Ada BlackJack: A True Story of Survival in the Arctic
More product info
From Niven, Jennifer
Refresh the report to view the most up-to-date data available:
Note: We only analyze "reviews" and ignore one-tap "ratings".
Report Card
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Most Trusted Reviews
TRUST
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Verified Purchaser
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Critical Reviewer (avg. rating: 4.3)
Least Trusted Reviews
We couldn't find any low-quality reviews
Analysis Details
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- 8%
- Created over 5 days
We counted 129 reviews for this product over the span of 6,029 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 5 days exceeding this threshold:In total, we found that 10 reviews were created on just 5 days. Although any days with a larger number of reviews than expected is suspicious, the discrepancy in ratings from reviews created on these high volume days and reviews created on other days isn't significant enough to rule out the possibility of it being due to random chance.
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Take-Back Reviewers
46 of the 129 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.
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(5.0/5)
(5.0/5)
(4.5/5)
(4.7/5)
(4.5/5)
(5.0/5)
(5.0/5)
(4.8/5)
(5.0/5)
(4.3/5)
32 of the 129 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.
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42 of the 129 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.
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- 21%
- 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 27 reviews (or 21%) are within an overrepresented word count group. 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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7% also reviewed:
The Ice Master: The Doomed 1913 Voyage of the... by Brand: Hyperion
5% also reviewed:
The Hunger Games (Hunger Games Trilogy, Book 1) by Suzanne Collins
4% also reviewed:
In the Kingdom of Ice: The Grand and Terrible... by Hampton Sides
4% also reviewed:
Winds of Skilak: A Tale of True Grit, True Love... by Bonnie Rose Ward
4% also reviewed:
Island of the Lost: Shipwrecked at the Edge of... by Joan Druett
4% also reviewed:
Wolf Tales by Douglas, Kate
4% also reviewed:
Miss Peregrine's Home for Peculiar... by Ransom Riggs
4% also reviewed:
Maude by Donna Foley Mabry
3% also reviewed:
The Boys in the Boat: Nine Americans and Their... by Daniel James Brown
33 of the 129 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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- 22%
- From reviewers with an overrepresented participation
We see the following 1 participation group with a statistically significant greater concentration than what we'd expect to see:In total, we found that 29 reviewers (or 24%) are within an overrepresented participation group. 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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4.4 Product's Average Ease Score
4.3 Category's Average Ease Score
Read more about our Reviewer Ease test.
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Brand Repeaters
2 of the 129 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.
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- 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.