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Christmas at Downton Abbey (PAL)(REGION 2)(MUST HAVE AN ALL REGION PLAYER TO VIEW)

Pass Reviews appear natural

Original:

22,834 Reviews

Adjusted:

18,956 Reviews

Rank in: Movies
100%
100%

View/Edit Adjustment
How is this calculated
Report Last Updated: Jul 7, 2017
Update Available
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Report Card

Click a test to jump to details

FAIL Reviewer Ease
FAIL Skewed Helpfulness
WARN Rating Trend
WARN Suspicious Reviewers
WARN Reviewer Participation
PASS Unverified Purchases
PASS Word Count Comparison
PASS Phrase Repetition
PASS Overlapping Review History
PASS Brand Repeats
PASS Incentivized Reviews
PASS Deleted Reviews
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Most Trusted Reviews

We couldn't find any quality reviews

Least Trusted Reviews

We couldn't find any low-quality reviews

Analysis Details

Note: While Amazon claims 22,834 reviews, we counted 22,823 available on their site.

Fail 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 4.2. 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

4.2 Category's Average Ease Score


4.5
4.2


Read more about our Reviewer Ease test.


Fail Skewed Helpfulness
We examined the average net helpfulness score of negative reviews against the average net helpfulness score of positive reviews. The net helpfulness score is the number of times a review has been marked as helpful minus the number of times a review has been marked as unhelpful. We found that the negative reviews had an average net helpfulness score of -2.9 while the positive reviews had an average net helpfulness score of 0.2. Based on our statistical modeling, this discrepancy is significant enough to believe that the difference is not due to random chance, but possibly due to influence of unnatural voting patterns.

Example critical reviews

0.2 average net helpfulness for positive reviews

-2.9 average net helpfulness for negative reviews


Read more about our Skewed Helpfulness test.


Warn Rating Trend

  • 46%
  • Created over 232 days

We counted 22,823 reviews for this product over the span of 2,083 days, an average of 11.0 reviews per day. If these reviews were created randomly, there would be a 99.9% chance that we would see 23 or fewer reviews on any given day.

However, we see the following 232 days exceeding this threshold:In total, we found that 10,492 reviews were created on just 232 days. This is an excessively high number of reviews submitted on these high volume days.

from reviews created on high volume days

from reviews created on normal volume days


4.9
4.9


Read more about our Rating Trend test.

Warn Suspicious Reviewers

Take-Back Reviewers


978 of the 22,823 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, it does not appear to have a significant impact on the overall rating.

from take-back reviewers

from reviewers without previously deleted reviews


4.9
4.9


Read more about our Suspicious Reviewers test.

Warn Reviewer Participation

  • 84%
  • 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 19103 reviewers (or 84%) are within an overrepresented participation group. This is an excessively high number of reviewers in overrepresented participation groups.

From reviewers with an overrepresented participation

From reviewers with a properly represented participation


4.9
4.9


Read more about our Reviewer Participation test.

Pass Unverified Purchases

9,079 of the 22,823 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.

from unverified purchasers

from verified purchases


4.9
4.9


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

  • 28%
  • 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 6,452 reviews (or 28%) 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.

from reviews with an overrepresented word count

from reviews with a properly represented word count


4.9
4.9


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:
348 reviews
(1.5%)
Common Phrases in Titles:
308 reviews
(1.3%)
340 reviews
(1.5%)
345 reviews
(1.5%)
382 reviews
(1.7%)
Show MoreShow Less


571 of the 22,823 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.

from reviews with substantial repetitive phrases

from reviews without substantial repetitive phrases


4.9
4.9


Read more about our Phrase Repetition test.

Pass Overlapping Review History
Does not include products
from the same brand


11,105 of the 22,823 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.

from reviewers with substantial overlapping history

from reviewers without a substantial overlapping history


4.9
4.9


Read more about our Overlapping Review History test.

Pass Brand Repeats

Brand Repeaters


84 of the 22,823 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.

from Brand Repeaters

from Non-Repeaters


4.8
4.9


Read more about our Brand Repeats 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.

  • 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, or 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.
Read more about our Deleted Reviews test.


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