Sleep Sounds: Rainforest Sounds
From Jeff Bolton
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Report Card
Click a test to jump to details
FAIL
Suspicious Reviewers

WARN
Unverified Purchases

WARN
Reviewer Ease

WARN
Word Count Comparison

WARN
Reviewer Participation

PASS
Rating Trend

PASS
Phrase Repetition

PASS
Overlapping Review History

PASS
Brand Repeats

PASS
Skewed Helpfulness

PASS
Incentivized Reviews

PASS
Deleted Reviews

Most Trusted Reviews
We couldn't find any quality reviews
Least Trusted Reviews
Exce [Go to full review]
Jul 13, 2017
0%
TRUST
TRUST
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Unverified Purchaser
-
Overrepresented word count (1 word)
-
One-Hit Wonder
-
Never-Verified Reviewer
-
Overrepresented Participation (posted 1 review)
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Easy Grader (avg. rating: 5.0)
Analysis Details
Fail
Suspicious Reviewers

One-Hit Wonders
6 of the 11 reviewers have only reviewed this product. This is an excessively large percentage of One-Hit Wonders which may indicate unnatural reviews.
Never-Verified Reviewers
8 of the 11 reviewers have never written a verified purchase review. This is an excessively large percentage of Never-Verified Reviewers which may indicate unnatural reviews.
Single-Day Reviewers
2 of the 11 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, it does not appear to have a significant impact on the overall rating.
Warn
Unverified Purchases

-
- 100%
- Unverified Purchases
11 of the 11 total reviews for this product are unverified purchases. This is an excessively large percentage of unverified purchases and it may indicate 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.
Warn
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 4.6, while the average ease score for reviewers in this category is 4.2. While this discrepancy is rather large, it is not quite large enough to rule out the possibility of it being due random chance.
4.6 Product's Average Ease Score
4.2 Category's Average Ease Score
Read more about our Reviewer Ease test.
Warn
Word Count Comparison

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- 55%
- 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 6 reviews (or 55%) are within an overrepresented word count group. This is an excessively high number of reviews in overrepresented word count groups.
Warn
Reviewer Participation

-
- 73%
- 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 8 reviewers (or 73%) are within an overrepresented participation group. This is an excessively high number of reviewers in overrepresented participation groups.
Pass
Rating Trend

-
- 0%
- Created on high-volume days
We counted 11 reviews for this product over the span of 88 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
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:
2 reviews
(18.2%)
(18.2%)
-
- 0%
- Used substantial repetitive phrases
0 of the 11 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.
Read more about our Phrase Repetition test.
Read more about our Phrase Repetition test.
Pass
Overlapping Review History

18% also reviewed:
Nylabone Dura Chew Regular Red, White, and Blue... by Nylabone
1 of the 11 reviewers has 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
Brand Repeats

Brand Repeaters
We didn't detect a substantial amount of Brand Repeaters.
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.
0.0 average net helpfulness for positive reviews
0.0 average net helpfulness for negative reviews
Read more about our Skewed Helpfulness 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.
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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, or check out our study showing that Incentivized Reviewers are much more likely to leave a positive review.
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.
Read more about our Deleted Reviews test.