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Introducing Logic: A Graphic Guide (Introducing...)
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From Dan Cryan
This report was last updated 4/5/2021.
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: While Amazon.com claims 38 Ratings, we counted 71 Reviews available on their site.
Note: We only analyze "reviews" and ignore one-tap "ratings".
Note: We only analyze "reviews" and ignore one-tap "ratings".
Top products in Science & Math with authentic reviews:
Report Card
Pass Overall Grade
FAIL
Rating Trend
![](/public/imgs/reviewmeta/rt-icon.png)
WARN
Suspicious Reviewers
![](/public/imgs/reviewmeta/su-icon.png)
WARN
Phrase Repetition
![](/public/imgs/reviewmeta/pr-icon.png)
PASS
Unverified Purchases
![](/public/imgs/reviewmeta/vp-icon.png)
PASS
Word Count Comparison
![](/public/imgs/reviewmeta/wc-icon.png)
PASS
Overlapping Review History
![](/public/imgs/reviewmeta/rh-icon.png)
PASS
Reviewer Participation
![](/public/imgs/reviewmeta/ex-icon.png)
PASS
Reviewer Ease
![](/public/imgs/reviewmeta/sc-icon.png)
PASS
Brand Repeats
![](/public/imgs/reviewmeta/re-icon.png)
PASS
Incentivized Reviews
![](/public/imgs/reviewmeta/ic-icon.png)
PASS
Deleted Reviews
![](/public/imgs/reviewmeta/dl-icon.png)
Most Trusted Reviews
The book discusses many logic beliefs with some examples. It ... [Go to full review]
Jan 27, 2018
100%
TRUST
TRUST
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Unverified Purchaser
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Easy Grader (avg. rating: 4.3)
Least Trusted Reviews
I am mostly echoing several other reviews when I explain ... [Go to full review]
Jul 5, 2018
5%
TRUST
TRUST
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Unverified Purchaser
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Created on a high volume day
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Contains repetitive phrases (
show)
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Take-Back Reviewer (1 deleted Review; avg. rating: 4.0)
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Critical Reviewer (avg. rating: 3.9)
Analysis Details
Fail
Rating Trend
![](/public/imgs/reviewmeta/rt-icon.png)
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- 3%
- Created over 1 day
We counted 71 reviews for this product over the span of 6,719 days, an average of 0.0 reviews per day. If these reviews were created randomly, there would be a 99.9% chance that we would see 1 or fewer reviews on any given day.
However, we see the following 1 day exceeding this threshold:In total, we found that 2 reviews were created on just 1 day. The reviews on these high volume days have rated this product an average of 2.0 while reviews from other days have rated this product an average of 4.1. 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.
Warn
Suspicious Reviewers
![](/public/imgs/reviewmeta/su-icon.png)
Take-Back Reviewers
30 of the 71 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, the discrepancy in ratings between the Take-Back Reviewers and reviewers who don't have any deleted reviews in their history isn't significant enough to rule out the possibility of it being due to random chance.
Warn
Phrase Repetition
![](/public/imgs/reviewmeta/pr-icon.png)
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
5 reviews
(4.8/5)
(4.8/5)
2 reviews
(5.0/5)
(5.0/5)
2 reviews
(2.5/5)
(2.5/5)
2 reviews
(5.0/5)
(5.0/5)
3 reviews
(3.3/5)
(3.3/5)
2 reviews
(4.5/5)
(4.5/5)
2 reviews
(4.5/5)
(4.5/5)
2 reviews
(4.5/5)
(4.5/5)
2 reviews
(3.5/5)
(3.5/5)
2 reviews
(2.5/5)
(2.5/5)
11 of the 71 total reviews for this product use substantial repetitive phrases between them. While this is more than we'd expect to see, it does not appear to have a significant impact on the overall rating.
Pass
Unverified Purchases
![](/public/imgs/reviewmeta/vp-icon.png)
34 of the 71 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
Word Count Comparison
![](/public/imgs/reviewmeta/wc-icon.png)
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- 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.
Read more about our Word Count Comparison test.
Pass
Overlapping Review History
![](/public/imgs/reviewmeta/rh-icon.png)
Reviewers of this product have ALSO reviewed the following products:
7% also reviewed:
PAGE ONE Womens Winter Ribbed Beanie Crossed Cap... by PAGE ONE
6% also reviewed:
Great Expectations by Charles Dickens
6% also reviewed:
Introducing Aristotle by Brand: Icon Books
6% also reviewed:
Neutrogena Hydro Boost Hydrating Foundation Stick... by Neutrogena
4% also reviewed:
Mere Christianity Gift Edition by C. S. Lewis
4% also reviewed:
Dune [Blu-ray] by Kyle MacLachlan
13 of the 71 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 Participation
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- 0%
- From reviewers with an overrepresented participation
We didn't find any participation groups that had a statistically significant greater concentration than what we'd expect to see in this category.
Read more about our Reviewer Participation test.
Read more about our Reviewer Participation test.
Pass
Reviewer Ease
![](/public/imgs/reviewmeta/sc-icon.png)
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 4.2, while the average ease score for reviewers in this category is 4.2.
4.2 Product's Average Ease Score
4.2 Category's Average Ease Score
Read more about our Reviewer Ease test.
Pass
Brand Repeats
![](/public/imgs/reviewmeta/re-icon.png)
Brand Repeaters
1 of the 71 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
![](/public/imgs/reviewmeta/ic-icon.png)
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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- 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. 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
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- 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.