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[OLD MODEL] Crucial m4 512GB 2.5-Inch (9.5mm) SATA 6Gb/s Solid State Drive CT512M4SSD2
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![[OLD MODEL] Crucial m4 512GB 2.5-Inch (9.5mm) SATA 6Gb/s Solid State Drive CT512M4SSD2](https://reviewmeta.com/secure_img/?url=http%3A%2F%2Fecx.images-amazon.com%2Fimages%2FI%2F418US3d0RAL.jpg)
This report was last updated 11/14/2018.
Refresh the report to view the most up-to-date data available:
Refresh the report to view the most up-to-date data available:
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Note: We only analyze "reviews" and ignore one-tap "ratings".
Top products in Internal Solid State Drives with authentic reviews:
Report Card
Pass Overall Grade
FAIL 
Unverified Purchases
Unverified PurchasesFAIL Suspicious Reviewers
Suspicious ReviewersFAIL Overlapping Review History
Overlapping Review HistoryWARN Deleted Reviews
Deleted ReviewsWARN Rating Trend
Rating TrendPASS Word Count Comparison
Word Count ComparisonPASS Phrase Repetition
Phrase RepetitionPASS Reviewer Participation
Reviewer ParticipationPASS Reviewer Ease
Reviewer EasePASS Brand Repeats
Brand RepeatsPASS Incentivized Reviews
Incentivized Reviews
Most Trusted Reviews
Has been very durable [Go to full review]
May 28, 2018
100%
TRUST
TRUST
-
Verified Purchaser
-
Critical Reviewer (avg. rating: 4.3)
Least Trusted Reviews
Great SSD to put your OS on and a couple ... [Go to full review]
Aug 2, 2013
0%
TRUST
TRUST
-
Unverified Purchaser -
Overrepresented word count (106 words)
-
Never-Verified Reviewer -
Single-Day Reviewer (posted all reviews on Aug 2, 2013) -
Easy Grader (avg. rating: 5.0)
Analysis Details
Fail Unverified Purchases
Unverified Purchases
174 of the 2,316 total reviews for this product are unverified purchases. The unverified purchasers have rated this product an average of 3.6 while the verified purchasers have rated this product an average of 4.5. 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 Suspicious Reviewers
Suspicious Reviewers
Take-Back Reviewers
356 of the 2,316 reviewers have had at least one of their past reviews for another product deleted. This is an excessively large percentage of Take-Back Reviewers which may indicate unnatural reviews.
Single-Day Reviewers
43 of the 2,316 reviewers have written multiple reviews but posted all of them on a single day. The Single-Day reviewers have rated this product an average of 4.9 while all other reviewers rated this product an average of 4.4. 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:
3% also reviewed:
Silverstone Tek Ultra Thin Lateral 90 Degree SATA... by SilverStone Technology
3% also reviewed:
(Old Model) Seagate 5TB Desktop HDDSATA 6Gb/s NCQ... by Seagate
2% also reviewed:
SanDisk Ultra microSDHC Card Plus Adapter by SanDisk
2% also reviewed:
ARRIS SURFboard SB6141 8x4 DOCSIS 3.0 Cable... by ARRIS
2% also reviewed:
ZXUY Hard Drive SATA 2nd HDD Caddy Tray for... by ZXUY
2% also reviewed:
Cooler Master Hyper 212 Turbo- Red Top Cover is... by Cooler Master
2% also reviewed:
Mediabridge HDMI Cable (25 Feet) Supports... by Mediabridge
2% also reviewed:
Apricorn SATA Wire Notebook Hard Drive Upgrade... by Apricorn
2% also reviewed:
Transcend 8 GB Class 10 SDHC Flash Memory Card by Transcend
370 of the 2,316 reviewers have substantial overlapping product review history. These reviewers have rated this product an average of 4.6 while the reviewers who have a more unique product review history rated this product an average of 4.4. 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 62 deleted Reviews for this product, with an average rating of 4.7. 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.
4.7 average rating of deleted reviews
Warn Rating Trend
Rating Trend
-
- 16%
- Created over 57 days
We counted 2,316 reviews for this product over the span of 2,727 days, an average of 0.8 reviews per day. If these reviews were created randomly, there would be a 99.9% chance that we would see 5 or fewer reviews on any given day.
However, we see the following 57 days exceeding this threshold:In total, we found that 379 reviews were created on just 57 days. This is an excessively high number of reviews submitted on these high volume days.
Pass Word Count Comparison
Word Count Comparison
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- 19%
- 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 430 reviews (or 19%) 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 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:
Show MoreShow Less
46 reviews
(4.6/5)
(4.6/5)
68 reviews
(4.0/5)
(4.0/5)
36 reviews
(4.4/5)
(4.4/5)
25 reviews
(5.0/5)
(5.0/5)
27 reviews
(4.8/5)
(4.8/5)
Common Phrases in Titles:
94 reviews
(4.5/5)
(4.5/5)
34 of the 2,316 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 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 4.2, while the average ease score for reviewers in this category is 4.3.
4.2 Product's Average Ease Score
4.3 Category's Average Ease Score
Read more about our Reviewer Ease test.
Pass Brand Repeats
Brand Repeats
Brand Repeaters
265 of the 2,316 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.