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BLITZ 64GB Micro SD SDXC Class 10 Memory Card with Adapter From Blitz Report Feedback

Fail Unnatural reviews detected

Original:

49 Reviews

Adjusted:

39 Reviews

Rank in: Electronics
2%
2%

View/Edit Adjustment
How is this calculated
Last Updated: 3/6/2017
Update Available
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Report Card

Click a test to jump to details

FAIL Deleted Reviews
FAIL Suspicious Reviewers
FAIL Overlapping Review History
PASS Rating Trend
PASS Unverified Purchases
PASS Word Count Comparison
PASS Phrase Repetition
PASS Reviewer Participation
PASS Reviewer Ease
PASS Brand Repeats
PASS Skewed Helpfulness
PASS Incentivized Reviews
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Most Trusted Reviews

Works as it should. [Go to full review]
Oct 13, 2016      
100% TRUST
  • Verified Purchaser
  • Easy Grader (avg. rating: 4.7)


Least Trusted Reviews

1/5
Corrupted within the first week do not buy! [Go to full review]
Aug 18, 2016      
30% TRUST
  • Verified Purchaser
  • Contains repetitive phrases (show)
  • Overlapping Review History: reviewed 1 of 9 top products
  • Critical Reviewer (avg. rating: 3.8)


Analysis Details

Note: While Amazon claims 49 reviews, we counted 47 available on their site.

Fail Deleted Reviews

We discovered a total of 222 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.

5.0 average rating of deleted reviews

5.0



Read more about our Deleted Reviews test.

Fail Suspicious Reviewers

Take-Back Reviewers


20 of the 47 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 2.9 while the reviewers who don't have any deleted reviews in their history have rated this product an average of 1.9. 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.

from take-back reviewers

from reviewers without previously deleted reviews


2.9
1.9


Read more about our Suspicious Reviewers test.

Fail Overlapping Review History
Does not include products
from the same brand


13 of the 47 reviewers have substantial overlapping product review history. These reviewers have rated this product an average of 3.1 while the reviewers who have a more unique product review history rated this product an average of 2.0. 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.

from reviewers with substantial overlapping history

from reviewers without a substantial overlapping history


3.1
2.0


Read more about our Overlapping Review History test.

Pass Rating Trend

  • 0%
  • Created over 7 days
We counted 47 reviews for this product over the span of 144 days, an average of 0.3 reviews per day. If these reviews were created randomly, there would be a 99.9% chance that we would see 3 or fewer reviews on any given day.

However, we see the following 7 days exceeding this threshold:In total, we found that 0 reviews were created on just 7 days. 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 Unverified Purchases

5 of the 47 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


1.0
2.5


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.

Pass 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:
2 reviews
(4.3%)
2 reviews
(4.3%)
2 reviews
(4.3%)
Common Phrases in Titles:
2 reviews
(4.3%)
2 reviews
(4.3%)


3 of the 47 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.

from reviews with substantial repetitive phrases

from reviews without substantial repetitive phrases


1.0
2.4


Read more about our Phrase Repetition test.

Pass Reviewer Participation

  • 0%
  • From reviewers with an overrepresented participation
We didn't find any participation groups that had a statistically significant greater concentration than what we'd expect to see in this category.
Read more about our Reviewer Participation 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 3.8, while the average ease score for reviewers in this category is 4.2.

3.8 Product's Average Ease Score

4.2 Category's Average Ease Score


3.8
4.2


Read more about our Reviewer Ease test.


Pass Brand Repeats

Brand Repeaters

We didn't detect a substantial amount of Brand Repeaters.

Pass Skewed Helpfulness
We examined the average net helpfulness score of negative reviews against the average net helpfulness score of positive reviews. The net helpfulness score is the number of times a review has been marked as helpful minus the number of times a review has been marked as unhelpful. We could not find any statistically significant difference in average net helpfulness score between the negative reviews and positive reviews.

0.0 average net helpfulness for positive reviews

-4.3 average net helpfulness for negative reviews


Read more about our Skewed Helpfulness 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, or check out our study showing that Incentivized Reviewers are much more likely to leave a positive review.