Dance Upon the Air (Three Sisters Island Book 1)
More product info
From Nora Roberts
Refresh the report to view the most up-to-date data available:
Note: We only analyze "reviews" and ignore one-tap "ratings".
Report Card











Most Trusted Reviews
TRUST
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Verified Purchaser
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Brand Repeater (3 of 149 reviews for this brand; avg rating: 4.0)
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Overlapping Review History: reviewed 2 of 9 top products
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Critical Reviewer (avg. rating: 4.2)
Least Trusted Reviews
TRUST
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Verified Purchaser
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Created on a high volume day
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Overrepresented word count (9 words)
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Contains repetitive phrases (
show)
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Brand Repeater (2 of 5 reviews for this brand; avg rating: 4.5)
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Overrepresented Participation (posted 5 Reviews)
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Easy Grader (avg. rating: 4.7)
Analysis Details

We discovered a total of 93 deleted Reviews for this product, with an average rating of 4.4. 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.

Brand Repeaters
339 of the 932 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
46 of the 932 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.

4.4 Product's Average Ease Score
4.3 Category's Average Ease Score
Read more about our Reviewer Ease test.

164 of the 932 total reviews for this product use substantial repetitive phrases between them. These reviewers have rated this product an average of 4.7 while reviews without substantial repetitive phrases 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.

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- 15%
- Created over 38 days
We counted 932 reviews for this product over the span of 6,275 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 38 days exceeding this threshold:In total, we found that 144 reviews were created on just 38 days. This is an excessively high number of reviews submitted on these high volume days.

One-Hit Wonders
112 of the 932 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.
Take-Back Reviewers
75 of the 932 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.

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- 53%
- 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 3 groups with a statistically significant greater concentration than what we'd expect to see:In total, we found that 498 reviews (or 53%) are within an overrepresented word count group. This is an excessively high number of reviews in overrepresented word count groups.

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- 77%
- From reviewers with an overrepresented participation
We see the following 3 participation groups with a statistically significant greater concentration than what we'd expect to see:In total, we found that 720 reviewers (or 78%) are within an overrepresented participation group. This is an excessively high number of reviewers in overrepresented participation groups.

288 of the 932 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.

5% also reviewed:
Fifty Shades of Grey [LegacyTitleID: 17468888] by
5% also reviewed:
Dragonfly in Amber: A Novel (Outlander) by Diana Gabaldon
4% also reviewed:
Jewels of the Sun (Gallaghers of Ardmore Trilogy) by Roberts, Nora
4% also reviewed:
The Villa by Nora Roberts
4% also reviewed:
Carolina Moon by Jove
3% also reviewed:
Irish Born (Irish Born Trilogy) by Nora Roberts
3% also reviewed:
Key of Light (Key Trilogy) by Roberts, Nora
3% also reviewed:
The Hunger Games (Hunger Games Trilogy, Book 1) by Suzanne Collins
3% also reviewed:
Harry Potter and the Sorcerer's Stone by J.K. Rowling
167 of the 932 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.

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- 0%
- Admitted to receiving an incentive
Read more about our Incentivized Reviews test. Check out our study showing that Incentivized Reviewers are much more likely to leave a positive review.