Close
Why is ReviewMeta.com a Must-Have for Amazon Shoppers?
Free Phone Apps
Free Browser Extensions
TFA Dostmann Digitales Thermo-Hygrometer, 30.5005.02, zur Raumklimakontrolle, zur...
More product info
From TFA Dostmann
This report was last updated 11/19/2022.
Refresh the report to view the most up-to-date data available:
Refresh the report to view the most up-to-date data available:
Jump to Report Card
Report Info:
Note: We only analyze "reviews" and ignore one-tap "ratings".
*This is only a Preliminary Report
Our full report will examine much more data, but requires considerably more processing power. Enter your email to receive a notification when the full report is complete.
(
more info)
Our full report will examine much more data, but requires considerably more processing power. Enter your email to receive a notification when the full report is complete.
(
more info)
Report Card
Pass Overall Grade
FAIL 
Deleted Reviews
Deleted ReviewsFAIL Suspicious Reviewers
Suspicious ReviewersFAIL Word Count Comparison
Word Count ComparisonPASS Rating Trend
Rating TrendPASS Unverified Purchases
Unverified PurchasesPASS Phrase Repetition
Phrase RepetitionPASS Overlapping Review History
Overlapping Review HistoryPASS Reviewer Ease
Reviewer EasePASS Brand Repeats
Brand RepeatsPASS Incentivized Reviews
Incentivized ReviewsN/A Reviewer Participation
Reviewer Participation
Most Trusted Reviews
Das kleine Gerät funktioniert recht gut. Es gibt eine Abweichung ... [Go to full review]
Nov 2, 2022
100%
TRUST
TRUST
-
Verified Purchaser
-
Critical Reviewer (avg. rating: 3.0)
Unverified Purchaser
Least Trusted Reviews
User did not leave written text for this review. [Go to full review]
Dec 31, 1969
0%
TRUST
TRUST
-
Verified Purchaser
-
Overrepresented word count (0 words)
-
Take-Back Reviewer (2 deleted Reviews; avg. rating: 3.5) -
Overlapping Review History: reviewed 1 of 9 top products -
Easy Grader (avg. rating: 4.2)
Brand Repeater (2 of 25 reviews for this brand; avg rating: 2.5)
Contains repetitive phrases 
Analysis Details
Fail Deleted Reviews
Deleted Reviews
We discovered a total of 12 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.
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.
4.5 average rating of deleted reviews
Fail Suspicious Reviewers
Suspicious Reviewers
Take-Back Reviewers
Approximately 35% 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 1.2 while the reviewers who don't have any deleted reviews in their history have rated this product an average of 2.1. 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 Word Count Comparison
Word Count Comparison
-
- ~80%
- 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 approximately 80% are within an overrepresented word count group. These reviews have rated this product an average of 1.2, while all other reviews have rated this product an average of 3.9. 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.
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
89 of the 1,662 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.
Pass 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 Titles:
~3% of reviews
(5.0/5)
(5.0/5)
Less than approximately 10% of reviews 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.
Pass Overlapping Review History
Overlapping Review History
Reviewers of this product have ALSO reviewed the following products:
<10% also reviewed:
VARTA Batterien Knopfzelle CR2430, 1 Stück,... by Varta
<10% also reviewed:
BIGtec - 5 Stück - 3m Gigabit Netzwerkkabel... by BIGtec
<10% also reviewed:
Brother Versand-Etiketten, weiß, 62x100mm,... by Brother
<10% also reviewed:
LogiLink AU0006D IDE/SATA Adapter (USB 2.0 auf... by LogiLink
<10% also reviewed:
Beurer LB 12 Mini-Luftbefeuchter, mit... by Beurer
<10% also reviewed:
cg-sonnenschutz Klemmstange weiß Ø 10/12mm... by cg-sonnenschutz
<10% also reviewed:
Amazon Basics AAA-Alkalibatterien,... by Amazon Basics
<10% also reviewed:
GOURMEO Joghurt-Bereiter ohne Strom,1 Liter |... by GOURMEO
Approximately 15% of 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.
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 3.4, while the average ease score for reviewers in this category is 3.9.
3.4 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
Less than approximately 10% of 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.
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.