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HDS-TEK HDS-LED-W Decorative Solar Powered Christmas Lights 200 LED String Light for Garden, Lawn,...
More product info From HDS-TEK


Rating:
229 Reviews
94% of potentially unnatural reviews removed (Why?)
Adjusted:
View/Edit Adjustment
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Report Info:
Last Updated: Oct 25, 2016
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Note: While Amazon.com claims 229 reviews, we counted 406 available on their site.
Note: While we've examined all 406 reviews, our reviewer analysis is based on a sample of 70 reviewers.
Note: We only analyze "reviews" and ignore one-tap "ratings".

Report Card

Fail Overall Grade
FAIL Unverified Purchases
FAIL Incentivized Reviews
FAIL Reviewer Ease
FAIL Phrase Repetition
FAIL Overlapping Review History
WARN Word Count Comparison
PASS Rating Trend
PASS Suspicious Reviewers
PASS Reviewer Participation
PASS Brand Repeats
PASS Deleted Reviews

Most Trusted Reviews

Right outta the box started working. 2 hours later when ... [Go to full review]
Apr 21, 2016     0 of 3 found this helpful.  
100% TRUST
  • Verified Purchaser
  • Take-Back Reviewer (3 deleted reviews; avg. rating: 2.7)
  • Critical Reviewer (avg. rating: 3.8)


Least Trusted Reviews

These lights are AWESOME! Sure, each light individually is tiny, ... [Go to full review]
Jan 16, 2016     1 of 1 found this helpful.  
0% TRUST
  • Unverified Purchaser
  • Overrepresented word count (144 words)
  • Admitted to receiving an incentive
  • Contains repetitive phrases (show)
  • Take-Back Reviewer (1212 deleted reviews; avg. rating: 4.6)
  • Overrepresented Participation (posted 1532 reviews)
  • Critical Reviewer (avg. rating: 4.3)


Analysis Details

Fail Unverified Purchases

377 of the 406 total reviews for this product are unverified purchases. The unverified purchasers have rated this product an average of 4.8 while the verified purchasers have rated this product an average of 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.

from unverified purchasers

from verified purchases


4.8
4.3


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


318 of the 406 total reviews for this product admitted to receiving a free or discounted product in exchange for a review. Incentivized reviews have rated this product an average of 4.8 while reviews that were not incentivized 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.

from incentivized reviews

from non-incentivized reviews


4.8
4.6


Read more about our Incentivized Reviews test, or check out our study showing that Incentivized Reviewers are much more likely to leave a positive review.

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 4.5, 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.

4.5 Product's Average Ease Score

4.3 Category's Average Ease Score


4.5
4.3


Read more about our Reviewer Ease test.


Fail Phrase Repetition


265 of the 406 total reviews for this product use substantial repetitive phrases between them. These reviewers have rated this product an average of 4.8 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.

from reviews with substantial repetitive phrases

from reviews without substantial repetitive phrases


4.8
4.6


Read more about our Phrase Repetition test.

Fail Overlapping Review History
Reviewers of this product have ALSO reviewed the following products:

Does not include products
from the same brand


46 of a random sample of 70 reviewers have substantial overlapping product review history. These reviewers have rated this product an average of 4.7 while the reviewers who have a more unique product review history rated this product an average of 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.

from reviewers with substantial overlapping history

from reviewers without a substantial overlapping history


4.7
4.3


Read more about our Overlapping Review History test.

Warn Word Count Comparison

  • 36%
  • 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 146 reviews (or 36%) 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.

from reviews with an overrepresented word count

from reviews with a properly represented word count


4.8
4.8


Read more about our Word Count Comparison test.

Pass Rating Trend

  • 4%
  • Created over 2 days

We counted 406 reviews for this product over the span of 254 days, an average of 1.6 reviews per day. If these reviews were created randomly, there would be a 99.9% chance that we would see 7 or fewer reviews on any given day.

However, we see the following 2 days exceeding this threshold:In total, we found that 16 reviews were created on just 2 days. This is within an acceptable range and it does not appear to be significantly affecting the overall rating for this product.

from reviews created on high volume days

from reviews created on normal volume days


4.7
4.8


Read more about our Rating Trend test.

Pass Suspicious Reviewers

One-Hit Wonders

We didn't detect a substantial amount of One Hit Wonders.

Never-Verified Reviewers


1 of a random sample of 70 reviewers has 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.

from never-verified reviewers

from reviewers with at least one verified purchase review


4.0
4.6


Take-Back Reviewers

We didn't detect a substantial amount of Take-Back Reviewers.

Single-Day Reviewers

We didn't detect a substantial amount of Single-Day Reviewers.

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.

Pass Brand Repeats

Brand Repeaters


3 of a random sample of 70 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.

from Brand Repeaters

from Non-Repeaters


5.0
4.5


Read more about our Brand Repeats test.

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:
  1. 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.
  2. We have no information on reviews that were never published in the first place.
  3. 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.
Read more about the Deleted Reviews test here.


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