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Pass Reviews appear natural

Original:

24,386 Reviews

Adjusted:

23,459 Reviews

Rank in: Social
99%
99%

View/Edit Adjustment
How is this calculated
Report Last Updated: Nov 13, 2018
Show Report History
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Report Card

Click a test to jump to details

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

Love the ideas I find, it's a great resource! I ... [Go to full review]
Jan 16, 2014      
100% TRUST
  • Verified Purchaser
  • Critical Reviewer (avg. rating: 4.3)


Least Trusted Reviews

Mar 4, 2015      
0% TRUST
  • Verified Purchaser
  • Created on a high volume day
  • Single-Day Reviewer (posted all reviews on Mar 4, 2015)
  • Take-Back Reviewer (1 deleted review; avg. rating: 5.0)
  • Easy Grader (avg. rating: 4.4)


Analysis Details


Fail Suspicious Reviewers

Take-Back Reviewers


1,930 of the 24,386 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


4.5
4.5


Single-Day Reviewers


228 of the 24,386 reviewers have written multiple reviews but posted all of them on a single day. The Single-Day reviewers have rated this product an average of 4.7 while all other reviewers 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 single-day reviewers

from non-single-day reviewers


4.7
4.5


Read more about our Suspicious Reviewers test.

Warn Deleted Reviews

We discovered a total of 583 deleted reviews for this product, with an average rating of 4.6. 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:
  1. 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.
  2. We have no information on reviews that were never published in the first place.
  3. 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.
Read more about the Deleted Reviews test here.

4.6 average rating of deleted reviews

4.6


Show distribution of deleted reviews

Warn Rating Trend

  • 23%
  • Created over 130 days

We counted 24,386 reviews for this product over the span of 2,280 days, an average of 10.7 reviews per day. If these reviews were created randomly, there would be a 99.9% chance that we would see 23 or fewer reviews on any given day.

However, we see the following 130 days exceeding this threshold:In total, we found that 5,612 reviews were created on just 130 days. This is an excessively high number of reviews submitted on these high volume days.

from reviews created on high volume days

from reviews created on normal volume days


4.5
4.5


Read more about our Rating Trend test.

Pass Unverified Purchases

383 of the 24,386 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.

from unverified purchasers

from verified purchases


4.4
4.5


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 Word Count Comparison

  • 0%
  • Have an overrepresented word count
We didn't find any review word count groups that had a statistically significant greater concentration than what we'd expect to see in this category.
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:
867 reviews
(4.1/5)


307 of the 24,386 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


4.2
4.5


Read more about our Phrase Repetition test.

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

7% also reviewed:
Facebook by Facebook

4% also reviewed:
Candy Crush Saga by King

4% also reviewed:
Netflix by Netflix, Inc

3% also reviewed:
Fire by Amazon

3% also reviewed:
Pandora by Pandora Media

2% also reviewed:
Bible by Life.Church

Does not include products
from the same brand


4,998 of the 24,386 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


4.5
4.5


Read more about our Overlapping Review History 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.

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 4.4.

4.4 Product's Average Ease Score

4.4 Category's Average Ease Score


4.4
4.4


Read more about our Reviewer Ease test.


Pass Brand Repeats

Brand Repeaters


34 of the 24,386 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


4.7
4.5


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.


1 of the 24,386 total reviews for this product admitted to receiving a free or discounted product in exchange for a review. This is within an acceptable range and it does not appear to be significantly affecting the overall rating for this product.

from incentivized reviews

from non-incentivized reviews


5.0
4.5


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.


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