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Zibra Open-It ZPCOPEN-GZ 5-in-1 Package Opener
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From Zibra Open-It
This report was last updated 6/12/2019.
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Refresh the report to view the most up-to-date data available:
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Report Info:
Note: While Amazon.com claims 1,004 Ratings, we counted 1,149 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 Suspicious Reviewers
WARN Deleted Reviews
WARN Rating Trend
WARN Reviewer Ease
PASS Unverified Purchases
PASS Word Count Comparison
PASS Phrase Repetition
PASS Overlapping Review History
PASS Reviewer Participation
PASS Brand Repeats
PASS Incentivized Reviews
Most Trusted Reviews
I have had these for 9 years. I use them ... [Go to full review]
Oct 30, 2017
100%
TRUST
TRUST
- Unverified Purchaser
- Take-Back Reviewer (5 deleted Reviews; avg. rating: 3.4)
- Critical Reviewer (avg. rating: 3.1)
Least Trusted Reviews
I am really glad I bought it. It would be ... [Go to full review]
Apr 21, 2016
15%
TRUST
TRUST
- Unverified Purchaser
- One-Hit Wonder
- Never-Verified Reviewer
- Take-Back Reviewer (3 deleted Reviews; avg. rating: 5.0)
- Easy Grader (avg. rating: 5.0)
Analysis Details
Fail Suspicious Reviewers
Never-Verified Reviewers
8 of the 1,149 reviewers have never written a verified purchase review. The Never-Verified Reviewers have rated this product an average of 2.9 while the reviewers who have written at least one verified purchase review rated this product an average of 4.4. 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.
Take-Back Reviewers
437 of the 1,149 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.
Warn Deleted Reviews
We discovered a total of 3 deleted Reviews for this product, with an average rating of 4.3. 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
-
- 6%
- Created over 17 days
We counted 1,149 reviews for this product over the span of 3,257 days, an average of 0.4 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 17 days exceeding this threshold:In total, we found that 74 reviews were created on just 17 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.
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 4.3, 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.
4.3 Product's Average Ease Score
4.3 Category's Average Ease Score
Read more about our Reviewer Ease test.
Pass Unverified Purchases
66 of the 1,149 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
-
- 0%
- Used substantial repetitive phrases
0 of the 1,149 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.
Read more about our Phrase Repetition test.
Read more about our Phrase Repetition test.
Pass Overlapping Review History
Reviewers of this product have ALSO reviewed the following products:
1% also reviewed:
niceEshop Professional 15 Color Concealer... by niceeshop
1% also reviewed:
Contour Effects Palette by City Color Cosmetics
1% also reviewed:
Anastasia Beverly Hills DIPBROW - Color - Ebony... by Cydraend
1% also reviewed:
BS-MALL Makeup Brushes Premium Makeup Brush Set... by BS-MALL
1% also reviewed:
L.A. Girl Pro Conceal 969 Porcelain by L.A. Girl
Does not include products
from the same brand
from the same brand
92 of the 1,149 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 Reviewer Participation
-
- 0%
- From reviewers with an overrepresented participation
We didn't find any participation groups that had a statistically significant greater concentration than what we'd expect to see in this category.
Read more about our Reviewer Participation test.
Read more about our Reviewer Participation test.
Pass Brand Repeats
Brand Repeaters
14 of the 1,149 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.
1 of the 1,149 total reviews for this product admitted to receiving a free or discounted product in exchange for a review. This is within an acceptable range and it does not appear to be significantly affecting the overall rating for this product.
Read more about our Incentivized Reviews test. Check out our study showing that Incentivized Reviewers are much more likely to leave a positive review.