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San Pellegrino Sparkling Natural Mineral Water, 33.8-ounce plastic bottle
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From San Pellegrino
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Report Info:
Last Updated: Jun 8, 2017
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Note: We only analyze "reviews" and ignore one-tap "ratings".
Report Card
Pass Overall Grade
FAIL
Suspicious Reviewers

WARN
Word Count Comparison

WARN
Reviewer Participation

PASS
Rating Trend

PASS
Unverified Purchases

PASS
Phrase Repetition

PASS
Overlapping Review History

PASS
Reviewer Ease

PASS
Brand Repeats

PASS
Incentivized Reviews

PASS
Deleted Reviews

Most Trusted Reviews
As expected. Good with a fresh lemon or lime too. [Go to full review]
Oct 24, 2015
100%
TRUST
TRUST
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Verified Purchaser
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Take-Back Reviewer (12 deleted Reviews; avg. rating: 4.8)
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Brand Repeater (2 of 244 reviews for this brand; avg rating: 4.0)
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Overlapping Review History: reviewed 4 of 9 top products
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Critical Reviewer (avg. rating: 4.2)
Least Trusted Reviews
We couldn't find any low-quality reviews
Analysis Details
Fail
Suspicious Reviewers

Take-Back Reviewers
12 of the 45 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.
Warn
Word Count Comparison

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- 40%
- 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 18 reviews (or 40%) are within an overrepresented word count group. While this is more reviews from overrepresented word count groups than we'd expect to see, these reviews do not appear to have a significant impact on the overall rating.
Warn
Reviewer Participation

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- 49%
- 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 22 reviewers (or 49%) are within an overrepresented participation group. While this is more reviews from overrepresented participation groups than we'd expect to see, these reviews do not appear to have a significant impact on the overall rating.
Pass
Rating Trend

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- 0%
- Created on high-volume days
We counted 45 reviews for this product over the span of 740 days, an average of 0.1 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. We didn't find any days exceeding this threshold.
Read more about our Rating Trend test.
Read more about our Rating Trend test.
Pass
Unverified Purchases

8 of the 45 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.
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
Phrase Repetition

Reviews that contain one of these phrases are NOT necessarily devalued; read more about how this test works here.
Common Phrases in Titles:
2 reviews
2 of the 45 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.
Pass
Overlapping Review History

Reviewers of this product have ALSO reviewed the following products:
11% also reviewed:
Q-tips Cotton Swabs, Club Pack 1875 ct (Pack of 3) by Q-tips
11% also reviewed:
ZOYA Nail Polish, Ana, 0.5 Fluid Ounce by ZOYA
9% also reviewed:
Root Travel Tin, Pumpkin Spice by Root
7% also reviewed:
TERRA Sweet Potato, No Salt Added, 6 Ounce by Terra
7% also reviewed:
OtterBox Commuter Series Case for iPhone 4/4S -... by OtterBox
7% also reviewed:
Kleenex Ultra Soft & Strong Facial Tissues, 3... by Kleenex
7% also reviewed:
Back to Nature Cookies, Non-GMO Peanut Butter... by Back to Nature
Does not include products
from the same brand
from the same brand
13 of the 45 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
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 4.3. While this discrepancy is rather large, it is not quite large enough to rule out the possibility of it being due random chance.
4.4 Product's Average Ease Score
4.3 Category's Average Ease Score
Read more about our Reviewer Ease test.
Pass
Brand Repeats

Brand Repeaters
2 of the 45 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.
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.
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- 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.
Read more about our Incentivized Reviews test. Check out our study showing that Incentivized Reviewers are much more likely to leave a positive review.
Pass
Deleted Reviews

- 0
- Reviews have been deleted
We have not discovered any deleted reviews for this product.
There are a few limitations to keep in mind regarding the Deleted Reviews test:
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.