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Mpow H19 IPO Active Noise Cancelling Headphones, Wireless Over Ear Bluetooth Headphones with CVC...
More product info From Mpow

Review Hijacking Alert!
6 reviews are coming from a seemingly different product variation:

Mpow Portable Battery Case for Bluetooth Headphones Rechargeable Universal Protective Carrying Case... (Example Review )



Learn more about Review Hijacking.
Amazon Reviews for  Mpow H19 IPO Active Noise Cancelling Headphones, Wireless Over Ear Bluetooth Headphones with CVC 8.0 Mic,Hi-Fi Deep Bass, Fast Charge, 35H Playtime,Comfortable Fit for Home Office, Travel
Rating:
12,360 Ratings
5,143 Reviews
("Ratings" vs. "Reviews")
87% of potentially unnatural reviews removed (why?)
Adjusted:
View/Edit Adjustment
Jump to Report Card
Report Info:
Last Updated: Apr 8, 2021
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Show Report History
Note: While Amazon.com claims 12,360 Ratings, we counted 5,143 Reviews available on their site.
Note: We only analyze "reviews" and ignore one-tap "ratings".

Report Card

Fail Overall Grade
FAIL Rating Trend
FAIL Incentivized Reviews
FAIL Suspicious Reviewers
FAIL Reviewer Ease
FAIL Word Count Comparison
FAIL Phrase Repetition
FAIL Reviewer Participation
WARN Deleted Reviews
WARN Brand Repeats
PASS Unverified Purchases
PASS Overlapping Review History

Most Trusted Reviews

5/5
Mar 9, 2021      
100% TRUST
  • Verified Purchaser
  • Take-Back Reviewer (1 deleted Review; avg. rating: 5.0)
  • Easy Grader (avg. rating: 4.4)


Least Trusted Reviews

These headphones are Great to cancel out the noise and ... [Go to full review]
Aug 12, 2020      
0% TRUST
  • Verified Purchaser
  • Created on a high volume day
  • Overrepresented word count (14 words)
  • Contains repetitive phrases (show)
  • Overrepresented Participation (posted 2 Reviews)
  • Easy Grader (avg. rating: 5.0)


Analysis Details

Fail Rating Trend

  • 61%
  • Created over 154 days

We counted 5,143 reviews for this product over the span of 1,330 days, an average of 3.9 reviews per day. If these reviews were created randomly, there would be a 99.9% chance that we would see 12 or fewer reviews on any given day.

However, we see the following 154 days exceeding this threshold:In total, we found that 3,154 reviews were created on just 154 days. The reviews on these high volume days have rated this product an average of 4.7 while reviews from other days have rated this product an average of 4.5. 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.

from reviews created on high volume days

from reviews created on normal volume days


4.7
4.5


Read more about our Rating Trend test.

Fail Incentivized Reviews
On Oct 3, 2016, Amazon prohibited incentivized reviews, however we still test for them since there are still millions in our dataset.


3 of the 5,143 total reviews for this product admitted to receiving a free or discounted product in exchange for a review. Incentivized reviews have rated this product an average of 3.3 while reviews that were not incentivized 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.

from incentivized reviews

from non-incentivized reviews


3.3
4.6


Read more about our Incentivized Reviews test. Check out our study showing that Incentivized Reviewers are much more likely to leave a positive review.

Fail Suspicious Reviewers

One-Hit Wonders


893 of the 5,143 reviewers have only reviewed this product. The One-Hit Wonders have rated this product an average of 4.7 while the reviewers who have posted more than one review have 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.

from one-hit wonders

from reviewers with more than one review


4.7
4.6


Read more about our Suspicious Reviewers test.

Fail 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. 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.

4.4 Product's Average Ease Score

4.3 Category's Average Ease Score


4.4
4.3


Read more about our Reviewer Ease test.


Fail Word Count Comparison

  • 22%
  • 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 1,156 reviews (or 22%) are within an overrepresented word count group. These reviews have rated this product an average of 4.8, while all other reviews have 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.

from reviews with an overrepresented word count

from reviews with a properly represented word count


4.8
4.6


Read more about our Word Count Comparison test.

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:
232 reviews
(4.6/5)
204 reviews
(4.7/5)
391 reviews
(4.6/5)
157 reviews
(4.6/5)
143 reviews
(4.7/5)
62 reviews
(4.8/5)
95 reviews
(4.8/5)
156 reviews
(4.6/5)
83 reviews
(4.8/5)
54 reviews
(4.6/5)
Show MoreShow Less
Common Phrases in Titles:
131 reviews
(4.4/5)
226 reviews
(4.9/5)
67 reviews
(4.4/5)
249 reviews
(4.9/5)
Show MoreShow Less


732 of the 5,143 total reviews for this product use substantial repetitive phrases between them. These reviewers have rated this product an average of 4.7 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.

from reviews with substantial repetitive phrases

from reviews without substantial repetitive phrases


4.7
4.6


Read more about our Phrase Repetition test.

Fail Reviewer Participation

  • 50%
  • 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 2597 reviewers (or 50%) are within an overrepresented participation group. These reviews have rated this product an average of 4.7, while all other reviews have rated this product an average of 4.5. 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.

From reviewers with an overrepresented participation

From reviewers with a properly represented participation


4.7
4.5


Read more about our Reviewer Participation test.

Warn Deleted Reviews

We discovered a total of 87 deleted Reviews for this product, with an average rating of 4.5. 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:
  1. 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.
  2. We have no information on reviews that were never published in the first place.
  3. 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.
Read more about our Deleted Reviews test.

4.5 average rating of deleted reviews

4.5


Show distribution of deleted reviews

Warn Brand Repeats

Brand Loyalists


107 of the 5,143 reviewers have reviewed multiple products but half or more of their reviews are for this brand. While this is more Brand Loyalists than we'd expect to see, the discrepancy in ratings between the Brand Loyalists and non-loyalists isn't significant enough to rule out the possibility of it being due to random chance.

from Brand Loyalists

from Non-Loyalists


4.7
4.6


Read more about our Brand Repeats test.

Pass Unverified Purchases

457 of the 5,143 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.

from unverified purchasers

from verified purchases


4.5
4.6


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 Overlapping Review History
  • 0%
  • Substantial overlapping review history
0 of the 5,143 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.
Read more about our Overlapping Review History test.