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Sleep Sounds: Heavy Rain From Jeff Bolton Report Feedback

Fail Unnatural reviews detected

Original:

116 Reviews

Adjusted:

11 Reviews

Rank in: Uncategorized
92%
70%

View/Edit Adjustment
How is this calculated
Report Last Updated: Aug 8, 2017
Update Available
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Report Card

Click a test to jump to details

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

We couldn't find any quality reviews

Least Trusted Reviews

5/5
It's a great white noise. Love how it loops on ... [Go to full review]
Jul 17, 2017      
0% TRUST
  • Unverified Purchaser
  • Created on a high volume day
  • Overrepresented word count (12 words)
  • One-Hit Wonder
  • Never-Verified Reviewer
  • Overrepresented Participation (posted 1 review)
  • Easy Grader (avg. rating: 5.0)


Analysis Details


Fail Suspicious Reviewers

One-Hit Wonders


30 of the 116 reviewers have only reviewed this product. The One-Hit Wonders have rated this product an average of 5.0 while the reviewers who have posted more than one review 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 one-hit wonders

from reviewers with more than one review


5.0
4.6


Never-Verified Reviewers


48 of the 116 reviewers have never written a verified purchase review. The Never-Verified Reviewers have rated this product an average of 4.9 while the reviewers who have written at least one verified purchase review 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 never-verified reviewers

from reviewers with at least one verified purchase review


4.9
4.6


Take-Back Reviewers


6 of the 116 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


4.0
4.7


Single-Day Reviewers


21 of the 116 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


4.9
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 4.5, 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.

4.5 Product's Average Ease Score

4.2 Category's Average Ease Score


4.5
4.2


Read more about our Reviewer Ease test.


Fail Reviewer Participation

  • 64%
  • 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 74 reviewers (or 64%) are within an overrepresented participation group. These reviews have rated this product an average of 4.8, while all other reviews have rated this product an average of 4.5. 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 reviewers with an overrepresented participation

From reviewers with a properly represented participation


4.8
4.5


Read more about our Reviewer Participation test.

Warn Rating Trend

  • 9%
  • Created over 1 day

We counted 116 reviews for this product over the span of 78 days, an average of 1.5 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 1 day exceeding this threshold:In total, we found that 10 reviews were created on just 1 day. Although any days with a larger number of reviews than expected is suspicious, these reviews do not appear to have a significant impact on the overall rating.

from reviews created on high volume days

from reviews created on normal volume days


4.3
4.7


Read more about our Rating Trend test.

Warn Unverified Purchases

116 of the 116 total reviews for this product are unverified purchases. This is an excessively large percentage of unverified purchases and it may indicate unnatural reviews.

from unverified purchasers

from verified purchases


4.7
N/A


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

  • 80%
  • 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 2 groups with a statistically significant greater concentration than what we'd expect to see:In total, we found that 93 reviews (or 80%) are within an overrepresented word count group. This is an excessively high number of reviews in overrepresented word count groups.

from reviews with an overrepresented word count

from reviews with a properly represented word count


4.8
4.4


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:
Common Phrases in Titles:
2 reviews
3 reviews
2 reviews
2 reviews
2 reviews
Show MoreShow Less


10 of the 116 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


4.3
4.7


Read more about our Phrase Repetition test.

Pass Overlapping Review History
Reviewers of this product have ALSO reviewed the following products:

3% also reviewed:
Rain Sounds by Nick Schwab

3% also reviewed:
Thunderstorm Sounds by Nick Schwab

2% also reviewed:
AccuWeather by AccuWeather

2% also reviewed:
Product Unavailable by

Does not include products
from the same brand


16 of the 116 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


4.2
4.8


Read more about our Overlapping Review History test.

Pass Brand Repeats

Brand Repeaters


3 of the 116 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


5.0
4.7


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.

  • 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, or 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.
Read more about our Deleted Reviews test.


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