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Amazon.com > Home & Kitchen > Kitchen & Dining > Kitchen Utensils & Gadgets > Kitchen Knives & Accessories > Asian Knives
SHI BA ZI ZUO 7 Inch Chinese Kitchen Knife Vegetable Knife Professional Chef Knife with Stainless...
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From SHI BA ZI ZUO
This report was last updated 2/12/2023.
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 264 Ratings, we counted 61 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
Deleted Reviews

WARN
Reviewer Ease

WARN
Word Count Comparison

WARN
Reviewer Participation

PASS
Rating Trend

PASS
Unverified Purchases

PASS
Phrase Repetition

PASS
Suspicious Reviewers

PASS
Overlapping Review History

PASS
Brand Repeats

PASS
Incentivized Reviews

Most Trusted Reviews
Purchased for my wife. It’s nicely engineered and beautiful. However, ... [Go to full review]
Dec 25, 2020
100%
TRUST
TRUST
-
Verified Purchaser
-
Critical Reviewer (avg. rating: 4.1)
Least Trusted Reviews
It's a great knife to the price you pay [Go to full review]
Dec 9, 2019
38%
TRUST
TRUST
-
Verified Purchaser
-
Overrepresented word count (9 words)
-
Overrepresented Participation (posted 5 Reviews)
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Easy Grader (avg. rating: 4.8)
Analysis Details
Fail
Deleted Reviews

We discovered a total of 14 deleted Reviews for this product, with an average rating of 4.1. 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
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 4.4. 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
4.4 Category's Average Ease Score
Read more about our Reviewer Ease test.
Warn
Word Count Comparison

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- 61%
- 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 2 groups with a statistically significant greater concentration than what we'd expect to see:In total, we found that 37 reviews (or 61%) are within an overrepresented word count group. This is an excessively high number of reviews in overrepresented word count groups.
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 20 reviewers (or 33%) are within an overrepresented participation group. While this is more reviews from overrepresented participation groups than we'd expect to see, the discrepancy in ratings between reviewers in an overrepresented participation groups and all other reviewers isn’t significant enough to rule out the possibility of it being due to random chance.
Pass
Rating Trend

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- 0%
- Created on high-volume days
We counted 61 reviews for this product over the span of 1,200 days, an average of 0.1 reviews per day. If these reviews were created randomly, there would be a 99.9% chance that we would see 2 or fewer reviews on any given day. We didn't find any days exceeding this threshold.
Read more about our Rating Trend test.
Read more about our Rating Trend test.
Pass
Unverified Purchases

1 of the 61 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
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:
2 reviews
(4.5/5)
(4.5/5)
2 reviews
(3.0/5)
(3.0/5)
4 of the 61 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
Suspicious Reviewers

One-Hit Wonders
2 of the 61 reviewers have only reviewed this product. This is within an acceptable range and it does not appear to be significantly affecting the overall rating for this product.
Never-Verified Reviewers
We didn't detect a substantial amount of Never-Verified Reviewers.
Take-Back Reviewers
15 of the 61 reviewers have had at least one of their past reviews for another product deleted. This is within an acceptable range and it does not appear to be significantly affecting the overall rating for this product.
Single-Day Reviewers
1 of the 61 reviewers have written multiple reviews but posted all of them on a single day. 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:
3% also reviewed:
Nail Tek Crystal File Double-Sided with Fuchsia... by Nail Tek
3% also reviewed:
Corsair ML140 Pro, 140mm Premium Magnetic... by Corsair
3% also reviewed:
Artizen Citronella Essential Oil (100% Pure... by Artizen
3% also reviewed:
Zojirushi SM-SE48AL Stainless Steel Vacuum... by Zojirushi
3% also reviewed:
WUUK Smart Video Doorbell Camera wi-fi with... by WUUK
Does not include products
from the same brand
from the same brand
8 of the 61 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
2 of the 61 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.