Kia ora, thanks for your interest in how we calculate an experience's ranking score. It's at the core of Rankers so I'm pleased you're curious.
The ranking score percentage is used to compare and sort experiences in ranking tables. It is not necessarily a direct measurement of the quality of a particular experience as rated by its customers. I've found it a useful tool to allow me to find the best experiences with confidence. But I've also found it important to read the customer reviews before making any final judgements!
We calculate an experience's ranking score using a multi-factor data model instead of a raw data average (mean). This model takes into account several important questions. For instance - is there a trusted body of reviews? What is the age of a review and is the review from a credible source?
Below you'll find details around some of the important factors that went into calculating the ranking score for Jacks Blowhole.
If you have any questions or comments about our ranking score calculation please get in touch at info@rankers.co.nz. We don't believe this is perfect or complete so we're always interested in ways we might make improvements.
Jacks Blowhole
Valid Reviews
16 Valid Reviews
The Jacks Blowhole experience has a total of 16 valid reviews. There are no invalid reviews that are excluded from the calculation. Reviews can be excluded only when a reviewer is not verified or after an investigation by our team determines the reviewer is not genuine.
Below is the distribution of ratings for the 16 valid reviews:
| Rating | Count | Percentage | |
|---|---|---|---|
| 10/10 | 4 |
|
25% |
| 9/10 | 1 |
|
6% |
| 8/10 | 5 |
|
31% |
| 7/10 | 3 |
|
19% |
| 6/10 | 3 |
|
19% |
| 5/10 | 0 |
|
0% |
| 4/10 | 0 |
|
0% |
| 3/10 | 0 |
|
0% |
| 2/10 | 0 |
|
0% |
| 1/10 | 0 |
|
0% |
80.00% Average
The raw data average (mean) for all the Jacks Blowhole valid reviews is 80.00% and is based on 16 valid reviews. This value is not used to calculate the ranking score and it only provided here as a comparison to the weighted average.
Face-to-Face Reviews
14 Face-to-Face Reviews
The Rankers team meets with travellers while they’re in New Zealand and conducts face-to-face surveys. These reviews, in our opinion, are the most trusted in the industry and represent a critical control sample. To our knowledge, we are the only travel review website in the world that has gone to this extent.
More about face-to-face reviews
Within the 16 valid reviews, the experience has 14 face-to-face reviews collected during interviews by our team.
Below is the distribution of ratings for the 14 face-to-face reviews:
| Rating | Count | Percentage | |
|---|---|---|---|
| 10/10 | 4 |
|
29% |
| 9/10 | 1 |
|
7% |
| 8/10 | 4 |
|
29% |
| 7/10 | 2 |
|
14% |
| 6/10 | 3 |
|
21% |
| 5/10 | 0 |
|
0% |
| 4/10 | 0 |
|
0% |
| 3/10 | 0 |
|
0% |
| 2/10 | 0 |
|
0% |
| 1/10 | 0 |
|
0% |
80.71% Average
The raw data average (mean) for all the Jacks Blowhole face-to-face reviews is 80.71% and is based on 14 face-to-face reviews. This value is not used to calculate the ranking score and it only provided here for comparison purposes.
Weighted Average
79.19%
Rankers calculates a weighted mean as a base average on which we can improve. Individual review's ratings are given a weight based on several factors. The weight of a review determines the overall impact it'll have on the final weighted average.
Recent reviews have more weight as they are more relevant and reflect the experience as it currently operates. Over time reviews become less relevant and loose their impact on the ranking score.
Low rating reviews carry slightly less weight. This dampens the effect of very low ratings for every experience across the board. This is especially important when the experience has few reviews overall and a single negative rating can grossly mischaracterise an experience. Consistent poor reviews will still result in the experience receiving a comparitively low ranking score.
Credible sources provide reviews that can be trusted. If we have verified a reviewer is genuine via a face-to-face meeting then the review carries additional weight.
| Reviewer | Rating | Age | Relative Weight |
|---|---|---|---|
| Mountain Mamas NZ | 8/10 | 782 days | 100% |
| Luke | 8/10 | 2927 days | 4% |
| Charlotte Molesworth | 6/10 | 2938 days | 3% |
| Caroline | 10/10 | 3168 days | 3% |
| Clayton Hunniford | 7/10 | 3190 days | 3% |
| Patrick Edwards | 6/10 | 3263 days | 3% |
| Michele | 7/10 | 3888 days | 1% |
| Frederieke | 6/10 | 3903 days | 1% |
| Saskia | 10/10 | 3945 days | 1% |
| Stefan | 10/10 | 4269 days | 0% |
| Bettina Fluhrer | 10/10 | 4269 days | 0% |
| Marie | 9/10 | 4269 days | 0% |
| Robert Cox | 8/10 | 5034 days | 1% |
| jenniferuk | 8/10 | 5319 days | 1% |
| Bowness | 8/10 | 5367 days | 1% |
| Sarah Smith | 7/10 | 5496 days | 1% |
Adjustments
No Adjustment
Several adjustments to the weighted average may be added to improve relevancy and credibility. Jacks Blowhole does not meet the criteria for any of these adjustments to apply.
Balancing Adjustment
3.23% Adjustment
Every experience's review score is adjusted to balance out the disproportional number of negative reviews that are contributed.
You won't be surprised to learn that disgruntled folk are more likely to leave a review than happy ones. They are motivated to share their experience and warn others. We consider this a good thing and it's why reading the reviews is important. However we've learned it can misrepresent the experience in a more overall sense.
We apply a balancing adjustment to counteract this effect and ensure the ranking score is a more fair representation of the experience. This adjustment is applied equally to all experiences.
Final Ranking Score
82%
The final ranking score once any adjustments, ratings, and rounding has been applied. This value is recalculated each day and a short rolling average is applied. Therefore it may not be precisely accurate based on the other values presented.