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Harry Potter and the Sorcerer's Stone
More product info
From Daniel Radcliffe
This report was last updated 6/12/2020.
Refresh the report to view the most up-to-date data available:
Refresh the report to view the most up-to-date data available:
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Report Info:
Note: While Amazon.com claims 3,122 Ratings, we counted 3,141 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".
Top products in TV with authentic reviews:
Report Card
Fail Overall Grade
FAIL 
Deleted Reviews
Deleted ReviewsFAIL Rating Trend
Rating TrendFAIL Word Count Comparison
Word Count ComparisonFAIL Phrase Repetition
Phrase RepetitionFAIL Overlapping Review History
Overlapping Review HistoryWARN Suspicious Reviewers
Suspicious ReviewersWARN Reviewer Participation
Reviewer ParticipationPASS Unverified Purchases
Unverified PurchasesPASS Reviewer Ease
Reviewer EasePASS Brand Repeats
Brand RepeatsPASS Incentivized Reviews
Incentivized Reviews
Most Trusted Reviews
One of my favorite movies ever [Go to full review]
May 17, 2020
100%
TRUST
TRUST
-
Unverified Purchaser
Reviewer data not yet gathered.
Least Trusted Reviews
cool [Go to full review]
Nov 16, 2015
0%
TRUST
TRUST
-
Verified Purchaser -
Created on a high volume day -
Overrepresented word count (1 word)
-
Take-Back Reviewer (3 deleted Reviews; avg. rating: 4.3) -
Brand Repeater (2 of 179 reviews for this brand; avg rating: 5.0) -
Overlapping Review History: reviewed 1 of 9 top products -
Critical Reviewer (avg. rating: 4.0)
show)
Analysis Details
Fail Deleted Reviews
Deleted Reviews
We discovered a total of 1,579 deleted Reviews for this product, with an average rating of 4.3. 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.
4.3 average rating of deleted reviews
Fail Rating Trend
Rating Trend
-
- 20%
- Created over 96 days
We counted 3,141 reviews for this product over the span of 6,695 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 96 days exceeding this threshold:In total, we found that 615 reviews were created on just 96 days. The reviews on these high volume days have rated this product an average of 4.7 while reviews from other days 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 Word Count Comparison
Word Count Comparison
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- 38%
- 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 1,185 reviews (or 38%) are within an overrepresented word count group. These reviews have rated this product an average of 4.8, while all other reviews have rated this product an average of 4.4. 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
Phrase Repetition
Reviews that contain one of these phrases are NOT necessarily devalued; read more about how this test works here.
175 of the 3,141 total reviews for this product use substantial repetitive phrases between them. These reviewers have rated this product an average of 4.9 while reviews without substantial repetitive phrases 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 Overlapping Review History
Overlapping Review History
Reviewers of this product have ALSO reviewed the following products:
5% also reviewed:
Harry Potter & the Deathly Hallows, Part 1... by Harry Potter & The Deathly Hallows Pt. 1 3d
4% also reviewed:
Anne of Green Gables (Anne Shirley Series #1) by Lucy Maud Montgomery
4% also reviewed:
Harry Potter and the Goblet of Fire (4) by J. K. Rowling
4% also reviewed:
The Complete Novels of Jane Austen (Knickerbocker... by Jane Austen
2% also reviewed:
A Princess of Mars (Illustrated) by Edgar Rice Burroughs
2% also reviewed:
Amazon Prime Video by Amazon.com
2% also reviewed:
The Hunger Games (Hunger Games Trilogy, Book 1) by Suzanne Collins
2% also reviewed:
The Lord of the Rings: The Fellowship of the Ring by Elijah Wood
Does not include products
from the same brand
from the same brand
359 of the 3,141 reviewers have substantial overlapping product review history. These reviewers have rated this product an average of 4.7 while the reviewers who have a more unique product review history 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 Suspicious Reviewers
Suspicious Reviewers
Take-Back Reviewers
1,129 of the 3,141 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.
Warn Reviewer Participation
Reviewer Participation
-
- 31%
- 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 981 reviewers (or 31%) are within an overrepresented participation group. While this is more reviews from overrepresented participation groups than we'd expect to see, these reviews do not appear to have a significant impact on the overall rating.
Pass Unverified Purchases
Unverified Purchases
243 of the 3,141 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 Reviewer Ease
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 Repeats
Brand Repeaters
675 of the 3,141 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
Incentivized Reviews
On Oct 3, 2016, Amazon prohibited incentivized reviews, however we still test for them since there are still millions in our dataset.
-
- 0%
- Admitted to receiving an incentive
We didn't detect any reviews that used language indicating they were incentivized.
Read more about our Incentivized Reviews test. Check out our study showing that Incentivized Reviewers are much more likely to leave a positive review.
Read more about our Incentivized Reviews test. Check out our study showing that Incentivized Reviewers are much more likely to leave a positive review.