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(2 Pack) Vitamin D3 5000 IU in Organic Avocado Oil, 90 Mini Softgels, Non-GMO, Soy Free, Gluten...
More product info From SmarterVitamins

Amazon Reviews for  (2 Pack) Vitamin D3 5000 IU in Organic Avocado Oil, 90 Mini Softgels, Non-GMO, Soy Free, Gluten Free, Supports Healthy Bones and Immune Function
Rating:
1,044 Ratings
911 Reviews
("Ratings" vs. "Reviews")
5% of potentially unnatural reviews removed (why?)
Adjusted:
View/Edit Adjustment
Jump to Report Card
Report Info:
Last Updated: Nov 26, 2020
Show Report History
Note: While Amazon.com claims 1,044 Ratings, we counted 911 Reviews available on their site.
Note: We only analyze "reviews" and ignore one-tap "ratings".

Report Card

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

Most Trusted Reviews

Just started taking them, will take time to see if ... [Go to full review]
Jun 4, 2020      
100% TRUST
  • Verified Purchaser
  • Take-Back Reviewer (3 deleted Reviews; avg. rating: 4.3)
  • Overlapping Review History: reviewed 1 of 9 top products
  • Critical Reviewer (avg. rating: 4.2)


Least Trusted Reviews

Great product good source of vitamin D no fillers. [Go to full review]
Apr 12, 2020      
0% TRUST
  • Verified Purchaser
  • Overrepresented word count (9 words)
  • Take-Back Reviewer (1 deleted Review; avg. rating: 5.0)
  • Brand Monogamist (4 of 4 reviews for this brand; avg rating: 5.0)
  • Overrepresented Participation (posted 4 Reviews)
  • Easy Grader (avg. rating: 5.0)


Analysis Details

Fail Incentivized Reviews
On Oct 3, 2016, Amazon prohibited incentivized reviews, however we still test for them since there are still millions in our dataset.


2 of the 911 total reviews for this product admitted to receiving a free or discounted product in exchange for a review. Incentivized reviews have rated this product an average of 4.0 while reviews that were not incentivized rated this product an average of 4.9. 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.

from incentivized reviews

from non-incentivized reviews


4.0
4.9


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

Fail Brand Repeats

Brand Loyalists


40 of the 911 reviewers have reviewed multiple products but half or more of their reviews are for this brand. This is an excessively large percentage of Brand Loyalists which may indicate unnatural reviews.

from Brand Loyalists

from Non-Loyalists


5.0
4.9


Read more about our Brand Repeats test.

Warn Deleted Reviews

We discovered a total of 33 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.

4.8 average rating of deleted reviews

4.8


Show distribution of deleted reviews

Warn Suspicious Reviewers

Take-Back Reviewers


327 of the 911 reviewers have had at least one of their past reviews for another product deleted. While this is more Take-Back Reviewers than we'd expect to see, it does not appear to have a significant impact on the overall rating.

from take-back reviewers

from reviewers without previously deleted reviews


4.9
4.9


Read more about our Suspicious Reviewers test.

Warn 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 4.5, while the average ease score for reviewers in this category is 4.4. While this discrepancy is rather large, it is not quite large enough to rule out the possibility of it being due random chance.

4.5 Product's Average Ease Score

4.4 Category's Average Ease Score


4.5
4.4


Read more about our Reviewer Ease test.


Warn Word Count Comparison

  • 30%
  • 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 275 reviews (or 30%) are within an overrepresented word count group. While this is more reviews from overrepresented word count groups than we'd expect to see, these reviews do not appear to have a significant impact on the overall rating.

from reviews with an overrepresented word count

from reviews with a properly represented word count


4.9
4.9


Read more about our Word Count Comparison test.

Warn Reviewer Participation

  • 69%
  • 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 630 reviewers (or 69%) 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


4.9
4.9


Read more about our Reviewer Participation test.

Pass Rating Trend

  • 1%
  • Created over 2 days

We counted 911 reviews for this product over the span of 1,103 days, an average of 0.8 reviews per day. If these reviews were created randomly, there would be a 99.9% chance that we would see 5 or fewer reviews on any given day.

However, we see the following 2 days exceeding this threshold:In total, we found that 12 reviews were created on just 2 days. This is within an acceptable range and it does not appear to be significantly affecting the overall rating for this product.

from reviews created on high volume days

from reviews created on normal volume days


5.0
4.9


Read more about our Rating Trend test.

Pass Unverified Purchases

94 of the 911 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


4.8
4.9


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 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:
27 reviews
(5.0/5)
28 reviews
(4.8/5)
16 reviews
(4.9/5)
16 reviews
(5.0/5)
15 reviews
(4.9/5)
15 reviews
(4.9/5)
15 reviews
(4.7/5)
19 reviews
(4.7/5)
15 reviews
(4.7/5)
24 reviews
(5.0/5)
Show MoreShow Less
Common Phrases in Titles:
49 reviews
(4.9/5)
8 reviews
(5.0/5)


116 of the 911 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.

from reviews with substantial repetitive phrases

from reviews without substantial repetitive phrases


4.9
4.9


Read more about our Phrase Repetition test.

Pass Overlapping Review History
Reviewers of this product have ALSO reviewed the following products:



32 of the 911 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.

from reviewers with substantial overlapping history

from reviewers without a substantial overlapping history


4.9
4.9


Read more about our Overlapping Review History test.