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Sensi Wi-Fi Programmable Thermostat 1F86U-42WF for Smart Home, Works with Alexa From Emerson Thermostats Report Feedback

Pass Reviews appear natural

Original:

3,779 Reviews

Adjusted:

3,340 Reviews

Rank in: Thermostats
34%
35%

View/Edit Adjustment
How is this calculated
Report Last Updated: Jan 2, 2018
Update Available
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Report Card

Click a test to jump to details

FAIL Suspicious Reviewers
FAIL Phrase Repetition
FAIL Overlapping Review History
FAIL Skewed Helpfulness
WARN Deleted Reviews
PASS Rating Trend
PASS Unverified Purchases
PASS Word Count Comparison
PASS Reviewer Participation
PASS Reviewer Ease
PASS Brand Repeats
PASS Incentivized Reviews
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Most Trusted Reviews

Keeps dropping the WiFi connection. Contacted customer service, they blamed ... [Go to full review]
Jul 12, 2017      
100% TRUST
  • Verified Purchaser
  • One-Hit Wonder
  • Overrepresented Participation (posted 1 review)
  • Critical Reviewer (avg. rating: 1.0)


Least Trusted Reviews

This thermostat replaced an old White - Rodgers programmable thermostat. ... [Go to full review]
Feb 17, 2015      
0% TRUST
  • Unverified Purchaser
  • Contains repetitive phrases (show)
  • One-Hit Wonder
  • Never-Verified Reviewer
  • Overrepresented Participation (posted 1 review)
  • Easy Grader (avg. rating: 5.0)


Analysis Details


Fail Suspicious Reviewers

Never-Verified Reviewers


59 of the 3,779 reviewers have never written a verified purchase review. The Never-Verified Reviewers have rated this product an average of 3.1 while the reviewers who have written at least one verified purchase review rated this product an average of 4.2. 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 never-verified reviewers

from reviewers with at least one verified purchase review


3.1
4.2


Take-Back Reviewers


455 of the 3,779 reviewers have had at least one of their past reviews for another product deleted. The Take-Back Reviewers have rated this product an average of 4.4 while the reviewers who don't have any deleted reviews in their history have rated this product an average of 4.1. 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 take-back reviewers

from reviewers without previously deleted reviews


4.4
4.1


Read more about our Suspicious Reviewers 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:
489 reviews
(12.9%)
98 reviews
(2.6%)
108 reviews
(2.9%)
45 reviews
(1.2%)
66 reviews
(1.7%)
107 reviews
(2.8%)
Show MoreShow Less
Common Phrases in Titles:
202 reviews
(5.3%)
110 reviews
(2.9%)
88 reviews
(2.3%)
54 reviews
(1.4%)
48 reviews
(1.3%)
99 reviews
(2.6%)
138 reviews
(3.7%)
Show MoreShow Less


308 of the 3,779 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 4.1. 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
4.1


Read more about our Phrase Repetition test.

Fail Overlapping Review History

3% also reviewed:
Product Unavailable by

3% also reviewed:
Amazon Fire TV Stick by

Does not include products
from the same brand


567 of the 3,779 reviewers have substantial overlapping product review history. These reviewers have rated this product an average of 4.4 while the reviewers who have a more unique product review history rated this product an average of 4.1. 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


4.4
4.1


Read more about our Overlapping Review History test.

Fail Skewed Helpfulness
We examined the average net helpfulness score of negative reviews against the average net helpfulness score of positive reviews. The net helpfulness score is the number of times a review has been marked as helpful minus the number of times a review has been marked as unhelpful. We found that the negative reviews had an average net helpfulness score of -1.6 while the positive reviews had an average net helpfulness score of 0.3. Based on our statistical modeling, this discrepancy is significant enough to believe that the difference is not due to random chance, but possibly due to influence of unnatural voting patterns.

Example critical reviews

0.3 average net helpfulness for positive reviews

-1.6 average net helpfulness for negative reviews


Read more about our Skewed Helpfulness test.


Warn Deleted Reviews

We discovered a total of 1 deleted review for this product, with an average rating of 5. 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.

5.0 average rating of deleted reviews

5.0



Read more about our Deleted Reviews test.

Pass Rating Trend

  • 3%
  • Created over 9 days

We counted 3,779 reviews for this product over the span of 1,329 days, an average of 2.8 reviews per day. If these reviews were created randomly, there would be a 99.9% chance that we would see 10 or fewer reviews on any given day.

However, we see the following 9 days exceeding this threshold:In total, we found that 113 reviews were created on just 9 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


3.9
4.2


Read more about our Rating Trend test.

Pass Unverified Purchases

345 of the 3,779 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


3.8
4.2


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 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.

Pass Reviewer Participation

  • 30%
  • 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 1124 reviewers (or 30%) are within an overrepresented participation group. This is within an acceptable range and it does not appear to be significantly affecting the overall rating for this product.

From reviewers with an overrepresented participation

From reviewers with a properly represented participation


3.8
4.3


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 4.2.

4.1 Product's Average Ease Score

4.2 Category's Average Ease Score


4.1
4.2


Read more about our Reviewer Ease test.


Pass Brand Repeats

Brand Repeaters


94 of the 3,779 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


4.6
4.1


Read more about our Brand Repeats 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.


1 of the 3,779 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.

from incentivized reviews

from non-incentivized reviews


5.0
4.2


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.