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The Life-changing Magic of Tidying: A Simple, Effective Way to Banish Clutter Forever From Marie Kondo Report Feedback

Warn Unnatural reviews possible

Original:

12,833 Reviews

Adjusted:

8,970 Reviews

Rank in: Motivational
45%
51%

View/Edit Adjustment
How is this calculated
Report Last Updated: Feb 14, 2018
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Report Card

Click a test to jump to details

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

I'm not into books on self improvement or organizing. This ... [Go to full review]
Mar 17, 2015      
55% TRUST
  • Verified Purchaser
  • Contains repetitive phrases (show)
  • Critical Reviewer (avg. rating: 3.9)


Least Trusted Reviews

Great read! Lots of simple changes that have big payoffs! ... [Go to full review]
Jul 5, 2015      
0% TRUST
  • Verified Purchaser
  • Created on a high volume day
  • Contains repetitive phrases (show)
  • One-Hit Wonder
  • Overrepresented Participation (posted 1 review)
  • Easy Grader (avg. rating: 5.0)


Analysis Details

Note: While Amazon claims 12,833 reviews, we counted 12,789 available on their site.

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:
217 reviews
(1.7%)
344 reviews
(2.7%)
132 reviews
(1.0%)
Common Phrases in Titles:
412 reviews
(3.2%)
198 reviews
(1.5%)


218 of the 12,789 total reviews for this product use substantial repetitive phrases between them. These reviewers have rated this product an average of 4.9 while reviews without substantial repetitive phrases rated this product an average of 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.

from reviews with substantial repetitive phrases

from reviews without substantial repetitive phrases


4.9
4.4


Read more about our Phrase Repetition test.

Fail Reviewer Participation

  • 66%
  • From reviewers with an overrepresented participation

We see the following 2 participation groups with a statistically significant greater concentration than what we'd expect to see:In total, we found that 8452 reviewers (or 66%) are within an overrepresented participation group. These reviews have rated this product an average of 4.4, while all other reviews have rated this product an average of 4.3. 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


4.4
4.3


Read more about our Reviewer Participation test.

Warn Deleted Reviews

We discovered a total of 143 deleted reviews for this product, with an average rating of 4.7. 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.

4.7 average rating of deleted reviews

4.7



Read more about our Deleted Reviews test.

Warn Rating Trend

  • 29%
  • Created over 125 days

We counted 12,789 reviews for this product over the span of 1,334 days, an average of 9.6 reviews per day. If these reviews were created randomly, there would be a 99.9% chance that we would see 21 or fewer reviews on any given day.

However, we see the following 125 days exceeding this threshold:In total, we found that 3,659 reviews were created on just 125 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


4.4
4.4


Read more about our Rating Trend test.

Warn Suspicious Reviewers

One-Hit Wonders


1,334 of the 12,789 reviewers have only reviewed this product. While this is more One-Hit Wonders than we'd expect to see, it does not appear to have a significant impact on the overall rating.

from one-hit wonders

from reviewers with more than one review


4.4
4.4


Take-Back Reviewers


953 of the 12,789 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


4.4
4.4


Read more about our Suspicious Reviewers test.

Pass Unverified Purchases

1,623 of the 12,789 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


3.9
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 Overlapping Review History

1% also reviewed:
The Nightingale by Kristin Hannah

Does not include products
from the same brand


688 of the 12,789 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


4.1
4.4


Read more about our Overlapping Review History 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


263 of the 12,789 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
4.4


Read more about our Brand Repeats test.

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.

3.2 average net helpfulness for positive reviews

7.8 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.


11 of the 12,789 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


3.8
4.4


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.