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Western digital WD4005FZBX Disque Dur Interne 4 to SATA
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From Western Digital
This report was last updated 6/15/2020.
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Fail Overall Grade
FAIL Word Count Comparison
FAIL Phrase Repetition
FAIL Overlapping Review History
PASS Rating Trend
PASS Unverified Purchases
PASS Suspicious Reviewers
PASS Reviewer Participation
PASS Reviewer Ease
PASS Brand Repeats
PASS Incentivized Reviews
PASS Deleted Reviews
Most Trusted Reviews
Disque qui a lâché au bout d'un mois ! Je ... [Go to full review]
Jun 20, 2014
100%
TRUST
TRUST
- Verified Purchaser
- Critical Reviewer (avg. rating: 3.0)
Least Trusted Reviews
Apr 28, 2019
5%
TRUST
TRUST
- Verified Purchaser
- Overrepresented word count (1 word)
- Take-Back Reviewer (2 deleted Reviews; avg. rating: 5.0)
- Overlapping Review History: reviewed 1 of 9 top products
- Easy Grader (avg. rating: 4.6)
Analysis Details
Fail Word Count Comparison
-
- 8%
- 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 16 reviews (or 8%) are within an overrepresented word count group. These reviews have rated this product an average of 4.7, while all other reviews have rated this product an average of 4.0. 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.
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
4 reviews
(5.0/5)
(5.0/5)
4 reviews
(3.8/5)
(3.8/5)
10 reviews
(3.5/5)
(3.5/5)
4 reviews
(5.0/5)
(5.0/5)
9 reviews
(3.7/5)
(3.7/5)
2 reviews
(5.0/5)
(5.0/5)
2 reviews
(2.5/5)
(2.5/5)
6 reviews
(4.3/5)
(4.3/5)
4 reviews
(5.0/5)
(5.0/5)
8 reviews
(4.3/5)
(4.3/5)
73 of the 193 total reviews for this product use substantial repetitive phrases between them. These reviewers have rated this product an average of 4.5 while reviews without substantial repetitive phrases 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.
Fail Overlapping Review History
Reviewers of this product have ALSO reviewed the following products:
4% also reviewed:
Samsung SSD 850 EVO, 1 To - SSD Interne SATA... by Samsung
4% also reviewed:
Corsair Vengeance LPX 32Go (2x16Go) DDR4 3000MHz... by Corsair
3% also reviewed:
SteelSeries by SteelSeries
3% also reviewed:
Lecteur de cartes SD/Micro SD USB 3.0 Blanc... by Transcend
3% also reviewed:
CORSAIR HYDRO Series H150i PRO RGB... by Corsair
3% also reviewed:
Kingston A400 SSD SA400S37/960G - SSD Interne... by Kingston
2% also reviewed:
Logitech M90 Souris Filaire USB, Suivi Optique... by Logitech
2% also reviewed:
Logitech K400 Plus Clavier Sans Fil Touch TV Avec... by Logitech
Does not include products
from the same brand
from the same brand
38 of the 193 reviewers have substantial overlapping product review history. These reviewers have rated this product an average of 4.5 while the reviewers who have a more unique product review history rated this product an average of 4.0. 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.
Pass Rating Trend
-
- 0%
- Created on high-volume days
We counted 193 reviews for this product over the span of 2,327 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. We didn't find any days exceeding this threshold.
Read more about our Rating Trend test.
Read more about our Rating Trend test.
Pass Unverified Purchases
7 of the 193 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 Suspicious Reviewers
One-Hit Wonders
10 of the 193 reviewers have only reviewed this product. This is within an acceptable range and it does not appear to be significantly affecting the overall rating for this product.
Never-Verified Reviewers
3 of the 193 reviewers have never written a verified purchase review. This is within an acceptable range and it does not appear to be significantly affecting the overall rating for this product.
Take-Back Reviewers
28 of the 193 reviewers have had at least one of their past reviews for another product deleted. This is within an acceptable range and it does not appear to be significantly affecting the overall rating for this product.
Single-Day Reviewers
4 of the 193 reviewers have written multiple reviews but posted all of them on a single day. This is within an acceptable range and it does not appear to be significantly affecting the overall rating for this product.
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.
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 4.1, while the average ease score for reviewers in this category is 4. While this discrepancy is rather large, it is not quite large enough to rule out the possibility of it being due random chance.
4.1 Product's Average Ease Score
4.0 Category's Average Ease Score
Read more about our Reviewer Ease test.
Pass Brand Repeats
Brand Repeaters
2 of the 193 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.
-
- 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.