted all of them on a single day. This is within an acceptable range and it does not appear to be significantly affecting the overall rating for this product.

from single-day reviewers

from non-single-day reviewers


4.7
4.0


Read more about our Suspicious Reviewers 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 4.3, while the average ease score for reviewers in this category is 4.4.

4.3 Product's Average Ease Score

4.4 Category's Average Ease Score


4.3
4.4


Read more about our Reviewer Ease test.


Pass Brand Repeats

Brand Repeaters

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

Pass Incentivized Reviews
On Oct 3, 2016, Amazon prohibited incentivized reviews, however we still test for them since there are still millions in our dataset.

  • 0%
  • Admitted to receiving an incentive
We didn't detect any reviews that used language indicating they were incentivized.
Read more about our Incentivized Reviews test. Check out our study showing that Incentivized Reviewers are much more likely to leave a positive review.