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Gold Standard 100% Whey From Optimum Nutrition Report Feedback

Fail Unnatural reviews detected

Original:

10,741 Reviews

Adjusted:

1,586 Reviews

87%
97%

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


Original:

49 Reviews


Adjusted:

36 Reviews


Original:

23 Reviews


Adjusted:

21 Reviews


Original:

23 Reviews


Adjusted:

23 Reviews


Original:

1,162 Reviews


Adjusted:

1,040 Reviews


Original:

28 Reviews


Adjusted:

26 Reviews


Original:

5 Reviews


Adjusted:

5 Reviews


Original:

32 Reviews


Adjusted:

26 Reviews


Original:

17 Reviews


Adjusted:

17 Reviews


Original:

1 Review


Adjusted:

Insufficient reviews


Original:

2 Reviews


Adjusted:

1 Review


Original:

37 Reviews


Adjusted:

32 Reviews


Original:

13 Reviews


Adjusted:

11 Reviews

100% Whey From Optimum

8.8
(Out of 10, after 114 reviews)

Most Trusted Reviews

9/10
No wonder this protein powder is #1 in Bodybuilding.com its ... [Go to full review]
May 17, 2011      
100% TRUST
  • Verified Purchaser
  • Overlapping Review History: reviewed 2 of 9 top products
  • Critical Reviewer (avg. rating: 8.3)


Least Trusted Reviews

10/10
IMO this is the best all around protein anyone can ... [Go to full review]
Jul 31, 2013      
0% TRUST
  • Unverified Purchaser
  • Created on a high volume day
  • Never-Verified Reviewer
  • Single-Day Reviewer (posted all reviews on Jul 31, 2013)
  • Take-Back Reviewer (1 deleted review; avg. rating: 10.0)
  • 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 10,741 reviews, we counted 9,575 available on their site.

Fail Rating Trend

  • 2%
  • Created over 16 days

We counted 9,575 reviews for this product over the span of 3,562 days, an average of 2.7 reviews per day. If these reviews were created randomly, there would be a 99.9% chance that we would see 9 or fewer reviews on any given day.

However, we see the following 16 days exceeding this threshold:In total, we found that 206 reviews were created on just 16 days. The reviews on these high volume days have rated this product an average of 9.5 while reviews from other days have rated this product an average of 9.2. 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.

from reviews created on high volume days

from reviews created on normal volume days


9.5
9.2


Read more about our Rating Trend test.

Fail Brand Repeats

Brand Repeaters


2,670 of the 9,575 reviewers have reviewed other products for this brand. While this is more Brand Repeaters than we'd expect to see, the discrepancy in ratings between the Brand Repeaters and non-repeaters isn't significant enough to rule out the possibility of it being due to random chance.

from Brand Repeaters

from Non-Repeaters


9.3
9.1


Brand Loyalists


1,817 of the 9,575 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


9.4
9.1


Brand Monogamists


874 of the 9,575 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


9.5
9.2


Read more about our Brand Repeats test.

Fail Suspicious Reviewers

One-Hit Wonders


4,206 of the 9,575 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


9.2
9.2


Never-Verified Reviewers


4,976 of the 9,575 reviewers have never written a verified purchase review. While this is more Never-Verified Reviewers than we'd expect to see, it does not appear to have a significant impact on the overall rating.

from never-verified reviewers

from reviewers with at least one verified purchase review


9.1
9.3


Take-Back Reviewers


1,298 of the 9,575 reviewers have had at least one of their past reviews for another product deleted. This is an excessively large percentage of Take-Back Reviewers which may indicate unnatural reviews.

from take-back reviewers

from reviewers without previously deleted reviews


9.2
9.2


Single-Day Reviewers


2,187 of the 9,575 reviewers have written multiple reviews but posted all of them on a single day. While this is more Single-Day Reviewers than we'd expect to see, the discrepancy in ratings between the Single-Day Reviewers and all other reviewers isn't significant enough to rule out the possibility of it being due to random chance.

from single-day reviewers

from non-single-day reviewers


9.3
9.2


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 9, while the average ease score for reviewers in this category is 8.7. 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.

9.0 Product's Average Ease Score

8.7 Category's Average Ease Score


9.0
8.7


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 -0.3 while the positive reviews had an average net helpfulness score of 0.1. 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

0.1 average net helpfulness for positive reviews

-0.3 average net helpfulness for negative reviews


Read more about our Skewed Helpfulness test.


Warn Deleted Reviews

We discovered a total of 108 deleted reviews for this product, with an average rating of 8.9. 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.

8.9 average rating of deleted reviews

8.9



Read more about our Deleted Reviews test.

Warn Unverified Purchases

5,869 of the 9,575 total reviews for this product are unverified purchases. While this is a higher percentage of unverified purchases than we'd expect to see, it does not appear to have a significant impact on the overall rating.

from unverified purchasers

from verified purchases


9.1
9.4


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.

Warn Word Count Comparison

  • 31%
  • 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 2,947 reviews (or 31%) are within an overrepresented word count group. While this is more reviews from overrepresented word count groups than we'd expect to see, the discrepancy in ratings between reviews with overrepresented word groups and all other reviews isn’t significant enough to rule out the possibility of it being due to random chance.

from reviews with an overrepresented word count

from reviews with a properly represented word count


9.3
9.2


Read more about our Word Count Comparison test.

Warn Reviewer Participation

  • 87%
  • 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 8292 reviewers (or 87%) 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


9.2
9.1


Read more about our Reviewer Participation 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:
282 reviews
(2.9%)
230 reviews
(2.4%)
166 reviews
(1.7%)
116 reviews
(1.2%)
Show MoreShow Less


221 of the 9,575 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


9.2
9.2


Read more about our Phrase Repetition test.

Pass Overlapping Review History

6% also reviewed:
C4 Original by Cellucor

5% also reviewed:
Syntha-6 by BSN

5% also reviewed:
Xtend by SciVation

4% also reviewed:
N.O.-Xplode by BSN

3% also reviewed:
Combat Powder by MusclePharm

2% also reviewed:
Phase8 by MuscleTech

2% also reviewed:
COR-Performance Whey by Cellucor

2% also reviewed:
Quest Bars by Quest Nutrition

Does not include products
from the same brand


2,069 of the 9,575 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


9.1
9.2


Read more about our Overlapping Review History test.

Pass Sample Reviews

45 of the 9,575 total reviews for this product mentioned the word "sample" within their review. This is within an acceptable range and it does not appear to be significantly affecting the overall rating for this product.

from reviews that use the word "sample"

from reviews that don't use the word "sample"


8.6
9.2


Read more about our Sample Reviews test.