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Agiles Projektmanagement mit Scrum für Einsteiger: Agiles Projektmanagement jetzt im Berufsalltag...
More product info
From Michael Ziegler
This report was last updated 4/11/2022.
Refresh the report to view the most up-to-date data available:
Refresh the report to view the most up-to-date data available:
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Note: We only analyze "reviews" and ignore one-tap "ratings".
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Report Card
Fail Overall Grade
FAIL 
Deleted Reviews
Deleted ReviewsFAIL Reviewer Ease
Reviewer EaseFAIL Word Count Comparison
Word Count ComparisonWARN Suspicious Reviewers
Suspicious ReviewersWARN Overlapping Review History
Overlapping Review HistoryPASS Rating Trend
Rating TrendPASS Unverified Purchases
Unverified PurchasesPASS Phrase Repetition
Phrase RepetitionPASS Brand Repeats
Brand RepeatsPASS Incentivized Reviews
Incentivized ReviewsN/A Reviewer Participation
Reviewer Participation
Most Trusted Reviews
"Agil" ist ja das neue Buzzword schlechthin. Von Softwareentwicklung über ... [Go to full review]
Jun 13, 2020
100%
TRUST
TRUST
-
Verified Purchaser
-
Take-Back Reviewer (1 deleted Review; avg. rating: 5.0) -
Easy Grader (avg. rating: 4.0)
Critical Reviewer (avg. rating: 3.1)
Unverified Purchaser
One-Hit Wonder
Least Trusted Reviews
Für mich als absoluter Neuling auf diesem Gebiet ein super ... [Go to full review]
Nov 16, 2018
0%
TRUST
TRUST
-
Verified Purchaser
-
Overrepresented word count (43 words) -
Contains repetitive phrases (show)
-
Take-Back Reviewer (1 deleted Review; avg. rating: 5.0)
-
Overlapping Review History: reviewed 5 of 9 top products -
Overrepresented Participation (posted 133 Reviews) -
Easy Grader (avg. rating: 4.5)
Analysis Details
Fail Deleted Reviews
Deleted Reviews
We discovered a total of 82 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.
5.0 average rating of deleted reviews
Fail 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 4.6, while the average ease score for reviewers in this category is 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.
4.6 Product's Average Ease Score
3.9 Category's Average Ease Score
Read more about our Reviewer Ease test.
Fail Word Count Comparison
Word Count Comparison
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- ~85%
- 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 85% are within an overrepresented word count group. These reviews have rated this product an average of 0.0, while all other reviews have rated this product an average of 3.0. 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.
Warn Suspicious Reviewers
Suspicious Reviewers
Take-Back Reviewers
Approximately 45% of reviewers have had at least one of their past reviews for another product deleted. While this is more Take-Back Reviewers than we'd expect to see, it does not appear to have a significant impact on the overall rating.
Warn Overlapping Review History
Overlapping Review History
Reviewers of this product have ALSO reviewed the following products:
~45% also reviewed:
Chakren: Chakren verstehen und geistiges Heilen... by Erika Bader
~40% also reviewed:
... by Markus Schneider
~40% also reviewed:
Psychologie für Anfänger: Das Buch für die... by William Kaiser
~40% also reviewed:
Smalltalk: Vom Smalltalk Anfänger zum Experten!... by Leonie Kastner
~40% also reviewed:
Selbstbewusstsein: Im Alltag & Beruf. Mit... by Eva Schneider
~35% also reviewed:
Rhetorik: Verbessern Sie mit diesem Buch Ihre... by Simone Fürst
~30% also reviewed:
Positive Psychologie: Psychologie im Alltag... by Max Krone
~25% also reviewed:
Das ultimative DAYTRADING FÜR EINSTEIGER... by World of Finance
~25% also reviewed:
Einfach mehr Wissen! Rhetorik | Körpersprache |... by Jesse Peterson
Approximately 85% of reviewers have substantial overlapping product review history. 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
25 of the 627 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 Reviews:
~3% of reviews
(4.5/5)
(4.5/5)
-
- <10%
- Used substantial repetitive phrases
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.
Read more about our Phrase Repetition test.
Read more about our Phrase Repetition 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.
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- <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.