Close
Amazon.com > Sports & Outdoors > Outdoor Recreation > Camping & Hiking > Backpacks, Bags & Accessories > Backpacking Packs
VBIGER 40L-80L Hiking Backpack Camping Backpack Backpacking Outdoor Backpack for Climbing Travel
More product info
From VBIGER
This report was last updated 6/18/2019.
Refresh the report to view the most up-to-date data available:
Refresh the report to view the most up-to-date data available:
View/Edit Adjustment
Jump to Report Card
Report Card
Pass Overall Grade
FAIL Suspicious Reviewers
WARN Reviewer Participation
PASS Rating Trend
PASS Unverified Purchases
PASS Word Count Comparison
PASS Phrase Repetition
PASS Overlapping Review History
PASS Reviewer Ease
PASS Brand Repeats
PASS Incentivized Reviews
PASS Deleted Reviews
Most Trusted Reviews
Nice backpack. Didn’t use it for my hiking. It didn’t ... [Go to full review]
May 8, 2019
100%
TRUST
TRUST
- Verified Purchaser
- Critical Reviewer (avg. rating: 3.9)
Least Trusted Reviews
Bought for my boyfriend. Quality material, not too heavy. Very ... [Go to full review]
Jan 23, 2017
45%
TRUST
TRUST
- Verified Purchaser
- Overrepresented Participation (posted 24 Reviews)
- Critical Reviewer (avg. rating: 4.0)
Analysis Details
Fail Suspicious Reviewers
Take-Back Reviewers
54 of the 178 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 3.9. 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.
Warn Reviewer Participation
-
- 37%
- 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 66 reviewers (or 37%) 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
-
- 3%
- Created over 4 days
We counted 178 reviews for this product over the span of 1,288 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 4 days exceeding this threshold:In total, we found that 6 reviews were created on just 4 days. This is within an acceptable range and it does not appear to be significantly affecting the overall rating for this product.
Pass Unverified Purchases
24 of the 178 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 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.
Read more about our Word Count Comparison test.
Pass 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:
Show MoreShow Less
2 reviews
(4.0/5)
(4.0/5)
2 reviews
(4.0/5)
(4.0/5)
2 reviews
(5.0/5)
(5.0/5)
2 reviews
(5.0/5)
(5.0/5)
5 reviews
(5.0/5)
(5.0/5)
2 reviews
(4.0/5)
(4.0/5)
5 reviews
(3.4/5)
(3.4/5)
3 reviews
(3.0/5)
(3.0/5)
5 reviews
(5.0/5)
(5.0/5)
2 reviews
(5.0/5)
(5.0/5)
4 reviews
(3.0/5)
(3.0/5)
3 reviews
(3.0/5)
(3.0/5)
4 reviews
(3.0/5)
(3.0/5)
2 reviews
(5.0/5)
(5.0/5)
2 reviews
(5.0/5)
(5.0/5)
2 reviews
(5.0/5)
(5.0/5)
4 reviews
(3.0/5)
(3.0/5)
2 reviews
(5.0/5)
(5.0/5)
2 reviews
(3.0/5)
(3.0/5)
Common Phrases in Titles:
2 reviews
(5.0/5)
(5.0/5)
2 reviews
(5.0/5)
(5.0/5)
6 of the 178 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.
Pass Overlapping Review History
Reviewers of this product have ALSO reviewed the following products:
2% also reviewed:
REXING V1 - 4K Ultra HD Car Dash Cam 2.4"... by REXING
2% also reviewed:
Harry Potter and the Sorcerer's Stone by J.K. Rowling
2% also reviewed:
Metene Travel Pillow Soft Velvet Inflatable Neck... by Metene
2% also reviewed:
Fire HD 8 Tablet with Alexa by Amazon
2% also reviewed:
KONNWEI KW850 Professional OBD2 Scanner Auto Code... by KONNWEI
2% also reviewed:
Binoculars for Adults, Compact Binoculars 10X42... by WEYN
2% also reviewed:
ODesign Adhesive Paper Towel Holder Under Cabinet... by ODesign
Does not include products
from the same brand
from the same brand
19 of the 178 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.
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 4.2, 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 Repeaters
6 of the 178 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 Incentivized Reviews
On Oct 3, 2016, Amazon prohibited incentivized reviews, however we still test for them since there are still millions in our dataset.
3 of the 178 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.
Read more about our Incentivized Reviews test. Check out our study showing that Incentivized Reviewers are much more likely to leave a positive review.
Pass Deleted Reviews
- 0
- Reviews have been deleted
We have not discovered any deleted reviews for this product.
There are a few limitations to keep in mind regarding the Deleted Reviews test:
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.