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Growth Factor-9 From Novex Biotech Report Feedback

Fail Unnatural reviews detected

Original:

75 Reviews

Adjusted:

5 Reviews

6%
2%

View/Edit Adjustment
How is this calculated
Report Last Updated: Jul 19, 2017
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Report Card

Click a test to jump to details

FAIL Rating Trend
FAIL Brand Repeats
FAIL Suspicious Reviewers
FAIL Overlapping Review History
FAIL Reviewer Participation
WARN Unverified Purchases
WARN Phrase Repetition
PASS Word Count Comparison
PASS Reviewer Ease
PASS Skewed Helpfulness
PASS Sample Reviews
PASS Deleted Reviews
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Other analysis for this product:

Growth Factor 9 From Novex Biotech

6.8
(Out of 10, after 1 review)

Most Trusted Reviews

1/10
It failed too I would recommend it to everyone that ... [Go to full review]
Nov 12, 2016      
70% TRUST
  • Verified Purchaser
  • Overrepresented Participation (posted 3 reviews)
  • Critical Reviewer (avg. rating: 4.0)


Least Trusted Reviews

10/10
This product is for real. I was at a point ... [Go to full review]
Jan 15, 2014      
0% TRUST
  • Unverified Purchaser
  • Created on a high volume day
  • Never-Verified Reviewer
  • Single-Day Reviewer (posted all reviews on Jan 15, 2014)
  • Brand Monogamist (2 of 2 reviews for this brand; avg rating: 10.0)
  • Overrepresented Participation (posted 2 reviews)
  • Easy Grader (avg. rating: 10.0)


Analysis Details

Note: While Bodybuilding.com claims 75 reviews, we counted 61 available on their site.

Fail Rating Trend

  • 7%
  • Created over 1 day

We counted 61 reviews for this product over the span of 1,556 days, an average of 0.0 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 4 reviews were created on just 1 day. The reviews on these high volume days have rated this product an average of 10.0 while reviews from other days have rated this product an average of 6.8. 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 reviews created on high volume days

from reviews created on normal volume days


10.0
6.8


Read more about our Rating Trend test.

Fail Brand Repeats

Brand Loyalists


8 of the 61 reviewers have reviewed multiple products but half or more of their reviews are for this brand. This is an excessively large percentage of Brand Loyalists which may indicate unnatural reviews.

from Brand Loyalists

from Non-Loyalists


9.8
6.6


Brand Monogamists


7 of the 61 reviewers have reviewed multiple products, but only for this brand. This is an excessively large percentage of Brand Monogamists which may indicate unnatural reviews.

from Brand Monogamists

from Non-Monogamists


9.7
6.6


Read more about our Brand Repeats test.

Fail Suspicious Reviewers

One-Hit Wonders


37 of the 61 reviewers have only reviewed this product. This is an excessively large percentage of One-Hit Wonders which may indicate unnatural reviews.

from one-hit wonders

from reviewers with more than one review


7.4
6.3


Never-Verified Reviewers


36 of the 61 reviewers have never written a verified purchase review. The Never-Verified Reviewers have rated this product an average of 8.0 while the reviewers who have written at least one verified purchase review rated this product an average of 5.5. 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 never-verified reviewers

from reviewers with at least one verified purchase review


8.0
5.5


Take-Back Reviewers


6 of the 61 reviewers have had at least one of their past reviews for another product deleted. While this is more Take-Back Reviewers than we'd expect to see, it does not appear to have a significant impact on the overall rating.

from take-back reviewers

from reviewers without previously deleted reviews


4.2
7.3


Read more about our Suspicious Reviewers test.

Fail Overlapping Review History

5% also reviewed:
ISO100 by Dymatize

5% also reviewed:
COR-Performance Whey by Cellucor

5% also reviewed:
Mr. Hyde by Pro Supps

3% also reviewed:
Hyper FX by BSN

3% also reviewed:
Syntha-6 Isolate by BSN

3% also reviewed:
Phase8 by MuscleTech

3% also reviewed:
Clear Muscle by MuscleTech

3% also reviewed:
PRE W.O. by Dymatize

Does not include products
from the same brand


11 of the 61 reviewers have substantial overlapping product review history. These reviewers have rated this product an average of 4.9 while the reviewers who have a more unique product review history rated this product an average of 7.4. 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


4.9
7.4


Read more about our Overlapping Review History test.

Fail Reviewer Participation

  • 92%
  • 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 56 reviewers (or 92%) are within an overrepresented participation group. These reviews have rated this product an average of 7.3, while all other reviews have rated this product an average of 3.0. 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 an overrepresented participation

From reviewers with a properly represented participation


7.3
3.0


Read more about our Reviewer Participation test.

Warn Unverified Purchases

44 of the 61 total reviews for this product are unverified purchases. While this is a higher percentage of unverified purchases than we'd expect to see, the discrepancy in ratings between the unverified purchases and verified purchases isn't significant enough to rule out the possibility of it being due to random chance.

from unverified purchasers

from verified purchases


7.3
6.1


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.

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:
3 reviews
(4.9%)
3 reviews
(4.9%)
3 reviews
(4.9%)
3 reviews
(4.9%)
2 reviews
(3.3%)
2 reviews
(3.3%)
2 reviews
(3.3%)
2 reviews
(3.3%)
Show MoreShow Less


15 of the 61 total reviews for this product use substantial repetitive phrases between them. This is an excessively large percentage which may indicate unnatural reviews.

from reviews with substantial repetitive phrases

from reviews without substantial repetitive phrases


6.8
7.0


Read more about our Phrase Repetition 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 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 7.7, while the average ease score for reviewers in this category is 8.8.

7.7 Product's Average Ease Score

8.8 Category's Average Ease Score


7.7
8.8


Read more about our Reviewer Ease test.


Pass 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 could not find any statistically significant difference in average net helpfulness score between the negative reviews and positive reviews.

0.1 average net helpfulness for positive reviews

-0.2 average net helpfulness for negative reviews


Read more about our Skewed Helpfulness test.


Pass Sample Reviews
  • 0%
  • Mentioned the word "Sample"
We didn't find the word "sample" used in any reviews
Read more about our Sample Reviews test.

Pass Deleted Reviews
  • 0
  • Reviews have been deleted
We have not discovered any deleted reviews for this product.
Read more about our Deleted Reviews test.


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