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KOMPUTERBAY 512MB DDR SODIMM (200 pin) 266Mhz DDR266 PC2100 LAPTOP MEMORY
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This report was last updated 4/26/2017.
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Report Info:
Last Updated: Apr 26, 2017
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Note: We only analyze "reviews" and ignore one-tap "ratings".
Report Card
Pass Overall Grade
FAIL
Reviewer Ease

FAIL
Phrase Repetition

WARN
Rating Trend

WARN
Suspicious Reviewers

WARN
Word Count Comparison

WARN
Reviewer Participation

PASS
Unverified Purchases

PASS
Overlapping Review History

PASS
Brand Repeats

PASS
Incentivized Reviews

PASS
Deleted Reviews

Most Trusted Reviews
Memory did not work in my Dell Inspiron 8200 laptop ... [Go to full review]
Apr 26, 2012
100%
TRUST
TRUST
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Verified Purchaser
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Take-Back Reviewer (1 deleted Review; avg. rating: 2.0)
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Critical Reviewer (avg. rating: 2.0)
Least Trusted Reviews
Received the parts quickly. Plugged them into the rather picky ... [Go to full review]
Oct 6, 2011
0%
TRUST
TRUST
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Verified Purchaser
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Created on a high volume day
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Overrepresented word count (28 words)
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Contains repetitive phrases (
show)
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One-Hit Wonder
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Easy Grader (avg. rating: 5.0)
Analysis Details
Fail
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 4.4, while the average ease score for reviewers in this category is 4.3. 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.
4.4 Product's Average Ease Score
4.3 Category's Average Ease Score
Read more about our Reviewer Ease test.
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
15 reviews
6 reviews
20 reviews
7 reviews
6 reviews
3 reviews
4 reviews
4 reviews
3 reviews
8 reviews
42 of the 340 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.
Warn
Rating Trend

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- 9%
- Created over 9 days
We counted 340 reviews for this product over the span of 2,524 days, an average of 0.1 reviews per day. If these reviews were created randomly, there would be a 99.9% chance that we would see 2 or fewer reviews on any given day.
However, we see the following 9 days exceeding this threshold:In total, we found that 29 reviews were created on just 9 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
37 of the 340 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
24 of the 340 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, it does not appear to have a significant impact on the overall rating.
Warn
Word Count Comparison

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- 48%
- 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 162 reviews (or 48%) are within an overrepresented word count group. While this is more reviews from overrepresented word count groups than we'd expect to see, these reviews do not appear to have a significant impact on the overall rating.
Warn
Reviewer Participation

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- 53%
- 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 181 reviewers (or 53%) are within an overrepresented participation group. This is an excessively high number of reviewers in overrepresented participation groups.
Pass
Unverified Purchases

11 of the 340 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
Overlapping Review History

Reviewers of this product have ALSO reviewed the following products:
2% also reviewed:
OXO Good Grips Professional 8-Inch Chef's... by OXO
2% also reviewed:
High Speed HDMI Cable (1.5 Feet) With Ethernet -... by C&E
2% also reviewed:
Sandisk Extreme Pro 64 GB Class 10 UHS-I 95 Mbps... by SanDisk
1% also reviewed:
ASUS N900 WiFi Router (RT-N66U) - Dual Band... by ASUS
1% also reviewed:
Arctic Silver 5 AS5-3.5G Thermal Paste by Arctic Silver
1% also reviewed:
WD Bare Drives WD Blue SATA III 5400 RPM 8 MB... by Western Digital
37 of the 340 reviewers have substantial overlapping product review history. This is within an acceptable range and it does not appear to be significantly affecting the overall rating for this product.
Pass
Brand Repeats

Brand Repeaters
6 of the 340 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

On Oct 3, 2016, Amazon prohibited incentivized reviews, however we still test for them since there are still millions in our dataset.
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- 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.