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Amazon.com > Office Products > Office & School Supplies > Printer Ink & Toner > Laser Printer Drums & Toner
INK E-SALE Replacement for CF400X CF401X CF402X CF403X 201X CF400A Toner Cartridge for use with...
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From INK E-SALE
This report was last updated 5/14/2020.
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Report Info:
Note: While Amazon.com claims 711 Ratings, we counted 2,197 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 Rating Trend
FAIL Suspicious Reviewers
WARN Deleted Reviews
WARN Reviewer Participation
PASS Unverified Purchases
PASS Word Count Comparison
PASS Phrase Repetition
PASS Overlapping Review History
PASS Reviewer Ease
PASS Brand Repeats
PASS Incentivized Reviews
Most Trusted Reviews
I really really want to love this toner for the ... [Go to full review]
Apr 8, 2019
100%
TRUST
TRUST
- Verified Purchaser
- Take-Back Reviewer (1 deleted Review; avg. rating: 4.0)
- Easy Grader (avg. rating: 4.4)
Least Trusted Reviews
No problems with compatability with my 320 printer. Ink ... [Go to full review]
Apr 7, 2016
0%
TRUST
TRUST
- Verified Purchaser
- Created on a high volume day
- Take-Back Reviewer (1 deleted Review; avg. rating: 5.0)
- Overrepresented Participation (posted 8 Reviews)
- Easy Grader (avg. rating: 5.0)
Analysis Details
Fail Rating Trend
-
- 13%
- Created over 28 days
We counted 2,197 reviews for this product over the span of 1,598 days, an average of 1.4 reviews per day. If these reviews were created randomly, there would be a 99.9% chance that we would see 7 or fewer reviews on any given day.
However, we see the following 28 days exceeding this threshold:In total, we found that 276 reviews were created on just 28 days. The reviews on these high volume days have rated this product an average of 4.6 while reviews from other days have rated this product an average of 4.1. 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.
Fail Suspicious Reviewers
Take-Back Reviewers
572 of the 2,197 reviewers have had at least one of their past reviews for another product deleted. The Take-Back Reviewers have rated this product an average of 4.4 while the reviewers who don't have any deleted reviews in their history have rated this product an average of 4.1. 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 97 deleted Reviews for this product, with an average rating of 3.8. 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:
- 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 Participation
-
- 68%
- From reviewers with an overrepresented participation
We see the following 2 participation groups with a statistically significant greater concentration than what we'd expect to see:In total, we found that 1494 reviewers (or 68%) are within an overrepresented participation group. This is an excessively high number of reviewers in overrepresented participation groups.
Pass Unverified Purchases
56 of the 2,197 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
Reviews that contain one of these phrases are NOT necessarily devalued; read more about how this test works here.
Common Phrases in Titles:
33 reviews
(4.5/5)
(4.5/5)
5 of the 2,197 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 Overlapping Review History
Reviewers of this product have ALSO reviewed the following products:
1% also reviewed:
Fire TV Stick bundle with Echo Dot (2nd Gen) -... by Amazon
1% also reviewed:
Epson Expression Home XP-420 Wireless Color Photo... by Epson
1% also reviewed:
Amazon Store Card by Synchrony Bank
1% also reviewed:
EPSON T220 DURABrite Ultra -Ink Standard Capacity... by Epson
1% also reviewed:
Certified Refurbished Fire TV Stick with Alexa... by Amazon Renewed
1% also reviewed:
HP LaserJet Pro M277dw Wireless All-in-One Color... by HP
144 of the 2,197 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 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 4.1, while the average ease score for reviewers in this category is 4.3.
4.1 Product's Average Ease Score
4.3 Category's Average Ease Score
Read more about our Reviewer Ease test.
Pass Brand Repeats
Brand Repeaters
21 of the 2,197 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.
7 of the 2,197 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.