Ethereum: The Ultimate Guide to the World of Ethereum, Ethereum Mining, Ethereum Investing, Smart... From Ikuya Takashima Report Feedback
Report Last Updated: Dec 17, 2017
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Most Trusted Reviews
- Verified Purchaser
- Brand Repeater (2 of 36 reviews for this brand; avg rating: 5.0)
- Easy Grader (avg. rating: 4.4)
4.6 Product's Average Ease Score
4.3 Category's Average Ease Score
Read more about our Reviewer Ease test.
3 of the 28 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.
10 of the 28 total reviews for this product use substantial repetitive phrases between them. This is an excessively large percentage which may indicate unnatural reviews.
from the same brand
15 of the 28 reviewers have substantial overlapping product review history. While this is more than we'd expect to see, the discrepancy in ratings between these reviewers and reviewers who have a more unique product review history isn't significant enough to rule out the possibility of it being due to random chance.
- 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:
- Created on high-volume days
Read more about our Rating Trend test.
8 of the 28 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.
- Have an overrepresented word count
Read more about our Word Count Comparison test.
0.0 average net helpfulness for positive reviews
0.0 average net helpfulness for negative reviews
Read more about our Skewed Helpfulness test.
- Admitted to receiving an incentive
Read more about our Incentivized Reviews test, or check out our study showing that Incentivized Reviewers are much more likely to leave a positive review.
- Reviews have been deleted
Read more about our Deleted Reviews test.