Swingline Stapler, Optima 40, Compact, Low Force, 40 Sheets, Black/Silver (S7087842)
From Swingline 
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Warn Unnatural reviews possible
Original Rating:
395 Reviews
Adjusted Rating:
330 Reviews
Rank in: Staplers & Punches
| 79% |
| 81% |
View/Edit Adjustment 
Report Card
Click a test to jump to details
FAIL 
Suspicious Reviewers
Suspicious ReviewersFAIL 
Word Count Comparison
Word Count ComparisonFAIL 
Phrase Repetition
Phrase RepetitionFAIL 
Overlapping Review History
Overlapping Review HistoryWARN 
Deleted Reviews
Deleted ReviewsWARN 
Reviewer Participation
Reviewer ParticipationPASS 
Rating Trend
Rating TrendPASS 
Unverified Purchases
Unverified PurchasesPASS 
Reviewer Ease
Reviewer EasePASS 
Brand Repeats
Brand RepeatsPASS 
Skewed Helpfulness
Skewed HelpfulnessPASS 
Incentivized Reviews
Incentivized Reviews
Most Trusted Reviews
Nice stapler easy to use I like it only thing ... [Go to full review]
Aug 13, 2016
100%
TRUST
TRUST
-
Verified Purchaser
-
Easy Grader (avg. rating: 4.5)
Critical Reviewer (avg. rating: 4.1)
Least Trusted Reviews
Great product, easy to use. [Go to full review]
Sep 20, 2016
0%
TRUST
TRUST
-
Unverified Purchaser -
Overrepresented word count (5 words)
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Overrepresented Participation (posted 8 reviews) -
Easy Grader (avg. rating: 4.8)
Analysis Details
Note: While Amazon claims 395 reviews, we counted 468 available on their site.
Fail Suspicious Reviewers
Suspicious Reviewers
One-Hit Wonders
11 of the 468 reviewers have only reviewed this product. The One-Hit Wonders have rated this product an average of 3.0 while the reviewers who have posted more than one review have 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.
Never-Verified Reviewers
11 of the 468 reviewers have never written a verified purchase review. The Never-Verified Reviewers have rated this product an average of 3.7 while the reviewers who have written at least one verified purchase review 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.
Take-Back Reviewers
212 of the 468 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 4.7 while the reviewers who don't have any deleted reviews in their history 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.
Fail Word Count Comparison
Word Count Comparison
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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 109 reviews (or 23%) 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 4.4. 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.
Fail Phrase Repetition
Phrase Repetition
Reviews that contain one of these phrases are NOT necessarily devalued; read more about how this test works here.
18 of the 468 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 4.4. 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.
Fail Overlapping Review History
Overlapping Review History
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1% also reviewed:
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60 of the 468 reviewers have substantial overlapping product review history. These reviewers have rated this product an average of 4.8 while the reviewers who have a more unique product review history 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.
Warn Deleted Reviews
Deleted Reviews
We discovered a total of 6 deleted reviews 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
Read more about our Deleted Reviews test.
Warn Reviewer Participation
Reviewer Participation
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- 68%
- 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 316 reviewers (or 68%) are within an overrepresented participation group. This is an excessively high number of reviewers in overrepresented participation groups.
Pass Rating Trend
Rating Trend
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- 1%
- Created over 1 day
We counted 468 reviews for this product over the span of 787 days, an average of 0.6 reviews per day. If these reviews were created randomly, there would be a 99.9% chance that we would see 4 or fewer reviews on any given day.
However, we see the following 1 day exceeding this threshold:In total, we found that 5 reviews were created on just 1 day. This is within an acceptable range and it does not appear to be significantly affecting the overall rating for this product.
Pass Unverified Purchases
Unverified Purchases
35 of the 468 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.
Pass Reviewer Ease
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 4.2, while the average ease score for reviewers in this category is 4.3.
4.2 Product's Average Ease Score
4.3 Category's Average Ease Score
Read more about our Reviewer Ease test.
Pass Brand Repeats
Brand Repeats
Brand Repeaters
46 of the 468 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.
Pass Skewed Helpfulness
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 could not find any statistically significant difference in average net helpfulness score between the negative reviews and positive reviews.
0.2 average net helpfulness for positive reviews
0.3 average net helpfulness for negative reviews
Read more about our Skewed Helpfulness test.
Pass Incentivized Reviews
Incentivized Reviews
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, or check out our study showing that Incentivized Reviewers are much more likely to leave a positive review.
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.