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Amazon.com > Books > Literature & Fiction > Action & Adventure > Mystery, Thriller & Suspense > Thriller & Suspense
Catalyst (Breakthrough Book 3)
More product info
From Michael C. Grumley
This report was last updated 10/24/2020.
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 2,725 Ratings, we counted 2,366 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".
Report Card
Pass Overall Grade
FAIL Phrase Repetition
WARN Deleted Reviews
WARN Rating Trend
WARN Brand Repeats
WARN Suspicious Reviewers
WARN Reviewer Ease
WARN Reviewer Participation
PASS Unverified Purchases
PASS Word Count Comparison
PASS Overlapping Review History
PASS Incentivized Reviews
Most Trusted Reviews
This one returns all your favorite characters and keeps up ... [Go to full review]
Nov 11, 2018
100%
TRUST
TRUST
- Verified Purchaser
- Brand Repeater (4 of 23 reviews for this brand; avg rating: 5.0)
- Critical Reviewer (avg. rating: 4.2)
Least Trusted Reviews
Fabulous third book of a most excellent series...can't wait for ... [Go to full review]
Jan 24, 2016
0%
TRUST
TRUST
- Verified Purchaser
- Created on a high volume day
- Contains repetitive phrases (show)
- Brand Loyalist (5 of 7 reviews for this brand; avg rating: 5.0)
- Overrepresented Participation (posted 7 Reviews)
- Easy Grader (avg. rating: 5.0)
Analysis Details
Fail 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:
Show MoreShow Less
62 reviews
(4.8/5)
(4.8/5)
40 reviews
(5.0/5)
(5.0/5)
132 reviews
(4.9/5)
(4.9/5)
45 reviews
(4.6/5)
(4.6/5)
53 reviews
(4.9/5)
(4.9/5)
42 reviews
(4.9/5)
(4.9/5)
38 reviews
(4.9/5)
(4.9/5)
49 reviews
(4.9/5)
(4.9/5)
24 reviews
(4.9/5)
(4.9/5)
29 reviews
(4.9/5)
(4.9/5)
Common Phrases in Titles:
32 reviews
(4.9/5)
(4.9/5)
354 of the 2,366 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 4.7. 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 Deleted Reviews
We discovered a total of 51 deleted Reviews for this product, with an average rating of 4.7. 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.
Warn Rating Trend
-
- 14%
- Created over 35 days
We counted 2,366 reviews for this product over the span of 1,798 days, an average of 1.3 reviews per day. If these reviews were created randomly, there would be a 99.9% chance that we would see 6 or fewer reviews on any given day.
However, we see the following 35 days exceeding this threshold:In total, we found that 331 reviews were created on just 35 days. Although any days with a larger number of reviews than expected is suspicious, these reviews do not appear to have a significant impact on the overall rating.
Warn Brand Repeats
Brand Repeaters
1,041 of the 2,366 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
92 of the 2,366 reviewers have reviewed multiple products but half or more of their reviews are for this brand. While this is more Brand Loyalists than we'd expect to see, the discrepancy in ratings between the Brand Loyalists and non-loyalists isn't significant enough to rule out the possibility of it being due to random chance.
Warn Suspicious Reviewers
Take-Back Reviewers
752 of the 2,366 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.
Warn 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. 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
4.3 Category's Average Ease Score
Read more about our Reviewer Ease test.
Warn Reviewer Participation
-
- 33%
- 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 782 reviewers (or 33%) 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
987 of the 2,366 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 Overlapping Review History
Reviewers of this product have ALSO reviewed the following products:
4% also reviewed:
Pandemic (The Extinction Files Book 1) by A.G. Riddle
4% also reviewed:
Split Second (Split Second Book 1) by Douglas E. Richards
4% also reviewed:
ICE (Dr. Leah Andrews and Jack Hobson Thrillers... by Kevin Tinto
4% also reviewed:
The Atlantis Plague: A Thriller (The Origin... by A.G. Riddle
3% also reviewed:
CyberStorm: A Novel by Matthew Mather
3% also reviewed:
The Atlantis World (The Origin Mystery, Book 3) by A.G. Riddle
3% also reviewed:
Mind's Eye (Nick Hall Book 1) by Douglas E. Richards
3% also reviewed:
Wired by Douglas E. Richards
Does not include products
from the same brand
from the same brand
496 of the 2,366 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 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.