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Doctor Who Confidential: End of Time, Part 2
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From BBC
This report was last updated 2/20/2019.
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Report Info:
Note: While Amazon.com claims 918 Ratings, we counted 780 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
FAIL Suspicious Reviewers
FAIL Reviewer Ease
WARN Rating Trend
WARN Reviewer Participation
PASS Unverified Purchases
PASS Word Count Comparison
PASS Phrase Repetition
PASS Overlapping Review History
PASS Brand Repeats
PASS Incentivized Reviews
Most Trusted Reviews
Epic, awesome, and true Who. There's no 'cutting' of scenes ... [Go to full review]
Jul 17, 2017
100%
TRUST
TRUST
- Verified Purchaser
- Take-Back Reviewer (82 deleted Reviews; avg. rating: 3.6)
- Critical Reviewer (avg. rating: 3.8)
Least Trusted Reviews
Great episodes by Dr. Who played by David Tennant. One ... [Go to full review]
Jul 15, 2016
0%
TRUST
TRUST
- Verified Purchaser
- Created on a high volume day
- Take-Back Reviewer (1 deleted Review; avg. rating: 5.0)
- Overrepresented Participation (posted 16 Reviews)
- Easy Grader (avg. rating: 5.0)
Analysis Details
Fail Deleted Reviews
We discovered a total of 160 deleted Reviews for this product, with an average rating of 4.8. 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.
Fail Suspicious Reviewers
Take-Back Reviewers
151 of the 780 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.
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 4.3. 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.
Warn Rating Trend
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- 24%
- Created over 34 days
We counted 780 reviews for this product over the span of 3,058 days, an average of 0.3 reviews per day. If these reviews were created randomly, there would be a 99.9% chance that we would see 3 or fewer reviews on any given day.
However, we see the following 34 days exceeding this threshold:In total, we found that 187 reviews were created on just 34 days. This is an excessively high number of reviews submitted on these high volume days.
Warn Reviewer Participation
-
- 59%
- 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 457 reviewers (or 59%) are within an overrepresented participation group. This is an excessively high number of reviewers in overrepresented participation groups.
Pass Unverified Purchases
255 of the 780 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
-
- 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.
45 of the 780 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.
Pass Overlapping Review History
Reviewers of this product have ALSO reviewed the following products:
15% also reviewed:
A First Look by Steven Moffat
13% also reviewed:
The Christmas Invasion by BBC
11% also reviewed:
Doctor Who: The Complete Third Series by Warner Home Video
9% also reviewed:
Doctor Who: Season 8 [Blu-ray] by Warner Manufacturing
8% also reviewed:
Doctor Who Season 6 by Steven Moffat
8% also reviewed:
Doctor Who: The Christmas Specials by Steven Moffat
7% also reviewed:
Doctor Who 50th Anniversary: The Day of the Doctor by Steven Moffat
6% also reviewed:
Doctor Who Season 7, Pt. 2 by Marcus Wilson
4% also reviewed:
Asylum of the Daleks by Steven Moffat
302 of the 780 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 Brand Repeats
Brand Repeaters
79 of the 780 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
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.