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MAM Gift Set, Best Pacifiers and Baby Bottles for Newborn Breastfed Babies, "Feed &...
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From MAM
This report was last updated 10/13/2020.
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Report Info:
Note: While Amazon.com claims 3,142 Ratings, we counted 1,314 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
Warn Overall Grade
FAIL Suspicious Reviewers
FAIL Phrase Repetition
FAIL Overlapping Review History
WARN Deleted Reviews
WARN Reviewer Participation
PASS Rating Trend
PASS Unverified Purchases
PASS Word Count Comparison
PASS Reviewer Ease
PASS Brand Repeats
PASS Incentivized Reviews
Most Trusted Reviews
No gas, no fuss. Just be sure the bottoms are ... [Go to full review]
Aug 29, 2014
100%
TRUST
TRUST
- Verified Purchaser
- Take-Back Reviewer (2 deleted Reviews; avg. rating: 3.5)
- Critical Reviewer (avg. rating: 3.9)
Least Trusted Reviews
My baby is exclusively breastfed, we only use bottles once ... [Go to full review]
Sep 20, 2016
0%
TRUST
TRUST
- Verified Purchaser
- Single-Day Reviewer (posted all reviews on Sep 20, 2016)
- Take-Back Reviewer (1 deleted Review; avg. rating: 5.0)
- Overlapping Review History: reviewed 1 of 9 top products
- Easy Grader (avg. rating: 4.8)
Analysis Details
Fail Suspicious Reviewers
Take-Back Reviewers
454 of the 1,314 reviewers have had at least one of their past reviews for another product deleted. While this is more Take-Back Reviewers than we'd expect to see, it does not appear to have a significant impact on the overall rating.
Single-Day Reviewers
49 of the 1,314 reviewers have written multiple reviews but posted all of them on a single day. The Single-Day reviewers have rated this product an average of 4.9 while all other reviewers rated this product an average of 4.6. 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 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:
Show MoreShow Less
61 reviews
(4.7/5)
(4.7/5)
27 reviews
(4.9/5)
(4.9/5)
30 reviews
(4.7/5)
(4.7/5)
32 reviews
(5.0/5)
(5.0/5)
24 reviews
(4.7/5)
(4.7/5)
29 reviews
(4.9/5)
(4.9/5)
Common Phrases in Titles:
46 reviews
(4.6/5)
(4.6/5)
28 reviews
(4.9/5)
(4.9/5)
27 reviews
(4.7/5)
(4.7/5)
88 of the 1,314 total reviews for this product use substantial repetitive phrases between them. These reviewers have rated this product an average of 4.9 while reviews without substantial repetitive phrases rated this product an average of 4.6. 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 Overlapping Review History
Reviewers of this product have ALSO reviewed the following products:
2% also reviewed:
Huggies Little Movers Baby Diapers, Size 3, 162... by HUGGIES
2% also reviewed:
DII Classic Buffalo Check Tabletop Collection for... by DII
2% also reviewed:
SoundHealth Extra Strength Heartburn &... by SoundHealth
2% also reviewed:
DII Oversize Woven Paper Storage Basket or Bin,... by DII
1% also reviewed:
DII 100% Cotton, Quilted Terry Oven Set Machine... by DII
Does not include products
from the same brand
from the same brand
119 of the 1,314 reviewers have substantial overlapping product review history. These reviewers have rated this product an average of 4.8 while the reviewers who have a more unique product review history rated this product an average of 4.6. 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 15 deleted Reviews for this product, with an average rating of 5. 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
-
- 57%
- 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 750 reviewers (or 57%) are within an overrepresented participation group. This is an excessively high number of reviewers in overrepresented participation groups.
Pass Rating Trend
-
- 3%
- Created over 8 days
We counted 1,314 reviews for this product over the span of 2,696 days, an average of 0.5 reviews per day. If these reviews were created randomly, there would be a 99.9% chance that we would see 4 or fewer reviews on any given day.
However, we see the following 8 days exceeding this threshold:In total, we found that 42 reviews were created on just 8 days. This is within an acceptable range and it does not appear to be significantly affecting the overall rating for this product.
Pass Unverified Purchases
73 of the 1,314 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 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 4.4, 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.
4.4 Product's Average Ease Score
4.3 Category's Average Ease Score
Read more about our Reviewer Ease test.
Pass Brand Repeats
Brand Repeaters
115 of the 1,314 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 1,314 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.