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Educated
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From TARA WESTOVER
This report was last updated 8/7/2021.
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Report Info:
Note: While Amazon.com claims 0 Ratings, we counted 10,000 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".
Report Card
Fail Overall Grade
FAIL Word Count Comparison
FAIL Phrase Repetition
FAIL Reviewer Participation
WARN Rating Trend
WARN Suspicious Reviewers
PASS Unverified Purchases
PASS Overlapping Review History
PASS Reviewer Ease
PASS Brand Repeats
PASS Incentivized Reviews
PASS Deleted Reviews
Most Trusted Reviews
Educated was our book club book for July. Only 2 ... [Go to full review]
Aug 24, 2020
100%
TRUST
TRUST
- Verified Purchaser
- Take-Back Reviewer (1 deleted Review; avg. rating: 4.0)
- Overlapping Review History: reviewed 1 of 9 top products
- Easy Grader (avg. rating: 4.6)
Least Trusted Reviews
This book was a great read. Could not put it ... [Go to full review]
Jan 22, 2019
0%
TRUST
TRUST
- Verified Purchaser
- Created on a high volume day
- Overrepresented word count (18 words)
- Contains repetitive phrases (show)
- Take-Back Reviewer (1 deleted Review; avg. rating: 5.0)
- Overrepresented Participation (posted 22 Reviews)
- Easy Grader (avg. rating: 4.6)
Analysis Details
Fail Word Count Comparison
-
- 55%
- 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 3 groups with a statistically significant greater concentration than what we'd expect to see:In total, we found that 5,478 reviews (or 55%) are within an overrepresented word count group. These reviews have rated this product an average of 4.7, while all other reviews have 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.
Fail 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:
Show MoreShow Less
168 reviews
(5.0/5)
(5.0/5)
168 reviews
(5.0/5)
(5.0/5)
157 reviews
(4.9/5)
(4.9/5)
127 reviews
(4.9/5)
(4.9/5)
240 reviews
(5.0/5)
(5.0/5)
111 reviews
(5.0/5)
(5.0/5)
97 reviews
(5.0/5)
(5.0/5)
105 reviews
(5.0/5)
(5.0/5)
169 reviews
(5.0/5)
(5.0/5)
Common Phrases in Titles:
261 reviews
(5.0/5)
(5.0/5)
561 of the 10,000 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 4.6. 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.
Fail Reviewer Participation
-
- 78%
- From reviewers with an overrepresented participation
We see the following 3 participation groups with a statistically significant greater concentration than what we'd expect to see:In total, we found that 7799 reviewers (or 78%) are within an overrepresented participation group. These reviews have rated this product an average of 4.7, while all other reviews have 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.
Warn Rating Trend
-
- 25%
- Created over 81 days
We counted 10,000 reviews for this product over the span of 947 days, an average of 10.6 reviews per day. If these reviews were created randomly, there would be a 99.9% chance that we would see 23 or fewer reviews on any given day.
However, we see the following 81 days exceeding this threshold:In total, we found that 2,520 reviews were created on just 81 days. This is an excessively high number of reviews submitted on these high volume days.
Warn Suspicious Reviewers
Take-Back Reviewers
2,948 of the 10,000 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.
Pass Unverified Purchases
3,138 of the 10,000 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 Overlapping Review History
Reviewers of this product have ALSO reviewed the following products:
10% also reviewed:
KUPPET 20000mAh External Battery Charging Pack... by KAPPET
4% also reviewed:
The Nightingale: A Novel by Kristin Hannah
4% also reviewed:
All the Light We Cannot See: A Novel by Anthony Doerr
4% also reviewed:
Before We Were Yours: A Novel by Lisa Wingate
3% also reviewed:
A Gentleman in Moscow: A Novel by Amor Towles
3% also reviewed:
Beneath a Scarlet Sky: A Novel by Mark Sullivan
3% also reviewed:
The Goldfinch by Donna Tartt
3% also reviewed:
Great Alone by Kristin Hannah
3% also reviewed:
A Man Called Ove: A Novel by Fredrik Backman
1,758 of the 10,000 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 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 4.4, while the average ease score for reviewers in this category is 4.3. While this discrepancy is rather large, it is not quite large enough to rule out the possibility of it being due random chance.
4.4 Product's Average Ease Score
4.3 Category's Average Ease Score
Read more about our Reviewer Ease test.
Pass Brand Repeats
Brand Repeaters
2 of the 10,000 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
On Oct 3, 2016, Amazon prohibited incentivized reviews, however we still test for them since there are still millions in our dataset.
7 of the 10,000 total reviews for this product admitted to receiving a free or discounted product in exchange for a review. 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 Incentivized Reviews test. Check out our study showing that Incentivized Reviewers are much more likely to leave a positive review.
Pass Deleted Reviews
- 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.