Aktien für Einsteiger: Vom Anfänger zum Börsenspezialisten in nur 14 Tagen - Wie Sie von der...
More product info
From Martin Boyle
Refresh the report to view the most up-to-date data available:
Note: We only analyze "reviews" and ignore one-tap "ratings".
Report Card
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Most Trusted Reviews
TRUST
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Verified Purchaser
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Critical Reviewer (avg. rating: 3.0)
Least Trusted Reviews
TRUST
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Verified Purchaser
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Created on a high volume day
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Contains repetitive phrases (
show)
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Brand Repeater (2 of 29 reviews for this brand; avg rating: 5.0)
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Overlapping Review History: reviewed 6 of 9 top products
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Overrepresented Participation (posted 29 Reviews)
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Easy Grader (avg. rating: 4.7)
Analysis Details
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We discovered a total of 14 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:
- 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.
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- 33%
- Created over 8 days
We counted 163 reviews for this product over the span of 411 days, an average of 0.4 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 8 days exceeding this threshold:In total, we found that 53 reviews were created on just 8 days. The reviews on these high volume days have rated this product an average of 5.0 while reviews from other days have rated this product an average of 4.8. 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.
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4.8 Product's Average Ease Score
3.9 Category's Average Ease Score
Read more about our Reviewer Ease test.
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(5.0/5)
(5.0/5)
(4.8/5)
(5.0/5)
(5.0/5)
(5.0/5)
(5.0/5)
(5.0/5)
(5.0/5)
(5.0/5)
122 of the 163 total reviews for this product use substantial repetitive phrases between them. These reviewers have rated this product an average of 5.0 while reviews without substantial repetitive phrases rated this product an average of 4.5. 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.
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60% also reviewed:
Zuckerfreie Ernährung für Anfänger: Mit... by Anne-Marie Neumann
59% also reviewed:
Das große Cocktail Buch: Klassische und Moderne... by Henry McGilmann
48% also reviewed:
Die Kunst der Psychologie: Wie Sie Menschen... by Martin von Oldenburg
45% also reviewed:
Ketogene Ernährung für Anfänger: Gesund... by Alexander Deutschmann
45% also reviewed:
Emotionale Intelligenz : Wie Sie Emotionen... by Eva Cunningham
44% also reviewed:
Die Kunst der Kommunikation: Wie Sie Menschen... by Martin von Oldenburg
44% also reviewed:
Das ultimative Sous Vide Buch für Anfänger:... by Alexander Francois
44% also reviewed:
Aktien für Einsteiger 2021 - Der komplette... by Andreas Beaumont
43% also reviewed:
Immobilien als Kapitalanlage: Wie Sie besonders... by Andreas Beaumont
142 of the 163 reviewers have substantial overlapping product review history. These reviewers have rated this product an average of 5.0 while the reviewers who have a more unique product review history rated this product an average of 4.0. 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.
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Brand Repeaters
57 of the 163 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.
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- 47%
- 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 77 reviewers (or 47%) are within an overrepresented participation group. While this is more reviews from overrepresented participation groups than we'd expect to see, the discrepancy in ratings between reviewers in an overrepresented participation groups and all other reviewers isn’t significant enough to rule out the possibility of it being due to random chance.
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6 of the 163 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.
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- 0%
- Have an overrepresented word count
Read more about our Word Count Comparison test.
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One-Hit Wonders
Never-Verified Reviewers
2 of the 163 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.
Take-Back Reviewers
40 of the 163 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.
Single-Day Reviewers
5 of the 163 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.
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- 0%
- Admitted to receiving an incentive
Read more about our Incentivized Reviews test. Check out our study showing that Incentivized Reviewers are much more likely to leave a positive review.