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iRobot Scooba 450 Floor Scrubbing Robot
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From iRobot
This report was last updated 4/12/2019.
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Report Info:
Note: We only analyze "reviews" and ignore one-tap "ratings".
Report Card
Warn Overall Grade
FAIL
Unverified Purchases
![](/public/imgs/reviewmeta/vp-icon.png)
FAIL
Suspicious Reviewers
![](/public/imgs/reviewmeta/su-icon.png)
FAIL
Phrase Repetition
![](/public/imgs/reviewmeta/pr-icon.png)
FAIL
Overlapping Review History
![](/public/imgs/reviewmeta/rh-icon.png)
WARN
Deleted Reviews
![](/public/imgs/reviewmeta/dl-icon.png)
WARN
Brand Repeats
![](/public/imgs/reviewmeta/re-icon.png)
WARN
Reviewer Participation
![](/public/imgs/reviewmeta/ex-icon.png)
PASS
Rating Trend
![](/public/imgs/reviewmeta/rt-icon.png)
PASS
Word Count Comparison
![](/public/imgs/reviewmeta/wc-icon.png)
PASS
Reviewer Ease
![](/public/imgs/reviewmeta/sc-icon.png)
PASS
Incentivized Reviews
![](/public/imgs/reviewmeta/ic-icon.png)
Most Trusted Reviews
This works great on my porcelain ceramic tiles and lineoleum ... [Go to full review]
Apr 25, 2017
100%
TRUST
TRUST
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Verified Purchaser
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Take-Back Reviewer (1 deleted Review; avg. rating: 4.0)
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Easy Grader (avg. rating: 4.2)
Least Trusted Reviews
I've had Scooba for a while now and love it. ... [Go to full review]
Dec 16, 2015
0%
TRUST
TRUST
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Unverified Purchaser
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Overrepresented word count (153 words)
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Brand Repeater (3 of 8 reviews for this brand; avg rating: 4.7)
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Overrepresented Participation (posted 8 Reviews)
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Easy Grader (avg. rating: 4.5)
Analysis Details
Fail
Unverified Purchases
![](/public/imgs/reviewmeta/vp-icon.png)
54 of the 292 total reviews for this product are unverified purchases. The unverified purchasers have rated this product an average of 2.4 while the verified purchasers have rated this product an average of 3.3. 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.
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
Suspicious Reviewers
![](/public/imgs/reviewmeta/su-icon.png)
One-Hit Wonders
43 of the 292 reviewers have only reviewed this product. The One-Hit Wonders have rated this product an average of 2.4 while the reviewers who have posted more than one review have rated this product an average of 3.3. 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.
Never-Verified Reviewers
14 of the 292 reviewers have never written a verified purchase review. The Never-Verified Reviewers have rated this product an average of 2.1 while the reviewers who have written at least one verified purchase review rated this product an average of 3.2. 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.
Take-Back Reviewers
115 of the 292 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 3.5 while the reviewers who don't have any deleted reviews in their history have rated this product an average of 2.9. 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.
Fail
Phrase Repetition
![](/public/imgs/reviewmeta/pr-icon.png)
Reviews that contain one of these phrases are NOT necessarily devalued; read more about how this test works here.
Common Phrases in Reviews:
Show MoreShow Less
6 reviews
(2.8/5)
(2.8/5)
2 reviews
(4.5/5)
(4.5/5)
14 reviews
(2.9/5)
(2.9/5)
12 reviews
(3.4/5)
(3.4/5)
5 reviews
(3.0/5)
(3.0/5)
2 reviews
(3.5/5)
(3.5/5)
2 reviews
(5.0/5)
(5.0/5)
7 reviews
(3.6/5)
(3.6/5)
3 reviews
(3.7/5)
(3.7/5)
3 reviews
(4.7/5)
(4.7/5)
Common Phrases in Titles:
2 reviews
(3.0/5)
(3.0/5)
18 of the 292 total reviews for this product use substantial repetitive phrases between them. These reviewers have rated this product an average of 3.8 while reviews without substantial repetitive phrases rated this product an average of 3.1. 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.
Fail
Overlapping Review History
![](/public/imgs/reviewmeta/rh-icon.png)
Reviewers of this product have ALSO reviewed the following products:
3% also reviewed:
Moneual RYDIS H68 Pro RoboVacMop Hybrid Robot... by Moneual
3% also reviewed:
Irwin Industrial Tools 2078300 8-Inch... by Unknown
3% also reviewed:
NuGo Dark Chocolate Peanut Butter Cup, 12g Vegan... by NuGo
2% also reviewed:
Waterpik Ultra Water Flosser by Waterpik
2% also reviewed:
Wickedly Prime Organic Hibiscus Tea, Full-Leaf... by Wickedly Prime
2% also reviewed:
Gerber Shard Keychain Tool by Gerber
Does not include products
from the same brand
from the same brand
25 of the 292 reviewers have substantial overlapping product review history. These reviewers have rated this product an average of 3.8 while the reviewers who have a more unique product review history rated this product an average of 3.1. 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.
Warn
Deleted Reviews
![](/public/imgs/reviewmeta/dl-icon.png)
We discovered a total of 12 deleted Reviews for this product, with an average rating of 4. 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:
- 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.
- We have no information on reviews that were never published in the first place.
- 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.
Warn
Brand Repeats
![](/public/imgs/reviewmeta/re-icon.png)
Brand Repeaters
87 of the 292 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.
Brand Loyalists
7 of the 292 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.
Warn
Reviewer Participation
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- 33%
- 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 97 reviewers (or 33%) are within an overrepresented participation group. While this is more reviews from overrepresented participation groups than we'd expect to see, these reviews do not appear to have a significant impact on the overall rating.
Pass
Rating Trend
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- 0%
- Created on high-volume days
We counted 292 reviews for this product over the span of 1,725 days, an average of 0.2 reviews per day. If these reviews were created randomly, there would be a 99.9% chance that we would see 3 or fewer reviews on any given day. We didn't find any days exceeding this threshold.
Read more about our Rating Trend test.
Read more about our Rating Trend test.
Pass
Word Count Comparison
![](/public/imgs/reviewmeta/wc-icon.png)
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- 23%
- 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 68 reviews (or 23%) are within an overrepresented word count group. This is within an acceptable range and it does not appear to be significantly affecting the overall rating for this product.
Pass
Reviewer Ease
![](/public/imgs/reviewmeta/sc-icon.png)
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 3.7, while the average ease score for reviewers in this category is 4.2.
3.7 Product's Average Ease Score
4.2 Category's Average Ease Score
Read more about our Reviewer Ease test.
Pass
Incentivized Reviews
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On Oct 3, 2016, Amazon prohibited incentivized reviews, however we still test for them since there are still millions in our dataset.
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- 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.
Read more about our Incentivized Reviews test. Check out our study showing that Incentivized Reviewers are much more likely to leave a positive review.