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Oz: Season 5 [DVD]
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From Paramount Home Entertainment
This report was last updated 10/4/2017.
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Report Info:
Last Updated: Oct 4, 2017
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Note: We only analyze "reviews" and ignore one-tap "ratings".
Report Card
Pass Overall Grade
FAIL
Brand Repeats

FAIL
Suspicious Reviewers

WARN
Reviewer Participation

PASS
Rating Trend

PASS
Unverified Purchases

PASS
Word Count Comparison

PASS
Phrase Repetition

PASS
Overlapping Review History

PASS
Reviewer Ease

PASS
Incentivized Reviews

PASS
Deleted Reviews

Most Trusted Reviews
another superb series, bought series one because I found it ... [Go to full review]
Mar 3, 2009 2 of 3 found this helpful.
100%
TRUST
TRUST
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Verified Purchaser
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Take-Back Reviewer (6 deleted Reviews; avg. rating: 5.0)
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Overlapping Review History: reviewed 1 of 9 top products
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Easy Grader (avg. rating: 4.8)
Least Trusted Reviews
A classic show. Thoroughly enjoying watching. [Go to full review]
Sep 20, 2014
10%
TRUST
TRUST
-
Verified Purchaser
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Single-Day Reviewer (posted all reviews on Sep 20, 2014)
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Brand Loyalist (3 of 6 reviews for this brand; avg rating: 5.0)
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Overrepresented Participation (posted 6 Reviews)
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Easy Grader (avg. rating: 4.7)
Analysis Details
Fail
Brand Repeats

Brand Repeaters
8 of the 20 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.
Brand Loyalists
1 of the 20 reviewers have reviewed multiple products but half or more of their reviews are for this brand. This is an excessively large percentage of Brand Loyalists which may indicate unnatural reviews.
Fail
Suspicious Reviewers

Take-Back Reviewers
2 of the 20 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.
Warn
Reviewer Participation

-
- 40%
- 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 8 reviewers (or 40%) are within an overrepresented participation group. While this is more reviews from overrepresented participation groups than we'd expect to see, the discrepancy in ratings between reviewers in an overrepresented participation groups and all other reviewers isn’t significant enough to rule out the possibility of it being due to random chance.
Pass
Rating Trend

-
- 0%
- Created on high-volume days
We counted 20 reviews for this product over the span of 3,154 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. We didn't find any days exceeding this threshold.
Read more about our Rating Trend test.
Read more about our Rating Trend test.
Pass
Unverified Purchases

3 of the 20 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
Word Count Comparison

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- 0%
- Have an overrepresented word count
We didn't find any review word count groups that had a statistically significant greater concentration than what we'd expect to see in this category.
Read more about our Word Count Comparison test.
Read more about our Word Count Comparison test.
Pass
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:
2 reviews
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- 0%
- Used substantial repetitive phrases
0 of the 20 total reviews for this product use substantial repetitive phrases between them. 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 Phrase Repetition test.
Read more about our Phrase Repetition test.
Pass
Overlapping Review History

Reviewers of this product have ALSO reviewed the following products:
15% also reviewed:
Band Of Brothers - The Complete Series... by Ron Livingston
10% also reviewed:
French for Business: STUDENTS BOOK, 5ED: Support... by Lucette Barbarin
10% also reviewed:
The Food of India: A Journey for Food Lovers... by Murdoch Books
10% also reviewed:
The Shirley Temple Collection 3 DVD Set [2007] by Elstree Hill
10% also reviewed:
Sons of Anarchy - Season 1 [DVD] by 20th Century Fox Home Entertainment
10% also reviewed:
Belle [DVD] [2013] by 20th Century Fox Home Entertainment
10% also reviewed:
Gears of War: Ultimate Edition (Xbox One) by Microsoft
Does not include products
from the same brand
from the same brand
6 of the 20 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 4.5, while the average ease score for reviewers in this category is 4.4. While this discrepancy is rather large, it is not quite large enough to rule out the possibility of it being due random chance.
4.5 Product's Average Ease Score
4.4 Category's Average Ease Score
Read more about our Reviewer Ease test.
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.
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- 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.
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.