Maymom Breast Pump Reducing Flanges for Ameda Purely Yours Breast Pump, BPA Free, 22 mm - 4 Pack
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Most Trusted Reviews
TRUST
- Verified Purchaser
- Take-Back Reviewer (62 deleted Reviews; avg. rating: 5.0)
- Easy Grader (avg. rating: 5.0)
Least Trusted Reviews
TRUST
- Verified Purchaser
- Overrepresented word count (13 words)
- Contains repetitive phrases (show)
- Single-Day Reviewer (posted all reviews on Apr 12, 2016)
- Overlapping Review History: reviewed 1 of 9 top products
- Overrepresented Participation (posted 6 Reviews)
- Easy Grader (avg. rating: 4.7)
Analysis Details
Take-Back Reviewers
12 of the 74 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.
Single-Day Reviewers
12 of the 74 reviewers have written multiple reviews but posted all of them on a single day. While this is more Single-Day Reviewers than we'd expect to see, the discrepancy in ratings between the Single-Day Reviewers and all other reviewers isn't significant enough to rule out the possibility of it being due to random chance.
8% also reviewed:
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Earth Mama Angel Baby Natural Nipple Butter (Pack... by Earth Mama Angel Baby
4% also reviewed:
Ameda Breast Milk Storage Bottles Includes: (4)... by Ameda
4% also reviewed:
Baby-Led Weaning: The Essential Guide to... by Gill Rapley
4% also reviewed:
Simple Wishes Hands Free Breastpump Bra by Simple Wishes
4% also reviewed:
Ulubulu Universal Pacifier Clip, Oliver Owl by Ulubulu
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WaterWipes Value Baby Wipes by WaterWipes
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Bambo Nature Premium Baby Diapers, Newborn by Bambo Nature
from the same brand
22 of the 74 reviewers have substantial overlapping product review history. These reviewers have rated this product an average of 4.1 while the reviewers who have a more unique product review history rated this product an average of 3.4. 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.
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- 69%
- 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 51 reviewers (or 69%) are within an overrepresented participation group. These reviews have rated this product an average of 3.3, while all other reviews have rated this product an average of 4.3. 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.
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- 31%
- 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 23 reviews (or 31%) are within an overrepresented word count group. While this is more reviews from overrepresented word count groups than we'd expect to see, these reviews do not appear to have a significant impact on the overall rating.
11 of the 74 total reviews for this product use substantial repetitive phrases between them. This is an excessively large percentage which may indicate unnatural reviews.
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- 0%
- Created on high-volume days
Read more about our Rating Trend test.
4 of the 74 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.
4.0 Product's Average Ease Score
4.2 Category's Average Ease Score
Read more about our Reviewer Ease test.
Brand Repeaters
2 of the 74 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.
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- 0%
- Admitted to receiving an incentive
Read more about our Incentivized Reviews test. Check out our study showing that Incentivized Reviewers are much more likely to leave a positive review.
- 0
- Reviews have been deleted
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.