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Tenswall 400ml Umidificatore con 7 Colori Cambiato di Luce LED,Diffusore Atomizzatore di essenze e...
More product info From Tenswall

Amazon Reviews for  Tenswall 400ml Umidificatore con 7 Colori Cambiato di Luce LED,Diffusore Atomizzatore di essenze e aromi ad Ultrasuoni, Purificatore aria-Giallo
Rating:
467 Ratings
467 Reviews
("Ratings" vs. "Reviews")
0% of potentially unnatural reviews removed (why?)
Adjusted:
View/Edit Adjustment
Jump to Report Card

Report Card

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

Most Trusted Reviews

3/5
Esteticamente bello, si può attivare per 1h, 3h, 6h poi ... [Go to full review]
Sep 10, 2017      
100% TRUST
  • Verified Purchaser
  • Created on a high volume day
  • Critical Reviewer (avg. rating: 3.9)


Least Trusted Reviews

Veramente soddisfatto, buon prodotto... Lo consiglio vivamente. Spedizione veloce e ... [Go to full review]
May 28, 2017      
38% TRUST
  • Verified Purchaser
  • Contains repetitive phrases (show)
  • Easy Grader (avg. rating: 5.0)


Analysis Details

Fail Deleted Reviews

We discovered a total of 27 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:
  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 our Deleted Reviews test.

5.0 average rating of deleted reviews

5.0


Show distribution of deleted reviews

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:
7 reviews
(4.0/5)
6 reviews
(4.5/5)
18 reviews
(4.6/5)
17 reviews
(4.8/5)
12 reviews
(4.8/5)
4 reviews
(4.5/5)
11 reviews
(4.5/5)
10 reviews
(4.3/5)
3 reviews
(5.0/5)
Show MoreShow Less
Common Phrases in Titles:
10 reviews
(4.8/5)
8 reviews
(4.4/5)
3 reviews
(4.7/5)
3 reviews
(5.0/5)
3 reviews
(4.3/5)
26 reviews
(4.9/5)
Show MoreShow Less


120 of the 467 total reviews for this product use substantial repetitive phrases between them. These reviewers have rated this product an average of 4.7 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.

from reviews with substantial repetitive phrases

from reviews without substantial repetitive phrases


4.7
4.2


Read more about our Phrase Repetition 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 4.3, while the average ease score for reviewers in this category is 4.3. While this discrepancy is rather large, it is not quite large enough to rule out the possibility of it being due random chance.

4.3 Product's Average Ease Score

4.3 Category's Average Ease Score


4.3
4.3


Read more about our Reviewer Ease test.


Pass Rating Trend

  • 5%
  • Created over 4 days

We counted 467 reviews for this product over the span of 1,034 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 4 days exceeding this threshold:In total, we found that 22 reviews were created on just 4 days. This is within an acceptable range and it does not appear to be significantly affecting the overall rating for this product.

from reviews created on high volume days

from reviews created on normal volume days


4.5
4.3


Read more about our Rating Trend test.

Pass Unverified Purchases

29 of the 467 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
4.4


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

  • 25%
  • 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 117 reviews (or 25%) are within an overrepresented word count group. This is within an acceptable range and it does not appear to be significantly affecting the overall rating for this product.

from reviews with an overrepresented word count

from reviews with a properly represented word count


4.3
4.3


Read more about our Word Count Comparison test.

Pass Suspicious Reviewers

One-Hit Wonders


36 of the 467 reviewers have only reviewed this product. This is within an acceptable range and it does not appear to be significantly affecting the overall rating for this product.

from one-hit wonders

from reviewers with more than one review


4.2
4.3


Never-Verified Reviewers


14 of the 467 reviewers have never written a verified purchase review. This is within an acceptable range and it does not appear to be significantly affecting the overall rating for this product.

from never-verified reviewers

from reviewers with at least one verified purchase review


4.0
4.3


Take-Back Reviewers


5 of the 467 reviewers have had at least one of their past reviews for another product deleted. This is within an acceptable range and it does not appear to be significantly affecting the overall rating for this product.

from take-back reviewers

from reviewers without previously deleted reviews


4.0
4.3


Single-Day Reviewers


6 of the 467 reviewers have written multiple reviews but posted all of them on a single day. This is within an acceptable range and it does not appear to be significantly affecting the overall rating for this product.

from single-day reviewers

from non-single-day reviewers


4.3
4.3


Read more about our Suspicious Reviewers test.

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

Does not include products
from the same brand


55 of the 467 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


4.4
4.3


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 Brand Repeats

Brand Repeaters

We didn't detect a substantial amount of Brand Repeaters.

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. Check out our study showing that Incentivized Reviewers are much more likely to leave a positive review.