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Vacuum Sealer Machine By Mueller | Automatic Vacuum Air Sealing System For Food Preservation...
More product info From Mueller Austria

Amazon Reviews for  Vacuum Sealer Machine By Mueller | Automatic Vacuum Air Sealing System For Food Preservation w/Starter Kit | Compact Design | Lab Tested | Dry & Moist Food Modes | Led Indicator Lights
Rating:
5,078 Ratings
2,708 Reviews
("Ratings" vs. "Reviews")
28% of potentially unnatural reviews removed (why?)
Adjusted:
View/Edit Adjustment
Jump to Report Card
Report Info:
Last Updated: Oct 13, 2020
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Show Report History
Note: While Amazon.com claims 5,078 Ratings, we counted 2,708 Reviews available on their site.
Note: We only analyze "reviews" and ignore one-tap "ratings".

Report Card

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

Most Trusted Reviews

5/5
This vacuum sealer is a great value and works perfectly. ... [Go to full review]
Aug 7, 2020      
100% TRUST
  • Verified Purchaser
  • Take-Back Reviewer (1 deleted Review; avg. rating: 5.0)
  • Critical Reviewer (avg. rating: 4.1)


Least Trusted Reviews

5/5
Easy to use and works great! [Go to full review]
Jun 26, 2020      
0% TRUST
  • Verified Purchaser
  • Created on a high volume day
  • Overrepresented word count (6 words)
  • Contains repetitive phrases (show)
  • One-Hit Wonder
  • Overrepresented Participation (posted 1 Review)
  • Easy Grader (avg. rating: 5.0)


Analysis Details

Fail Deleted Reviews

We discovered a total of 139 deleted Reviews for this product, with an average rating of 4.7. 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.

4.7 average rating of deleted reviews

4.7


Show distribution of deleted reviews

Fail Rating Trend

  • 24%
  • Created over 38 days

We counted 2,708 reviews for this product over the span of 588 days, an average of 4.6 reviews per day. If these reviews were created randomly, there would be a 99.9% chance that we would see 13 or fewer reviews on any given day.

However, we see the following 38 days exceeding this threshold:In total, we found that 646 reviews were created on just 38 days. The reviews on these high volume days have rated this product an average of 4.6 while reviews from other days have rated this product an average of 4.4. 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 created on high volume days

from reviews created on normal volume days


4.6
4.4


Read more about our Rating Trend test.

Fail Word Count Comparison

  • 29%
  • 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 791 reviews (or 29%) are within an overrepresented word count group. These reviews have rated this product an average of 4.6, while all other reviews have rated this product an average of 4.4. 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


4.6
4.4


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:
99 reviews
(4.6/5)
54 reviews
(4.9/5)
36 reviews
(4.9/5)
Common Phrases in Titles:
30 reviews
(5.0/5)


91 of the 2,708 total reviews for this product use substantial repetitive phrases between them. These reviewers have rated this product an average of 4.9 while reviews without substantial repetitive phrases rated this product an average of 4.4. 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


4.9
4.4


Read more about our Phrase Repetition test.

Warn Suspicious Reviewers

One-Hit Wonders


340 of the 2,708 reviewers have only reviewed this product. While this is more One-Hit Wonders than we'd expect to see, the discrepancy in ratings between the One-Hit Wonders and reviewers who have posted more than one review isn't significant enough to rule out the possibility of it being due to random chance.

from one-hit wonders

from reviewers with more than one review


4.5
4.4


Read more about our Suspicious Reviewers test.

Warn Reviewer Participation

  • 78%
  • 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 2108 reviewers (or 78%) 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
4.4


Read more about our Reviewer Participation test.

Pass Unverified Purchases

116 of the 2,708 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


4.6
4.4


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
  • 0%
  • Substantial overlapping review history
0 of the 2,708 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.
Read more about our Overlapping Review History 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 4.3, while the average ease score for reviewers in this category is 4.3.

4.3 Product's Average Ease Score

4.3 Category's Average Ease Score


4.3
4.3


Read more about our Reviewer Ease test.


Pass Brand Repeats

Brand Repeaters


119 of the 2,708 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


4.7
4.4


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 2,708 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


2.0
4.5


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