Browser Extensions 

Belkin Home/Office Surge Protector with Phone/Ethernet/Coaxial Protection and Extended Cord From Belkin Report Feedback

Pass Reviews appear natural

Original:

6,794 Reviews

Adjusted:

5,074 Reviews

View/Edit Adjustment
How is this calculated
Last Updated: 1/10/2017

Report Card

Click a test to jump to details

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

Other analysis for this product:


Original:

87 Reviews


Adjusted:

77 Reviews

Most Trusted Reviews

perfect for desk set up. [Go to full review]
Oct 14, 2016      
100% TRUST
  • Verified Purchaser
  • Critical Reviewer (avg. rating: 4.1)


Least Trusted Reviews

Lots of sockets, long cord and works [Go to full review]
Feb 22, 2016      
0% TRUST
  • Verified Purchaser
  • Created on a high volume day
  • Single-Day Reviewer (posted all reviews on Feb 22, 2016)
  • Take-Back Reviewer (1 deleted review; avg. rating: 5.0)
  • Easy Grader (avg. rating: 5.0)


Analysis Details

Note: While Amazon claims 6,794 reviews, we counted 6,776 available on their site.

Fail Rating Trend

  • 20%
  • Created over 129 days

We counted 6,776 reviews for this product over the span of 3,470 days, an average of 2.0 reviews per day. If these reviews were created randomly, there would be a 99.9% chance that we would see 8 or fewer reviews on any given day.

However, we see the following 129 days exceeding this threshold:In total, we found that 1,349 reviews were created on just 129 days. The reviews on these high volume days have rated this product an average of 4.7 while reviews from other days have rated this product an average of 4.6. 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


4.7
4.6


Read more about our Rating Trend test.

Fail Suspicious Reviewers

Take-Back Reviewers


628 of the 6,776 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 4.8 while the reviewers who don't have any deleted reviews in their history have rated this product an average of 4.6. 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 take-back reviewers

from reviewers without previously deleted reviews


4.8
4.6


Single-Day Reviewers


471 of the 6,776 reviewers have written multiple reviews but posted all of them on a single day. The Single-Day reviewers have rated this product an average of 4.8 while all other reviewers rated this product an average of 4.6. 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 single-day reviewers

from non-single-day reviewers


4.8
4.6


Read more about our Suspicious Reviewers test.

Fail 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 4.4, while the average ease score for reviewers in this category is 4.2. 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.

4.4 Product's Average Ease Score

4.2 Category's Average Ease Score


4.4
4.2


Read more about our Reviewer Ease test.


Fail Skewed Helpfulness
We examined the average net helpfulness score of negative reviews against the average net helpfulness score of positive reviews. The net helpfulness score is the number of times a review has been marked as helpful minus the number of times a review has been marked as unhelpful. We found that the negative reviews had an average net helpfulness score of -1.1 while the positive reviews had an average net helpfulness score of 0.0. Based on our statistical modeling, this discrepancy is significant enough to believe that the difference is not due to random chance, but possibly due to influence of unnatural voting patterns.

Example critical reviews

0.0 average net helpfulness for positive reviews

-1.1 average net helpfulness for negative reviews


Read more about our Skewed Helpfulness test.


Warn Deleted Reviews

We discovered a total of 23 deleted reviews for this product, with an average rating of 4.5. 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.

4.5 average rating of deleted reviews

4.5



Read more about our Deleted Reviews test.

Pass Unverified Purchases

356 of the 6,776 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


4.3
4.6


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 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:
378 reviews
(5.6%)
105 reviews
(1.5%)
215 reviews
(3.2%)
113 reviews
(1.7%)
170 reviews
(2.5%)
Show MoreShow Less
Common Phrases in Titles:
120 reviews
(1.8%)
140 reviews
(2.1%)


320 of the 6,776 total reviews for this product use substantial repetitive phrases between them. This is within an acceptable range and it does not appear to be significantly affecting the overall rating for this product.

from reviews with substantial repetitive phrases

from reviews without substantial repetitive phrases


4.7
4.6


Read more about our Phrase Repetition test.

Pass Overlapping Review History
Does not include products
from the same brand


53 of the 6,776 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


4.8
4.6


Read more about our Overlapping Review History test.

Pass Reviewer Participation

  • 0%
  • From reviewers with an overrepresented participation
We didn't find any participation groups that had a statistically significant greater concentration than what we'd expect to see in this category.
Read more about our Reviewer Participation test.

Pass Brand Repeats

Brand Repeaters


671 of the 6,776 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


4.7
4.6


Read more about our Brand Repeats test.

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.


1 of the 6,776 total reviews for this product admitted to receiving a free or discounted product in exchange for a review. This is within an acceptable range and it does not appear to be significantly affecting the overall rating for this product.

from incentivized reviews

from non-incentivized reviews


5.0
4.6


Read more about our Incentivized Reviews test, or check out our study showing that Incentivized Reviewers are much more likely to leave a positive review.