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Omega Force: The Enemy Within (OF4)
More product info From Joshua Dalzelle Report Feedback


Rating:
347 Reviews
56% of potentially unnatural reviews removed (Why?)
Adjusted:
View/Edit Adjustment
Jump to Report Card

Report Card

Fail Overall Grade
FAIL Brand Repeats
FAIL Reviewer Ease
WARN Rating Trend
WARN Suspicious Reviewers
WARN Word Count Comparison
WARN Reviewer Participation
PASS Unverified Purchases
PASS Phrase Repetition
PASS Overlapping Review History
PASS Incentivized Reviews
PASS Deleted Reviews

Most Trusted Reviews

As Josh said that he found the books fun to ... [Go to full review]
Apr 8, 2015      
100% TRUST
  • Verified Purchaser
  • Take-Back Reviewer (4 deleted reviews; avg. rating: 4.5)
  • Critical Reviewer (avg. rating: 4.0)


Least Trusted Reviews

I just love these books. [Go to full review]
Apr 22, 2015      
0% TRUST
  • Verified Purchaser
  • Created on a high volume day
  • Overrepresented word count (5 words)
  • Brand Monogamist (3 of 3 reviews for this brand; avg rating: 5.0)
  • Overrepresented Participation (posted 3 reviews)
  • Easy Grader (avg. rating: 5.0)


Analysis Details

Fail Brand Repeats

Brand Repeaters


204 of the 347 reviewers have reviewed other products for this brand. While this is more Brand Repeaters than we'd expect to see, it does not appear to have a significant impact on the overall rating.

from Brand Repeaters

from Non-Repeaters


4.6
4.6


Brand Loyalists


21 of the 347 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.

from Brand Loyalists

from Non-Loyalists


4.8
4.6


Read more about our Brand Repeats test.

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 4.4, 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.

4.4 Product's Average Ease Score

4.2 Category's Average Ease Score


4.4
4.2


Read more about our Reviewer Ease test.


Warn Rating Trend

  • 8%
  • Created over 6 days

We counted 347 reviews for this product over the span of 1,114 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 6 days exceeding this threshold:In total, we found that 27 reviews were created on just 6 days. Although any days with a larger number of reviews than expected is suspicious, the discrepancy in ratings from reviews created on these high volume days and reviews created on other days isn't significant enough to rule out the possibility of it being due to random chance.

from reviews created on high volume days

from reviews created on normal volume days


4.7
4.6


Read more about our Rating Trend test.

Warn Suspicious Reviewers

Take-Back Reviewers


26 of the 347 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


4.6
4.6


Read more about our Suspicious Reviewers test.

Warn Word Count Comparison

  • 59%
  • 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 3 groups with a statistically significant greater concentration than what we'd expect to see:In total, we found that 204 reviews (or 59%) are within an overrepresented word count group. This is an excessively high number of reviews in overrepresented word count groups.

from reviews with an overrepresented word count

from reviews with a properly represented word count


4.6
4.6


Read more about our Word Count Comparison test.

Warn Reviewer Participation

  • 70%
  • From reviewers with an overrepresented participation

We see the following 3 participation groups with a statistically significant greater concentration than what we'd expect to see:In total, we found that 242 reviewers (or 70%) 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


4.6
4.6


Read more about our Reviewer Participation test.

Pass Unverified Purchases

22 of the 347 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


4.7
4.6


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 Phrase Repetition
Reviews that contain one of these phrases are NOT necessarily devalued; read more about how this test works here.

Common Phrases in Titles:
7 reviews
3 reviews


46 of the 347 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


4.7
4.6


Read more about our Phrase Repetition test.

Pass Overlapping Review History
Reviewers of this product have ALSO reviewed the following products:



145 of the 347 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


4.7
4.6


Read more about our Overlapping Review History 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.

There are a few limitations to keep in mind regarding the Deleted Reviews test:
  1. 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.
  2. We have no information on reviews that were never published in the first place.
  3. 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.
Read more about the Deleted Reviews test here.


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