Close
Amazon.com > Electronics > Headphones, Earbuds & Accessories > Headphones & Earbuds > Earbud Headphones
Etymotic Research ER6 Isolator In-Ear Earphones (Black) (Discontinued by Manufacturer)
More product info
From Etymotic Research
This report was last updated 4/30/2017.
Refresh the report to view the most up-to-date data available:
Refresh the report to view the most up-to-date data available:
View/Edit Adjustment
Jump to Report Card
Report Info:
Last Updated: Apr 30, 2017
Refresh Report
Refresh Report
Note: We only analyze "reviews" and ignore one-tap "ratings".
Report Card
Warn Overall Grade
FAIL Suspicious Reviewers
FAIL Overlapping Review History
WARN Unverified Purchases
WARN Phrase Repetition
WARN Reviewer Participation
PASS Rating Trend
PASS Word Count Comparison
PASS Reviewer Ease
PASS Brand Repeats
PASS Incentivized Reviews
PASS Deleted Reviews
Most Trusted Reviews
Purchased for ipod and sound is incredible, coaution these earplugs ... [Go to full review]
Mar 15, 2007
100%
TRUST
TRUST
- Verified Purchaser
- Easy Grader (avg. rating: 5.0)
Least Trusted Reviews
the length of the cord is too long and if ... [Go to full review]
Jan 21, 2007
0%
TRUST
TRUST
- Unverified Purchaser
- Contains repetitive phrases (show)
- One-Hit Wonder
- Never-Verified Reviewer
- Critical Reviewer (avg. rating: 4.0)
Analysis Details
Fail Suspicious Reviewers
One-Hit Wonders
20 of the 164 reviewers have only reviewed this product. The One-Hit Wonders have rated this product an average of 3.0 while the reviewers who have posted more than one review have rated this product an average of 3.9. 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.
Never-Verified Reviewers
54 of the 164 reviewers have never written a verified purchase review. While this is more Never-Verified Reviewers than we'd expect to see, it does not appear to have a significant impact on the overall rating.
Take-Back Reviewers
16 of the 164 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, the discrepancy in ratings between the Take-Back Reviewers and reviewers who don't have any deleted reviews in their history isn't significant enough to rule out the possibility of it being due to random chance.
Fail Overlapping Review History
Reviewers of this product have ALSO reviewed the following products:
2% also reviewed:
Coast HP2 Focusing LED Inspection Light by Coast
2% also reviewed:
Shure E2 Sound Isolating Earphones by Shure
2% also reviewed:
Terk HDTVAZ Amplified Indoor HDTV Antenna by Terk
2% also reviewed:
OXO Good Grips Silicone Sink Strainer, Black by OXO
2% also reviewed:
Neutrogena Ultra Sheer Dry-Touch Water Resistant... by Neutrogena
2% also reviewed:
The Grand Tour Season 1 by Jeremy Clarkson
24 of the 164 reviewers have substantial overlapping product review history. These reviewers have rated this product an average of 4.3 while the reviewers who have a more unique product review history rated this product an average of 3.7. 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 Unverified Purchases
103 of the 164 total reviews for this product are unverified purchases. While this is a higher percentage of unverified purchases than we'd expect to see, it does not appear to have a significant impact on the overall rating.
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.
Warn Phrase Repetition
Reviews that contain one of these phrases are NOT necessarily devalued; read more about how this test works here.
57 of the 164 total reviews for this product use substantial repetitive phrases between them. This is an excessively large percentage which may indicate unnatural reviews.
Warn Reviewer Participation
-
- 46%
- 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 76 reviewers (or 46%) are within an overrepresented participation group. While this is more reviews from overrepresented participation groups than we'd expect to see, the discrepancy in ratings between reviewers in an overrepresented participation groups and all other reviewers isn’t significant enough to rule out the possibility of it being due to random chance.
Pass Rating Trend
-
- 2%
- Created over 1 day
We counted 164 reviews for this product over the span of 4,085 days, an average of 0.0 reviews per day. If these reviews were created randomly, there would be a 99.9% chance that we would see 2 or fewer reviews on any given day.
However, we see the following 1 day exceeding this threshold:In total, we found that 3 reviews were created on just 1 day. This is within an acceptable range and it does not appear to be significantly affecting the overall rating for this product.
Pass Word Count Comparison
-
- 26%
- 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 43 reviews (or 26%) are within an overrepresented word count group. 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 3.9, while the average ease score for reviewers in this category is 4.1.
3.9 Product's Average Ease Score
4.1 Category's Average Ease Score
Read more about our Reviewer Ease test.
Pass Brand Repeats
Brand Repeaters
3 of the 164 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.
-
- 0%
- Admitted to receiving an incentive
We didn't detect any reviews that used language indicating they were incentivized.
Read more about our Incentivized Reviews test. Check out our study showing that Incentivized Reviewers are much more likely to leave a positive review.
Read more about our Incentivized Reviews test. Check out our study showing that Incentivized Reviewers are much more likely to leave a positive review.
Pass Deleted Reviews
- 0
- Reviews have been deleted
We have not discovered any deleted reviews for this product.
There are a few limitations to keep in mind regarding the Deleted Reviews test:
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.