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Stacked Protein
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From EVLUTION NUTRITION
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Last Updated: Jul 19, 2017
Note: While Bodybuilding.com claims 954 Ratings, we counted 931 Reviews available on their site.
Note: We only analyze "reviews" and ignore one-tap "ratings".
Note: We only analyze "reviews" and ignore one-tap "ratings".
Report Card
Fail Overall Grade
FAIL Unverified Purchases
FAIL Brand Repeats
FAIL Suspicious Reviewers
FAIL Reviewer Ease
WARN Deleted Reviews
WARN Rating Trend
WARN Phrase Repetition
WARN Reviewer Participation
PASS Word Count Comparison
PASS Overlapping Review History
PASS Sample Reviews
Most Trusted Reviews
Great flavors & great price!!! I usually add a little ... [Go to full review]
Dec 14, 2016
100%
TRUST
TRUST
- Verified Purchaser
- Overrepresented word count (43 words)
- Overlapping Review History: reviewed 2 of 9 top products
- Critical Reviewer (avg. rating: 7.8)
Least Trusted Reviews
This is the best birthday cake protein powder i have ... [Go to full review]
Oct 18, 2016
0%
TRUST
TRUST
- Unverified Purchaser
- Created on a high volume day
- Overrepresented word count (49 words)
- Contains repetitive phrases (show)
- Never-Verified Reviewer
- Take-Back Reviewer (1 deleted Review; avg. rating: 8.0)
- 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
Fail Unverified Purchases
377 of the 931 total reviews for this product are unverified purchases. The unverified purchasers have rated this product an average of 9.5 while the verified purchasers have rated this product an average of 9.1. 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.
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.
Fail Brand Repeats
Brand Repeaters
452 of the 931 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.
Brand Loyalists
384 of the 931 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.
Brand Monogamists
260 of the 931 reviewers have reviewed multiple products, but only for this brand. This is an excessively large percentage of Brand Monogamists which may indicate unnatural reviews.
Fail Suspicious Reviewers
One-Hit Wonders
305 of the 931 reviewers have only reviewed this product. This is an excessively large percentage of One-Hit Wonders which may indicate unnatural reviews.
Never-Verified Reviewers
250 of the 931 reviewers have never written a verified purchase review. The Never-Verified Reviewers have rated this product an average of 9.5 while the reviewers who have written at least one verified purchase review 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.
Take-Back Reviewers
270 of the 931 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 9.5 while the reviewers who don't have any deleted reviews in their history 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.
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 9.3, while the average ease score for reviewers in this category is 8.8. 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.
9.3 Product's Average Ease Score
8.8 Category's Average Ease Score
Read more about our Reviewer Ease test.
Warn Deleted Reviews
We discovered a total of 27 deleted Reviews for this product, with an average rating of 9.8. 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:
- 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.
- We have no information on reviews that were never published in the first place.
- 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.
Warn Rating Trend
-
- 17%
- Created over 15 days
We counted 931 reviews for this product over the span of 542 days, an average of 1.7 reviews per day. If these reviews were created randomly, there would be a 99.9% chance that we would see 7 or fewer reviews on any given day.
However, we see the following 15 days exceeding this threshold:In total, we found that 154 reviews were created on just 15 days. This is an excessively high number of reviews submitted on these high volume days.
Warn Phrase Repetition
Reviews that contain one of these phrases are NOT necessarily devalued; read more about how this test works here.
161 of the 931 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.
Warn Reviewer Participation
-
- 77%
- 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 720 reviewers (or 77%) are within an overrepresented participation group. This is an excessively high number of reviewers in overrepresented participation groups.
Pass Word Count Comparison
-
- 27%
- 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 256 reviews (or 27%) are within an overrepresented word count group. This is within an acceptable range and it does not appear to be significantly affecting the overall rating for this product.
Pass Overlapping Review History
Reviewers of this product have ALSO reviewed the following products:
5% also reviewed:
AminoLean Energy Formula by RSP Nutrition
3% also reviewed:
C4 Original by Cellucor
3% also reviewed:
Gold Standard 100% Whey by Optimum Nutrition
3% also reviewed:
COR-Performance Whey by Cellucor
3% also reviewed:
Essential AmiN.O. Energy by Optimum Nutrition
3% also reviewed:
Alpha Amino by Cellucor
3% also reviewed:
PRE-KAGED by Kaged Muscle
172 of the 931 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.
Pass Sample Reviews
43 of the 931 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.