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Kershaw Blur Tanto Black Serrated Pocket Knife (1670TBLKST); 3.4 inch Cerakote Finish Blade,...
More product info From Kershaw

Amazon Reviews for  Kershaw Blur Tanto Black Serrated Pocket Knife (1670TBLKST); 3.4 inch Cerakote Finish Blade, Sandvik 14C28N Steel, Partially Serrated Blade; SpeedSafe Opening, Reversible Pocketclip
Rating:
1,479 Ratings
("Ratings" vs. "Reviews")
0% of potentially unnatural reviews removed (why?)
Adjusted:
1,479 Ratings*




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Jump to Report Card

Report Info:

Report Card

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

Most Trusted Reviews

This is a great pocket knife. I lost my first ... [Go to full review]
Oct 30, 2020      
100% TRUST
  • Verified Purchaser
  • Overrepresented word count (202 words)
  • Take-Back Reviewer (1 deleted Review; avg. rating: 2.0)
  • Critical Reviewer (avg. rating: 3.9)


Least Trusted Reviews

Awesome knife! Will be looking for another edc knife soon ... [Go to full review]
Jul 13, 2014      
31% TRUST
  • Verified Purchaser
  • Contains repetitive phrases (show)
  • Take-Back Reviewer (2 deleted Reviews; avg. rating: 5.0)
  • Overrepresented Participation (posted 8 Reviews)
  • Critical Reviewer (avg. rating: 4.3)


Analysis Details

Fail Deleted Reviews

We discovered a total of 13 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:
  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 our Deleted Reviews test.

4.8 average rating of deleted reviews

4.8


Show distribution of deleted reviews

Fail Suspicious Reviewers

Take-Back Reviewers


Approximately 50% of 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.

from take-back reviewers

from reviewers without previously deleted reviews


4.8
4.7


Read more about our Suspicious Reviewers test.

Pass Rating Trend
  • <10%
  • Created on high-volume days
We didn't notice any signals that would indicate reviews were created unevenly over time.
Read more about our Rating Trend test.

Pass Unverified Purchases

108 of the 1,479 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


4.6
4.8


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

  • ~25%
  • 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 approximately 25% 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


4.8
4.7


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:
~3% of reviews
(5.0/5)
~7% of reviews
(4.8/5)
~3% of reviews
(5.0/5)
~3% of reviews
(5.0/5)
~3% of reviews
(5.0/5)
~3% of reviews
(5.0/5)
~3% of reviews
(5.0/5)
~3% of reviews
(5.0/5)
~3% of reviews
(5.0/5)
~3% of reviews
(5.0/5)
Show MoreShow Less
Common Phrases in Titles:
~6% of reviews
(5.0/5)
~3% of reviews
(5.0/5)
~3% of reviews
(5.0/5)


Approximately 15% of reviews 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


4.6
4.8


Read more about our Phrase Repetition test.

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

<10% also reviewed:
Smith's Abrasives PP1... by Smith's

Does not include products
from the same brand


Approximately 20% of 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
4.8


Read more about our Overlapping Review History test.

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 4.3, while the average ease score for reviewers in this category is 4.3.

4.3 Product's Average Ease Score

4.3 Category's Average Ease Score


4.3
4.3


Read more about our Reviewer Ease test.


Pass Brand Repeats

Brand Repeaters


Approximately 15% of 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


5.0
4.7


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.

  • <10%
  • 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.

N/A Reviewer Participation
We haven't collected sufficient data to run this test yet. more info


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