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Who Lives On The Moon (Moon Facts) : Second Grade Geography Series: 2nd Grade Books (Children's...
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This report was last updated 5/25/2017.
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Report Info:
Last Updated: May 25, 2017
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Note: We only analyze "reviews" and ignore one-tap "ratings".
Report Card
Fail Overall Grade
FAIL Deleted Reviews
FAIL Suspicious Reviewers
FAIL Reviewer Ease
FAIL Phrase Repetition
WARN Rating Trend
WARN Incentivized Reviews
WARN Brand Repeats
WARN Word Count Comparison
WARN Overlapping Review History
PASS Unverified Purchases
PASS Reviewer Participation
Most Trusted Reviews
This book is absolutely wonderful. It's packed with fun moon ... [Go to full review]
Jan 20, 2016
100%
TRUST
TRUST
- Verified Purchaser
- Take-Back Reviewer (7 deleted Reviews; avg. rating: 4.6)
- Critical Reviewer (avg. rating: 4.2)
Least Trusted Reviews
what a brill book for the little onesi received this ... [Go to full review]
Jan 19, 2016
0%
TRUST
TRUST
- Unverified Purchaser
- Created on a high volume day
- Admitted to receiving an incentive
- Contains repetitive phrases (show)
- Never-Verified Reviewer
- Take-Back Reviewer (1 deleted Review; avg. rating: 5.0)
- Brand Loyalist (12 of 15 reviews for this brand; avg rating: 5.0)
- Easy Grader (avg. rating: 5.0)
Analysis Details
Fail Deleted Reviews
We discovered a total of 7 deleted Reviews for this product, with an average rating of 5. 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.
Fail Suspicious Reviewers
Take-Back Reviewers
90 of the 96 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.
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 4.6, while the average ease score for reviewers in this category is 4.4. 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.
4.6 Product's Average Ease Score
4.4 Category's Average Ease Score
Read more about our Reviewer Ease test.
Fail 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:
Show MoreShow Less
appreciate the offer that we were allowed to review this book for you and hope this will help others
2 reviews
7 reviews
13 reviews
10 reviews
9 reviews
2 reviews
2 reviews
9 reviews
7 reviews
2 reviews
59 of the 96 total reviews for this product use substantial repetitive phrases between them. These reviewers have rated this product an average of 4.6 while reviews without substantial repetitive phrases rated this product an average of 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.
Warn Rating Trend
-
- 53%
- Created over 8 days
We counted 96 reviews for this product over the span of 206 days, an average of 0.5 reviews per day. If these reviews were created randomly, there would be a 99.9% chance that we would see 4 or fewer reviews on any given day.
However, we see the following 8 days exceeding this threshold:In total, we found that 51 reviews were created on just 8 days. This is an excessively high number of reviews submitted on these high volume days.
Warn Incentivized Reviews
On Oct 3, 2016, Amazon prohibited incentivized reviews, however we still test for them since there are still millions in our dataset.
67 of the 96 total reviews for this product admitted to receiving a free or discounted product in exchange for a review. This is an excessively large percentage of incentivized reviews which may indicate unnatural reviews.
Read more about our Incentivized Reviews test. Check out our study showing that Incentivized Reviewers are much more likely to leave a positive review.
Warn Brand Repeats
Brand Repeaters
54 of the 96 reviewers have reviewed other products for this brand. While this is more Brand Repeaters than we'd expect to see, it does not appear to have a significant impact on the overall rating.
Warn Word Count Comparison
-
- 33%
- 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 32 reviews (or 33%) 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 Overlapping Review History
Reviewers of this product have ALSO reviewed the following products:
21% also reviewed:
70 Top Green Smoothie Recipe Book: Smoothie... by Samantha Michaels
18% also reviewed:
QuickFire, Instant Fire Starters. Waterproof,... by QuickFire
17% also reviewed:
Paleo Diet, Paleo Cookbook and Vegan Living Made... by Speedy Publishing
16% also reviewed:
Product Unavailable by
15% also reviewed:
Dinosaur Facts For Kids: Children's Dinosaur Books by Speedy Publishing
14% also reviewed:
Essential Oils & Aromatherapy Volume 2 (Boxed... by Speedy Publishing
14% also reviewed:
Paleo Diet Cookbook and Guide (Boxed Set): 3... by Speedy Publishing
Does not include products
from the same brand
from the same brand
67 of the 96 reviewers have substantial overlapping product review history. While this is more than we'd expect to see, the discrepancy in ratings between these reviewers and reviewers who have a more unique product review history isn't significant enough to rule out the possibility of it being due to random chance.
Pass Unverified Purchases
2 of the 96 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 Reviewer Participation
-
- 0%
- From reviewers with an overrepresented participation
We didn't find any participation groups that had a statistically significant greater concentration than what we'd expect to see in this category.
Read more about our Reviewer Participation test.
Read more about our Reviewer Participation test.