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LifeSky Stainless Steel Insulated Travel Coffee Mug, 16 oz (16oz, Black Lid)
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From LIFE SKY
This report was last updated 11/2/2019.
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Report Info:
Note: While Amazon.com claims 589 Ratings, we counted 729 Reviews available on their site.
Note: While we've examined all 729 reviews, our reviewer analysis is based on a sample of 727 reviewers.
Note: We only analyze "reviews" and ignore one-tap "ratings".
Note: While we've examined all 729 reviews, our reviewer analysis is based on a sample of 727 reviewers.
Note: We only analyze "reviews" and ignore one-tap "ratings".
Report Card
Pass Overall Grade
FAIL Deleted Reviews
FAIL Unverified Purchases
FAIL Incentivized Reviews
FAIL Suspicious Reviewers
FAIL Phrase Repetition
FAIL Overlapping Review History
WARN Reviewer Participation
PASS Rating Trend
PASS Word Count Comparison
PASS Reviewer Ease
PASS Brand Repeats
Most Trusted Reviews
This coffee thermos/ container keeps the coffee real hot. Love ... [Go to full review]
Feb 24, 2018
100%
TRUST
TRUST
- Verified Purchaser
- Take-Back Reviewer (1 deleted Review; avg. rating: 5.0)
- Easy Grader (avg. rating: 4.9)
Least Trusted Reviews
Length:: 1:50 Mins This is a review of the Lifesky ... [Go to full review]
Apr 18, 2015 48 of 53 found this helpful.
0%
TRUST
TRUST
- Unverified Purchaser
- Admitted to receiving an incentive
- Take-Back Reviewer (389 deleted Reviews; avg. rating: 4.0)
- Overlapping Review History: reviewed 1 of 9 top products
- Critical Reviewer (avg. rating: 4.1)
Analysis Details
Fail Deleted Reviews
We discovered a total of 41 deleted Reviews for this product, with an average rating of 4.4. 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.
Fail Unverified Purchases
86 of the 729 total reviews for this product are unverified purchases. The unverified purchasers have rated this product an average of 4.5 while the verified purchasers 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.
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.
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.
13 of the 729 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 4.9 while reviews that were not incentivized 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.
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
Take-Back Reviewers
234 of a random sample of 727 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 4.0. 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
39 reviews
(4.7/5)
(4.7/5)
19 reviews
(4.7/5)
(4.7/5)
14 reviews
(4.7/5)
(4.7/5)
19 reviews
(4.8/5)
(4.8/5)
36 of the 729 total reviews for this product use substantial repetitive phrases between them. These reviewers have rated this product an average of 4.8 while reviews without substantial repetitive phrases 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 Overlapping Review History
Reviewers of this product have ALSO reviewed the following products:
2% also reviewed:
Fire TV Stick bundle with Echo Dot (2nd Gen) -... by Amazon
1% also reviewed:
LifeSky Insulated Travel Coffee Mug, Stainless... by LifeSky
1% also reviewed:
Certified Refurbished Fire TV Stick with Alexa... by Amazon Renewed
1% also reviewed:
Amazon Prime Video by Amazon.com
Does not include products
from the same brand
from the same brand
39 of a random sample of 727 reviewers have substantial overlapping product review history. These reviewers have rated this product an average of 4.7 while the reviewers who have a more unique product review history 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 Reviewer Participation
-
- 33%
- 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 242 reviewers (or 33%) are within an overrepresented participation group. While this is more reviews from overrepresented participation groups than we'd expect to see, these reviews do not appear to have a significant impact on the overall rating.
Pass Rating Trend
-
- 0%
- Created over 1 day
We counted 729 reviews for this product over the span of 1,748 days, an average of 0.4 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 1 day exceeding this threshold:In total, we found that 0 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.
Read more about our Rating Trend test.
However, we see the following 1 day exceeding this threshold:In total, we found that 0 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.
Read more about our Rating Trend 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 4.1, 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
24 of a random sample of 727 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.