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Notice: There are more than 10,000 reviews for this product. Unfortunately Amazon won't actually show us (or anyone) more than 10,000 reviews. We'll do our best, but this report might not be quite right since Amazon has blocked access to some of the data.
SanDisk 512GB Ultra MicroSDXC UHS-I Memory Card with Adapter - 100MB/s, C10, U1, Full HD, A1, Micro...
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Report Info:
Note: While Amazon.ca claims 601,723 Ratings, we counted 11,769 Reviews available on their site.
Note: We only analyze "reviews" and ignore one-tap "ratings".
Note: We only analyze "reviews" and ignore one-tap "ratings".
Top products in Micro SD Cards with authentic reviews:
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Pass Overall Grade
FAIL 
Suspicious Reviewers
Suspicious ReviewersFAIL Phrase Repetition
Phrase RepetitionFAIL Overlapping Review History
Overlapping Review HistoryWARN Deleted Reviews
Deleted ReviewsWARN Rating Trend
Rating TrendPASS Unverified Purchases
Unverified PurchasesPASS Word Count Comparison
Word Count ComparisonPASS Reviewer Participation
Reviewer ParticipationPASS Reviewer Ease
Reviewer EasePASS Brand Repeats
Brand RepeatsPASS Incentivized Reviews
Incentivized Reviews
Most Trusted Reviews
I'm going to end up buying another one. I'm using ... [Go to full review]
Aug 23, 2013
100%
TRUST
TRUST
-
Verified Purchaser
-
Take-Back Reviewer (1 deleted Review; avg. rating: 1.0) -
Critical Reviewer (avg. rating: 4.1)
Least Trusted Reviews
Slow asf on my samsung s9 and my nintendo switch [Go to full review]
Nov 28, 2018
0%
TRUST
TRUST
-
Verified Purchaser
-
Created on a high volume day -
Contains repetitive phrases (
show)
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One-Hit Wonder -
Critical Reviewer (avg. rating: 1.0)
Analysis Details
Fail Suspicious Reviewers
Suspicious Reviewers
One-Hit Wonders
462 of the 11,769 reviewers have only reviewed this product. The One-Hit Wonders have rated this product an average of 3.9 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.
Fail Phrase Repetition
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:
309 reviews
(4.7/5)
(4.7/5)
Common Phrases in Titles:
186 reviews
(4.9/5)
(4.9/5)
295 of the 11,769 total reviews for this product use substantial repetitive phrases between them. These reviewers have rated this product an average of 4.9 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.
Fail Overlapping Review History
Overlapping Review History
Reviewers of this product have ALSO reviewed the following products:
4% also reviewed:
Wyze Cam v2 1080p HD Smart Home Camera with Night... by Wyze Labs
3% also reviewed:
AmazonBasics AA 1.5 Volt Performance Alkaline... by AmazonBasics
2% also reviewed:
AmazonBasics High-Speed HDMI Cable by AmazonBasics
2% also reviewed:
Fire TV Stick 4K streaming device with Alexa... by Amazon
2% also reviewed:
Seagate Backup Plus Slim Portable Hard Drive with... by Seagate
2% also reviewed:
AmazonBasics AA NiMH Pre-Charged Rechargeable... by Amazon Basics
2% also reviewed:
Tank-L Parent by Amazon
1% also reviewed:
Echo Dot (3rd Gen) - Smart speaker with Alexa -... by Amazon
1% also reviewed:
AmazonBasics Lightning to USB A Cable - MFi... by AmazonBasics
1,960 of the 11,769 reviewers have substantial overlapping product review history. These reviewers have rated this product an average of 4.8 while the reviewers who have a more unique product review history 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.
Warn Deleted Reviews
Deleted Reviews
We discovered a total of 149 deleted Reviews for this product, with an average rating of 3.3. 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.
3.3 average rating of deleted reviews
Warn Rating Trend
Rating Trend
-
- 50%
- Created over 310 days
We counted 11,769 reviews for this product over the span of 2,746 days, an average of 4.3 reviews per day. If these reviews were created randomly, there would be a 99.9% chance that we would see 13 or fewer reviews on any given day.
However, we see the following 310 days exceeding this threshold:In total, we found that 5,861 reviews were created on just 310 days. This is an excessively high number of reviews submitted on these high volume days.
Pass Unverified Purchases
Unverified Purchases
315 of the 11,769 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 Word Count Comparison
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 Participation
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.
Read more about our Reviewer Participation test.
Pass Reviewer Ease
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 4.5, while the average ease score for reviewers in this category is 4.4. While this discrepancy is rather large, it is not quite large enough to rule out the possibility of it being due random chance.
4.5 Product's Average Ease Score
4.4 Category's Average Ease Score
Read more about our Reviewer Ease test.
Pass Brand Repeats
Brand Repeats
Brand Repeaters
914 of the 11,769 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
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.