David Attenborough - Life in Cold Blood [DVD]
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Most Trusted Reviews
TRUST
- Unverified Purchaser
- Take-Back Reviewer (1 deleted Review; avg. rating: 5.0)
- Overrepresented Participation (posted 22 Reviews)
- Critical Reviewer (avg. rating: 2.9)
Least Trusted Reviews
TRUST
- Verified Purchaser
- Take-Back Reviewer (1 deleted Review; avg. rating: 5.0)
- Brand Repeater (4 of 107 reviews for this brand; avg rating: 5.0)
- Overlapping Review History: reviewed 3 of 9 top products
- Easy Grader (avg. rating: 4.7)
Analysis Details
Take-Back Reviewers
12 of the 106 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.
4.4 Product's Average Ease Score
4.3 Category's Average Ease Score
Read more about our Reviewer Ease test.
Brand Repeaters
40 of the 106 reviewers have reviewed other products for this brand. While this is more Brand Repeaters than we'd expect to see, the discrepancy in ratings between the Brand Repeaters and non-repeaters isn't significant enough to rule out the possibility of it being due to random chance.
(5.0/5)
(5.0/5)
(4.8/5)
(4.5/5)
(4.6/5)
(5.0/5)
(5.0/5)
(5.0/5)
(5.0/5)
(5.0/5)
20 of the 106 total reviews for this product use substantial repetitive phrases between them. This is an excessively large percentage which may indicate unnatural reviews.
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- 4%
- Created over 2 days
We counted 106 reviews for this product over the span of 3,592 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 2 days exceeding this threshold:In total, we found that 4 reviews were created on just 2 days. This is within an acceptable range and it does not appear to be significantly affecting the overall rating for this product.
13 of the 106 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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- 19%
- 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 20 reviews (or 19%) 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.
24% also reviewed:
Life in the Undergrowth by Warner Manufacturing
15% also reviewed:
The Hobbit by J. R. R. Tolkien
15% also reviewed:
The Blue Planet: Seas of Life [Blu-ray] by Pierce Brosnan
14% also reviewed:
Dune Messiah (The Dune Chronicles, Book 2) by Frank Herbert
12% also reviewed:
Life by David Attenborough
11% also reviewed:
Planet Earth - Special Edition [Blu-ray] by David Attenborough
10% also reviewed:
The Lord of the Rings: The Motion Picture Trilogy... by Viggo Mortensen
10% also reviewed:
Nature's Most Amazing Events (BD) [Blu-ray] by David Attenborough
9% also reviewed:
Galapagos by
50 of the 106 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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- 27%
- 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 27%) 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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- 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.