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Amazon.com > Industrial & Scientific > Test, Measure & Inspect > Substance Analysis Instrumentation > pH Testing > pH Meters
Yeslike Digital PH Meter, PH Meter 0.01 PH High Accuracy Water Quality Tester with 0-14 PH...
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This report was last updated 3/7/2019.
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Report Info:
Note: We only analyze "reviews" and ignore one-tap "ratings".
Report Card
Fail Overall Grade
FAIL Suspicious Reviewers
FAIL Reviewer Ease
WARN Unverified Purchases
WARN Phrase Repetition
WARN Overlapping Review History
WARN Reviewer Participation
PASS Rating Trend
PASS Word Count Comparison
PASS Brand Repeats
PASS Incentivized Reviews
PASS Deleted Reviews
Most Trusted Reviews
We couldn't find any quality reviewsLeast Trusted Reviews
Great for the money! Works just as well as higher ... [Go to full review]
Mar 1, 2019
0%
TRUST
TRUST
- Unverified Purchaser
- Contains repetitive phrases (show)
- Take-Back Reviewer (171 deleted Reviews; avg. rating: 5.0)
- Overlapping Review History: reviewed 3 of 9 top products
- Overrepresented Participation (posted 218 Reviews)
- Easy Grader (avg. rating: 5.0)
Analysis Details
Fail Suspicious Reviewers
One-Hit Wonders
32 of the 122 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.
Never-Verified Reviewers
95 of the 122 reviewers have never written a verified purchase review. This is an excessively large percentage of Never-Verified Reviewers which may indicate unnatural reviews.
Take-Back Reviewers
9 of the 122 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.
Single-Day Reviewers
62 of the 122 reviewers have written multiple reviews but posted all of them on a single day. This is an excessively large percentage of Single-Day Reviewers which may indicate unnatural reviews.
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 4.8, 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.
4.8 Product's Average Ease Score
4.3 Category's Average Ease Score
Read more about our Reviewer Ease test.
Warn Unverified Purchases
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- 100%
- Unverified Purchases
122 of the 122 total reviews for this product are unverified purchases. This is an excessively large percentage of unverified purchases and it may indicate 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.
Warn Phrase Repetition
Reviews that contain one of these phrases are NOT necessarily devalued; read more about how this test works here.
62 of the 122 total reviews for this product use substantial repetitive phrases between them. This is an excessively large percentage which may indicate unnatural reviews.
Warn Overlapping Review History
Reviewers of this product have ALSO reviewed the following products:
751% also reviewed:
Wireless Earbuds, 3D Stereo Sound Wireless... by ABCShopUSA
401% also reviewed:
OLINKIT 4.7-Inch 3-Pack Screen Protector... by OLINKIT
278% also reviewed:
Loopilops Samsung Galaxy S8 Screen Protector 3D... by Loopilops
209% also reviewed:
Micro USB Android Cell Phone Adaptive Fast Charger by Aukiss
128% also reviewed:
BBInfinite Cable Clear Compatible White Phone... by BBInfinite
95% also reviewed:
Wireless Earbuds, Bluetooth Headphones Stereo... by TOKI
94% also reviewed:
[2-Pack] Screen Protector,Tempered Glass Screen... by Fitquipment
Does not include products
from the same brand
from the same brand
122 of the 122 reviewers have substantial overlapping product review history. This is an excessively large percentage which may indicate unnatural reviews.
Warn Reviewer Participation
-
- 80%
- From reviewers with an overrepresented participation
We see the following 2 participation groups with a statistically significant greater concentration than what we'd expect to see:In total, we found that 98 reviewers (or 80%) are within an overrepresented participation group. This is an excessively high number of reviewers in overrepresented participation groups.
Pass Rating Trend
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- 0%
- Created on high-volume days
We counted 122 reviews for this product over the span of 1 days, an average of 122.0 reviews per day. If these reviews were created randomly, there would be a 99.9% chance that we would see 122 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 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 Brand Repeats
Brand Repeaters
We didn't detect a substantial amount of Brand Repeaters.
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.
1 of the 122 total reviews for this product admitted to receiving a free or discounted product in exchange for a review. 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 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.