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TopCase Sleeve Bag Cover Case for ALL Laptop 13" 13 inch Macbook Pro/ Macbook Unibody / Macbook Air...
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This report was last updated 9/15/2017.
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Last Updated: Sep 15, 2017
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Note: We only analyze "reviews" and ignore one-tap "ratings".
Report Card
Warn Overall Grade
FAIL Brand Repeats
FAIL Word Count Comparison
FAIL Overlapping Review History
WARN Rating Trend
WARN Suspicious Reviewers
WARN Reviewer Participation
PASS Unverified Purchases
PASS Phrase Repetition
PASS Reviewer Ease
PASS Incentivized Reviews
PASS Deleted Reviews
Most Trusted Reviews
I wanted a light sleeve to add additional padding for ... [Go to full review]
Jun 22, 2017
100%
TRUST
TRUST
- Verified Purchaser
- Take-Back Reviewer (4 deleted Reviews; avg. rating: 5.0)
- Brand Repeater (2 of 102 reviews for this brand; avg rating: 4.5)
- Easy Grader (avg. rating: 4.6)
Least Trusted Reviews
i love it...it is very good ,i like its colour ... [Go to full review]
Oct 2, 2013
0%
TRUST
TRUST
- Verified Purchaser
- Created on a high volume day
- Overrepresented word count (24 words)
- Single-Day Reviewer (posted all reviews on Oct 2, 2013)
- Brand Monogamist (2 of 2 reviews for this brand; avg rating: 4.0)
- Overrepresented Participation (posted 2 Reviews)
- Critical Reviewer (avg. rating: 4.0)
Analysis Details
Fail Brand Repeats
Brand Loyalists
60 of the 1,050 reviewers have reviewed multiple products but half or more of their reviews are for this brand. This is an excessively large percentage of Brand Loyalists which may indicate unnatural reviews.
Brand Monogamists
24 of the 1,050 reviewers have reviewed multiple products, but only for this brand. This is an excessively large percentage of Brand Monogamists which may indicate unnatural reviews.
Fail Word Count Comparison
-
- 52%
- 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 2 groups with a statistically significant greater concentration than what we'd expect to see:In total, we found that 546 reviews (or 52%) are within an overrepresented word count group. These reviews have rated this product an average of 4.1, while all other reviews have rated this product an average of 3.8. 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:
Regular Keyboard cover for MacBook Variation by Kuzy
2% also reviewed:
GMYLE MacBook Pro 13 Inch Case (Model: A1278)... by GMYLE
1% also reviewed:
GMYLE Turquoise Robin Egg Blue Keyboard Cover for... by GMYLE
1% also reviewed:
UPPERCASE Ultra Thin Clear Soft TPU Keyboard... by UPPERCASE
1% also reviewed:
iPearl mCover Hard Shell Case with FREE keyboard... by mCover®
1% also reviewed:
Tree MacBook Decal Mac Apple skin sticker by Yadda-Yadda Design Co.
1% also reviewed:
Kuzy Older Version Case Compatible with MacBook... by Kuzy
Does not include products
from the same brand
from the same brand
106 of the 1,050 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 3.9. 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.
Warn Rating Trend
-
- 5%
- Created over 10 days
We counted 1,050 reviews for this product over the span of 1,803 days, an average of 0.6 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 10 days exceeding this threshold:In total, we found that 53 reviews were created on just 10 days. Although any days with a larger number of reviews than expected is suspicious, these reviews do not appear to have a significant impact on the overall rating.
Warn Suspicious Reviewers
One-Hit Wonders
141 of the 1,050 reviewers have only reviewed this product. While this is more One-Hit Wonders than we'd expect to see, it does not appear to have a significant impact on the overall rating.
Take-Back Reviewers
73 of the 1,050 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.
Single-Day Reviewers
201 of the 1,050 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, it does not appear to have a significant impact on the overall rating.
Warn Reviewer Participation
-
- 48%
- 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 501 reviewers (or 48%) 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 Unverified Purchases
53 of the 1,050 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 Phrase Repetition
Reviews that contain one of these phrases are NOT necessarily devalued; read more about how this test works here.
17 of the 1,050 total reviews for this product use substantial repetitive phrases between them. 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 4.1, while the average ease score for reviewers in this category is 4.2.
4.1 Product's Average Ease Score
4.2 Category's Average Ease Score
Read more about our Reviewer Ease test.
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.