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Amazon Smart Plug, works with Alexa – A Certified for Humans Device
More product info From Amazon

Amazon Reviews for  Amazon Smart Plug, works with Alexa – A Certified for Humans Device
Rating:
421,839 Ratings
38,508 Reviews
("Ratings" vs. "Reviews")
45% of potentially unnatural reviews removed (why?)
Adjusted:
21,307 Reviews




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Report Info:
Last Updated: May 15, 2021
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Note: While Amazon.com claims 421,839 Ratings, we counted 38,508 Reviews available on their site.
Note: We only analyze "reviews" and ignore one-tap "ratings".

Report Card

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

Most Trusted Reviews

 I’m using it to turn my portable heater on and ... [Go to full review]
Jan 16, 2019      
51% TRUST
  • Verified Purchaser
  • Take-Back Reviewer (1 deleted Review; avg. rating: 5.0)
  • Brand Repeater (2 of 26 reviews for this brand; avg rating: 4.0)
  • Easy Grader (avg. rating: 4.7)


Least Trusted Reviews

Works great. Must cheaper than other brand-name options. Would recommend ... [Go to full review]
Dec 7, 2018      
38% TRUST
  • Verified Purchaser
  • Overrepresented word count (14 words)
  • Take-Back Reviewer (8 deleted Reviews; avg. rating: 5.0)
  • Easy Grader (avg. rating: 4.5)


Analysis Details

Fail Suspicious Reviewers

Take-Back Reviewers


10,902 of the 38,508 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.

from take-back reviewers

from reviewers without previously deleted reviews


4.5
4.5


Single-Day Reviewers


479 of the 38,508 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 4.7 while all other reviewers 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.

from single-day reviewers

from non-single-day reviewers


4.7
4.5


Read more about our Suspicious Reviewers test.

Fail Word Count Comparison

  • 51%
  • 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 19,737 reviews (or 51%) 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 4.3. 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 reviews with an overrepresented word count

from reviews with a properly represented word count


4.7
4.3


Read more about our Word Count Comparison 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:
2400 reviews
(4.9/5)
608 reviews
(4.8/5)
882 reviews
(4.9/5)
Common Phrases in Titles:
759 reviews
(4.9/5)
412 reviews
(5.0/5)
1023 reviews
(4.9/5)


2,506 of the 38,508 total reviews for this product use substantial repetitive phrases between them. These reviewers have rated this product an average of 5.0 while reviews without substantial repetitive phrases 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.

from reviews with substantial repetitive phrases

from reviews without substantial repetitive phrases


5.0
4.5


Read more about our Phrase Repetition test.

Warn Deleted Reviews

We discovered a total of 9 deleted Reviews for this product, with an average rating of 4.6. 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:
  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 our Deleted Reviews test.

4.6 average rating of deleted reviews

4.6


Show distribution of deleted reviews

Warn Rating Trend

  • 48%
  • Created over 168 days

We counted 38,508 reviews for this product over the span of 941 days, an average of 40.9 reviews per day. If these reviews were created randomly, there would be a 99.9% chance that we would see 64 or fewer reviews on any given day.

However, we see the following 168 days exceeding this threshold:In total, we found that 18,512 reviews were created on just 168 days. This is an excessively high number of reviews submitted on these high volume days.

from reviews created on high volume days

from reviews created on normal volume days


4.6
4.5


Read more about our Rating Trend test.

Warn Brand Repeats

Brand Repeaters


12,532 of the 38,508 reviewers have reviewed other products for this brand. While this is more Brand Repeaters than we'd expect to see, the discrepancy in ratings between the Brand Repeaters and non-repeaters isn't significant enough to rule out the possibility of it being due to random chance.

from Brand Repeaters

from Non-Repeaters


4.7
4.5


Brand Loyalists


991 of the 38,508 reviewers have reviewed multiple products but half or more of their reviews are for this brand. While this is more Brand Loyalists than we'd expect to see, the discrepancy in ratings between the Brand Loyalists and non-loyalists isn't significant enough to rule out the possibility of it being due to random chance.

from Brand Loyalists

from Non-Loyalists


4.6
4.5


Read more about our Brand Repeats test.

Warn 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 4.2. While this discrepancy is rather large, it is not quite large enough to rule out the possibility of it being due random chance.

4.4 Product's Average Ease Score

4.2 Category's Average Ease Score


4.4
4.2


Read more about our Reviewer Ease test.


Warn Reviewer Participation

  • 64%
  • 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 24652 reviewers (or 64%) are within an overrepresented participation group. This is an excessively high number of reviewers in overrepresented participation groups.

From reviewers with an overrepresented participation

From reviewers with a properly represented participation


4.5
4.6


Read more about our Reviewer Participation test.

Pass Unverified Purchases

752 of the 38,508 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.

from unverified purchasers

from verified purchases


4.0
4.6


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:



792 of the 38,508 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.

from reviewers with substantial overlapping history

from reviewers without a substantial overlapping history


4.6
4.5


Read more about our Overlapping Review History test.

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.