The Art of Public Speaking
More product info
From Dale Carnegie
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Report Card
Most Trusted Reviews
TRUST
- Unverified Purchaser
- Overlapping Review History: reviewed 1 of 9 top products
- Critical Reviewer (avg. rating: 4.0)
Least Trusted Reviews
We couldn't find any low-quality reviewsAnalysis Details
One-Hit Wonders
12 of the 60 reviewers have only reviewed this product. While this is more One-Hit Wonders than we'd expect to see, it does not appear to have a significant impact on the overall rating.
Take-Back Reviewers
11 of the 60 reviewers have had at least one of their past reviews for another product deleted. This is an excessively large percentage of Take-Back Reviewers which may indicate unnatural reviews.
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- 42%
- 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 25 reviews (or 42%) are within an overrepresented word count group. These reviews have rated this product an average of 4.3, while all other reviews have rated this product an average of 3.6. 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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- 3%
- Created over 1 day
We counted 60 reviews for this product over the span of 3,154 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. This is within an acceptable range and it does not appear to be significantly affecting the overall rating for this product.
7 of the 60 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.
(4.0/5)
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- 0%
- Used substantial repetitive phrases
Read more about our Phrase Repetition test.
10% also reviewed:
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The Complete Novels of Jane Austen (Knickerbocker... by Jane Austen
5% also reviewed:
Zippo Eagle Lighters by Zippo
3% also reviewed:
Jab, Jab, Jab, Right Hook: How to Tell Your Story... by Gary Vaynerchuk
3% also reviewed:
Confidence: How to Overcome Your Limiting Beliefs... by Martin Meadows
3% also reviewed:
Know Your Bible: All 66 Books Explained and... by Paul Kent
3% also reviewed:
Photography: Complete Guide to Taking... by Nicole Woods
3% also reviewed:
Crucial Internal Solid State Drive by Crucial
13 of the 60 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.
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- 0%
- From reviewers with an overrepresented participation
Read more about our Reviewer Participation test.
4.2 Product's Average Ease Score
4.4 Category's Average Ease Score
Read more about our Reviewer Ease test.
Brand Repeaters
1 of the 60 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.
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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.
- 0
- Reviews have been deleted
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.