Under the Trestle: The 1980 Disappearance of Gina Renee Hall & Virginia’s First “No Body”...
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From Ron Peterson Jr.
Refresh the report to view the most up-to-date data available:
Note: We only analyze "reviews" and ignore one-tap "ratings".
Top products in True Crime with authentic reviews:
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Most Trusted Reviews
TRUST
- Verified Purchaser
- Overlapping Review History: reviewed 1 of 9 top products
- Easy Grader (avg. rating: 4.5)
Least Trusted Reviews
TRUST
- Verified Purchaser
- Overrepresented word count (24 words)
- Contains repetitive phrases (show)
- Overrepresented Participation (posted 2 Reviews)
- Critical Reviewer (avg. rating: 3.0)
Analysis Details
One-Hit Wonders
25 of the 355 reviewers have only reviewed this product. The One-Hit Wonders have rated this product an average of 5.0 while the reviewers who have posted more than one review have rated this product an average of 4.8. 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.
4.5 Product's Average Ease Score
4.3 Category's Average Ease Score
Read more about our Reviewer Ease test.
We discovered a total of 1 deleted Review for this product, with an average rating of 5. Even though deleted reviews don't affect the average rating, the fact that action was taken to delete reviews raises some red flags about the integrity of the reviews for the product as whole.
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.
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- 18%
- Created over 11 days
We counted 355 reviews for this product over the span of 677 days, an average of 0.5 reviews per day. If these reviews were created randomly, there would be a 99.9% chance that we would see 4 or fewer reviews on any given day.
However, we see the following 11 days exceeding this threshold:In total, we found that 64 reviews were created on just 11 days. This is an excessively high number of reviews submitted on these high volume days.
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- 45%
- 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 2 groups with a statistically significant greater concentration than what we'd expect to see:In total, we found that 158 reviews (or 45%) are within an overrepresented word count group. While this is more reviews from overrepresented word count groups than we'd expect to see, the discrepancy in ratings between reviews with overrepresented word groups and all other reviews isn’t significant enough to rule out the possibility of it being due to random chance.
(4.9/5)
(5.0/5)
(5.0/5)
(4.9/5)
(5.0/5)
(5.0/5)
(5.0/5)
(5.0/5)
(4.8/5)
(5.0/5)
64 of the 355 total reviews for this product use substantial repetitive phrases between them. While this is more than we'd expect to see, the discrepancy in ratings between the these reviews and reviews without substantial repetitive phrases isn't significant enough to rule out the possibility of it being due to random chance.
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- 69%
- 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:In total, we found that 245 reviewers (or 69%) are within an overrepresented participation group. This is an excessively high number of reviewers in overrepresented participation groups.
36 of the 355 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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2% also reviewed:
My Sister's Grave (Tracy Crosswhite Book 1) by Robert Dugoni
2% also reviewed:
Above Suspicion: An Undercover FBI Agent, an... by Joe Sharkey
2% also reviewed:
If You Tell: A True Story of Murder, Family... by Gregg Olsen
2% also reviewed:
The Michigan Murders by Unknown
2% also reviewed:
Gone Girl: A Novel by Julia Whelan
1% also reviewed:
Bogeyman: He Was Every Parent's Nightmare by Steve Jackson
1% also reviewed:
Maude by Donna Foley Mabry
39 of the 355 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.
Brand Repeaters
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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.