Browser Extensions 

Philips Sonicare DiamondClean Smart Elektrische Zahnbürste mit Schalltechnologie HX9924/03,... From Philips Report Feedback

Warn Unnatural reviews possible

Original:

95 Reviews

Adjusted:

60 Reviews

62%
77%

View/Edit Adjustment
How is this calculated
Report Last Updated: Mar 27, 2018
Update Available
Advertisement (Support us to Hide Ads)

Report Card

Click a test to jump to details

FAIL Suspicious Reviewers
WARN Deleted Reviews
WARN Rating Trend
WARN Brand Repeats
WARN Reviewer Ease
WARN Phrase Repetition
WARN Overlapping Review History
PASS Unverified Purchases
PASS Word Count Comparison
PASS Reviewer Participation
PASS Incentivized Reviews
Advertisement (Support us to Hide Ads)

Most Trusted Reviews

Leider ist meine Philips Sonicare DiamondClean kaputtgegangen - habe jetzt ... [Go to full review]
Mar 2, 2018      
100% TRUST
  • Verified Purchaser
  • Brand Repeater (2 of 12 reviews for this brand; avg rating: 4.0)
  • Critical Reviewer (avg. rating: 4.0)


Least Trusted Reviews

Seit einigen Jahren schleiche ich schon um eine Sonicare rum ... [Go to full review]
Nov 5, 2017      
30% TRUST
  • Verified Purchaser
  • Created on a high volume day
  • Contains repetitive phrases (show)
  • Take-Back Reviewer (2 deleted reviews; avg. rating: 5.0)
  • Brand Repeater (18 of 335 reviews for this brand; avg rating: 4.9)
  • Overlapping Review History: reviewed 2 of 9 top products
  • Easy Grader (avg. rating: 4.6)


Analysis Details


Fail Suspicious Reviewers

Take-Back Reviewers


66 of the 95 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.

from take-back reviewers

from reviewers without previously deleted reviews


4.5
4.4


Read more about our Suspicious Reviewers test.

Warn Deleted Reviews

We discovered a total of 4 deleted reviews for this product, with an average rating of 4.5. 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.

4.5 average rating of deleted reviews

4.5



Read more about our Deleted Reviews test.

Warn Rating Trend

  • 6%
  • Created over 1 day

We counted 95 reviews for this product over the span of 159 days, an average of 0.6 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 1 day exceeding this threshold:In total, we found that 6 reviews were created on just 1 day. Although any days with a larger number of reviews than expected is suspicious, the discrepancy in ratings from reviews created on these high volume days and reviews created on other days isn't significant enough to rule out the possibility of it being due to random chance.

from reviews created on high volume days

from reviews created on normal volume days


4.8
4.5


Read more about our Rating Trend test.

Warn Brand Repeats

Brand Repeaters


66 of the 95 reviewers have reviewed other products for this brand. While this is more Brand Repeaters than we'd expect to see, the discrepancy in ratings between the Brand Repeaters and non-repeaters isn't significant enough to rule out the possibility of it being due to random chance.

from Brand Repeaters

from Non-Repeaters


4.6
4.2


Read more about our Brand Repeats 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 4.2. While this discrepancy is rather large, it is not quite large enough to rule out the possibility of it being due random chance.

4.3 Product's Average Ease Score

4.2 Category's Average Ease Score


4.3
4.2


Read more about our Reviewer Ease test.


Warn 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:
12 reviews
(12.6%)
18 reviews
(18.9%)
Show MoreShow Less
Common Phrases in Titles:
4 reviews
(4.2%)
3 reviews
(3.2%)
5 reviews
(5.3%)
2 reviews
(2.1%)
2 reviews
(2.1%)
2 reviews
(2.1%)
Show MoreShow Less


92 of the 95 total reviews for this product use substantial repetitive phrases between them. This is an excessively large percentage which may indicate unnatural reviews.

from reviews with substantial repetitive phrases

from reviews without substantial repetitive phrases


4.5
3.7


Read more about our Phrase Repetition test.

Warn Overlapping Review History
Does not include products
from the same brand


76 of the 95 reviewers have substantial overlapping product review history. This is an excessively large percentage which may indicate unnatural reviews.

from reviewers with substantial overlapping history

from reviewers without a substantial overlapping history


4.5
4.3


Read more about our Overlapping Review History test.

Pass Unverified Purchases

2 of the 95 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


4.0
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 Reviewer Participation

  • 20%
  • 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 19 reviewers (or 20%) are within an overrepresented participation group. This is within an acceptable range and it does not appear to be significantly affecting the overall rating for this product.

From reviewers with an overrepresented participation

From reviewers with a properly represented participation


4.6
4.4


Read more about our Reviewer Participation 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.

  • 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.