• 575
• Reviews have been deleted

We discovered a total of 575 deleted Reviews for this product, with an average rating of 4.8. 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.

Show distribution of deleted reviews

One-Hit Wonders

• 
• 11%
• have only posted one review

1 of the 9 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.

Read more about our Suspicious Reviewers test.

• 
• 0%
• Created over 34 days

We counted 9 reviews for this product over the span of 74 days, an average of 0.1 reviews per day. If these reviews were created randomly, there would be a 99.9% chance that we would see 2 or fewer reviews on any given day.

However, we see the following 34 days exceeding this threshold:

• 7 Reviews on Dec 28, 2016 (Avg. rating: 5.0)
• 7 Reviews on Dec 17, 2016 (Avg. rating: 4.6)
• 6 Reviews on May 20, 2018 (Avg. rating: 4.2)
• 5 Reviews on Jan 17, 2018 (Avg. rating: 5.0)
• 5 Reviews on Jan 6, 2017 (Avg. rating: 5.0)
• 5 Reviews on Apr 23, 2019 (Avg. rating: 4.8)
• 5 Reviews on Jun 29, 2017 (Avg. rating: 4.8)
• 5 Reviews on Sep 9, 2016 (Avg. rating: 4.6)
• 5 Reviews on Dec 6, 2016 (Avg. rating: 4.6)
• 5 Reviews on Dec 19, 2016 (Avg. rating: 4.2)
• 5 Reviews on Feb 15, 2018 (Avg. rating: 3.4)
• 4 Reviews on Jul 31, 2016 (Avg. rating: 5.0)
• 4 Reviews on Sep 3, 2016 (Avg. rating: 5.0)
• 4 Reviews on Oct 8, 2016 (Avg. rating: 5.0)
• 4 Reviews on Nov 28, 2016 (Avg. rating: 5.0)
• 4 Reviews on Dec 9, 2016 (Avg. rating: 5.0)
• 4 Reviews on Apr 19, 2018 (Avg. rating: 5.0)
• 4 Reviews on May 22, 2017 (Avg. rating: 5.0)
• 4 Reviews on Apr 18, 2017 (Avg. rating: 4.8)
• 4 Reviews on Feb 9, 2017 (Avg. rating: 4.8)
• 4 Reviews on Jan 23, 2017 (Avg. rating: 4.8)
• 4 Reviews on Dec 20, 2016 (Avg. rating: 4.8)
• 4 Reviews on Dec 15, 2016 (Avg. rating: 4.8)
• 4 Reviews on Apr 22, 2018 (Avg. rating: 4.8)
• 4 Reviews on Jul 4, 2018 (Avg. rating: 4.8)
• 4 Reviews on Aug 16, 2018 (Avg. rating: 4.8)
• 4 Reviews on Aug 31, 2016 (Avg. rating: 4.5)
• 4 Reviews on Jun 8, 2019 (Avg. rating: 4.5)
• 4 Reviews on Mar 12, 2019 (Avg. rating: 4.3)
• 4 Reviews on Dec 26, 2016 (Avg. rating: 4.0)
• 4 Reviews on Oct 19, 2016 (Avg. rating: 4.0)
• 4 Reviews on May 30, 2018 (Avg. rating: 3.8)
• 4 Reviews on Mar 16, 2018 (Avg. rating: 3.3)
• 4 Reviews on Aug 31, 2018 (Avg. rating: 2.3)
Show All

In total, we found that 0 reviews were created on just 34 days. 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 Rating Trend test.

• 
• 0%
• Unverified Purchases

0 of the 9 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.
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.

• 
• 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.

• 
• 0%
• Used substantial repetitive phrases

0 of the 9 total reviews for this product use substantial repetitive phrases between them. 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 Phrase Repetition test.

• 
• 11%
• Substantial overlapping review history

1 of the 9 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.

• 
• 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.

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 3.1, while the average ease score for reviewers in this category is 4.3.

Brand Repeaters

We didn't detect a substantial amount of Brand Repeaters.

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.