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DUANDUAN Topper 140 x 200 cm - 7.5 cm Height Two Hardness Levels H3 & H2 Memory Foam Mattress...
More product info
From Brand: DUANDUAN
This report was last updated 12/19/2023.
Refresh the report to view the most up-to-date data available:
Refresh the report to view the most up-to-date data available:
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Report Info:
Note: We only analyze "reviews" and ignore one-tap "ratings".
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Report Card
Fail Overall Grade
FAIL 
Suspicious Reviewers
Suspicious ReviewersFAIL Overlapping Review History
Overlapping Review HistoryWARN Phrase Repetition
Phrase RepetitionPASS Rating Trend
Rating TrendPASS Unverified Purchases
Unverified PurchasesPASS Word Count Comparison
Word Count ComparisonPASS Reviewer Ease
Reviewer EasePASS Brand Repeats
Brand RepeatsPASS Incentivized Reviews
Incentivized ReviewsPASS Deleted Reviews
Deleted ReviewsN/A Reviewer Participation
Reviewer Participation
Most Trusted Reviews
Also ich schreibe wirklich seltenst Bewertungen, aber hier muss ich ... [Go to full review]
Oct 20, 2023
100%
TRUST
TRUST
-
Verified Purchaser
-
Critical Reviewer (avg. rating: 3.3)
Easy Grader (avg. rating: 4.0)
Overrepresented word count (6 words)
Least Trusted Reviews
Ich habe keine Rückenschmerzen und kann daher auch keine Verbesserung ... [Go to full review]
Oct 18, 2023
19%
TRUST
TRUST
-
Verified Purchaser
-
Contains repetitive phrases (show)
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Take-Back Reviewer (59 deleted Reviews; avg. rating: 4.1) -
Overlapping Review History: reviewed 5 of 9 top products -
Critical Reviewer (avg. rating: 3.8)
One-Hit Wonder
Analysis Details
Fail Suspicious Reviewers
Suspicious Reviewers
One-Hit Wonders
Approximately 40% of reviewers have only reviewed this product. This is an excessively large percentage of One-Hit Wonders which may indicate unnatural reviews.
Take-Back Reviewers
Approximately 20% of reviewers have had at least one of their past reviews for another product deleted. The Take-Back Reviewers have rated this product an average of 4.4 while the reviewers who don't have any deleted reviews in their history have rated this product an average of 3.8. 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.
Fail Overlapping Review History
Overlapping Review History
Reviewers of this product have ALSO reviewed the following products:
<10% also reviewed:
Wireless Bluetooth Headset Bluetooth in Ear... by Wincase
<10% also reviewed:
PBN Premium Body Nutrition Whey Protein/... by Premium Body Nutrition
<10% also reviewed:
BIC Intensity Fineliner Fine in Schwarz -... by BIC Intensity
<10% also reviewed:
BoxLegend Wäschenetze Wäschebeutel Wäschesack... by BoxLegend
<10% also reviewed:
WindTook Kulturtasche Herren Damen Kulturbeutel... by WindTook
<10% also reviewed:
Jaybird Vista 2 – vollständig kabellose... by Jaybird
<10% also reviewed:
Geradehalter Haltungskorrektur,Upgraded 2 in... by ZINUU
<10% also reviewed:
KabelDirekt – 6,3mm Mono... by KabelDirekt
<10% also reviewed:
MIHIYIRY SK61 Mechanische Gaming Tastatur, 60%... by MIHIYIRY
Approximately 15% of reviewers have substantial overlapping product review history. These reviewers have rated this product an average of 4.7 while the reviewers who have a more unique product review history rated this product an average of 3.8. 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 Phrase Repetition
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
~7% of reviews
(4.7/5)
(4.7/5)
~5% of reviews
(4.5/5)
(4.5/5)
~5% of reviews
(5.0/5)
(5.0/5)
~5% of reviews
(3.5/5)
(3.5/5)
~7% of reviews
(4.7/5)
(4.7/5)
~5% of reviews
(5.0/5)
(5.0/5)
~5% of reviews
(3.0/5)
(3.0/5)
~5% of reviews
(3.5/5)
(3.5/5)
~5% of reviews
(4.0/5)
(4.0/5)
~5% of reviews
(4.5/5)
(4.5/5)
Over approximately 90% of reviews use substantial repetitive phrases between them. This is an excessively large percentage which may indicate unnatural reviews.
Pass Rating Trend
Rating Trend
-
- <10%
- Created on high-volume days
We didn't notice any signals that would indicate reviews were created unevenly over time.
Read more about our Rating Trend test.
Read more about our Rating Trend test.
Pass Unverified Purchases
Unverified Purchases
-
- 0%
- Unverified Purchases
0 of the 247 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.
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
Word Count Comparison
-
- ~20%
- 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 approximately 20% 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.
Pass Reviewer Ease
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 3, while the average ease score for reviewers in this category is 3.9.
3.0 Product's Average Ease Score
3.9 Category's Average Ease Score
Read more about our Reviewer Ease test.
Pass Brand Repeats
Brand Repeats
Brand Repeaters
We didn't detect a substantial amount of Brand Repeaters.
Pass Incentivized Reviews
Incentivized Reviews
On Oct 3, 2016, Amazon prohibited incentivized reviews, however we still test for them since there are still millions in our dataset.
-
- <10%
- 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.
Read more about our Incentivized Reviews test. Check out our study showing that Incentivized Reviewers are much more likely to leave a positive review.
Pass Deleted Reviews
Deleted Reviews
- 0
- Reviews have been deleted
We have not discovered any deleted reviews for this product.
There are a few limitations to keep in mind regarding the Deleted Reviews test:
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.