Hey, 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 Dive Tutukaka.
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.
Dive Tutukaka
Valid Reviews
87 Valid Reviews
The Dive Tutukaka experience has a total of 88 reviews. There are 87 valid reviews that are included when calculating the ranking score and 1 invalid review 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 87 valid reviews:
| Rating | Count | Percentage | |
|---|---|---|---|
| 10/10 | 39 |
|
45% |
| 9/10 | 28 |
|
32% |
| 8/10 | 15 |
|
17% |
| 7/10 | 2 |
|
2% |
| 6/10 | 1 |
|
1% |
| 5/10 | 1 |
|
1% |
| 4/10 | 0 |
|
0% |
| 3/10 | 1 |
|
1% |
| 2/10 | 0 |
|
0% |
| 1/10 | 0 |
|
0% |
90.80% Average
The raw data average (mean) for all the Dive Tutukaka valid reviews is 90.80% and is based on 87 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
72 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 87 valid reviews, the experience has 72 face-to-face reviews collected during interviews by our team.
Below is the distribution of ratings for the 72 face-to-face reviews:
| Rating | Count | Percentage | |
|---|---|---|---|
| 10/10 | 28 |
|
39% |
| 9/10 | 26 |
|
36% |
| 8/10 | 14 |
|
19% |
| 7/10 | 1 |
|
1% |
| 6/10 | 1 |
|
1% |
| 5/10 | 1 |
|
1% |
| 4/10 | 0 |
|
0% |
| 3/10 | 1 |
|
1% |
| 2/10 | 0 |
|
0% |
| 1/10 | 0 |
|
0% |
89.86% Average
The raw data average (mean) for all the Dive Tutukaka face-to-face reviews is 89.86% and is based on 72 face-to-face reviews. This value is not used to calculate the ranking score and it only provided here for comparison purposes.
Weighted Average
91.73%
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 |
|---|---|---|---|
| Barbara McNab | 10/10 | 2953 days | 100% |
| Cherie and Dan | 10/10 | 3293 days | 73% |
| Netta Tyler | 10/10 | 3345 days | 69% |
| Theerada Wongkaew | 10/10 | 3387 days | 66% |
| Gazmira Molina | 8/10 | 3430 days | 61% |
| Jessica Nasstrom | 8/10 | 3437 days | 60% |
| Adeline | 8/10 | 3442 days | 60% |
| Rebecca Pierce | 10/10 | 3468 days | 59% |
| Jane Simmons | 10/10 | 3590 days | 50% |
| Julia Clark | 9/10 | 3658 days | 44% |
| Kristina Breitwieser | 10/10 | 3663 days | 44% |
| Olivier Anciaux | 7/10 | 3676 days | 39% |
| Justine Hoffmann | 9/10 | 3708 days | 40% |
| Ruven Rintelmann | 9/10 | 3713 days | 40% |
| Niels Hoogendooen | 8/10 | 3726 days | 38% |
| Marie Brauherr | 10/10 | 3734 days | 38% |
| Luisa and Hannes | 8/10 | 3738 days | 37% |
| Christian Boudreau | 9/10 | 3756 days | 36% |
| Manuela Opprecht | 7/10 | 4088 days | 9% |
| Damaris Mayer | 3/10 | 4088 days | 0% |
| Sophie Huybrechts | 10/10 | 4130 days | 7% |
| Ally Cook | 9/10 | 4134 days | 7% |
| Jessie Sabine | 9/10 | 4433 days | 27% |
| Katrina Gamby | 10/10 | 4791 days | 28% |
| Sonia Sennane | 10/10 | 5145 days | 28% |
| Melanie Friessen | 9/10 | 5146 days | 27% |
| Barry Baily | 10/10 | 5157 days | 28% |
| Elisabeth | 9/10 | 5166 days | 27% |
| Lotte Foged | 8/10 | 5171 days | 27% |
| Anika | 8/10 | 5172 days | 27% |
| Paul | 8/10 | 5242 days | 27% |
| Elke & Charlotte | 9/10 | 5255 days | 27% |
| Kris Gijbels | 9/10 | 5488 days | 27% |
| Patrick Gloede | 10/10 | 5493 days | 28% |
| Norm and Sky | 9/10 | 5498 days | 27% |
| Roald and Ellen | 9/10 | 5499 days | 27% |
| B Kleven | 10/10 | 5504 days | 28% |
| Ann-Katrine & Sille | 10/10 | 5508 days | 28% |
| Erland Ostberg | 8/10 | 5512 days | 27% |
| Helene Descamps | 9/10 | 5526 days | 27% |
| Heather Deobald | 9/10 | 5528 days | 27% |
| Christina Fischer | 6/10 | 5533 days | 22% |
| Shoe | 10/10 | 5600 days | 28% |
| RobThexton | 10/10 | 5753 days | 28% |
| Martin | 9/10 | 5814 days | 27% |
| cpochin | 10/10 | 5844 days | 28% |
| John Casey | 10/10 | 5856 days | 28% |
| Peter Schmidt | 10/10 | 5875 days | 28% |
| Elisabeth Egerup | 10/10 | 5882 days | 28% |
| Vera Van Schie | 10/10 | 5883 days | 28% |
| Chris Glasg | 10/10 | 5883 days | 28% |
| Klass | 9/10 | 5889 days | 27% |
| Belinda Godhard | 9/10 | 5900 days | 27% |
| Theta | 9/10 | 5903 days | 27% |
| jamesg | 9/10 | 5963 days | 27% |
| Mille Winther | 10/10 | 5976 days | 28% |
| Christine Van Den Berg Michele Imbach | 10/10 | 5988 days | 28% |
| Eilahtan4 | 10/10 | 6026 days | 28% |
| NZDiver | 10/10 | 6087 days | 28% |
| Nikki Turner | 10/10 | 6130 days | 28% |
| Christine Dadd | 8/10 | 6197 days | 27% |
| KatieR | 10/10 | 6207 days | 28% |
| Michael Maddams | 9/10 | 6207 days | 27% |
| Russ C | 8/10 | 6209 days | 27% |
| danam | 10/10 | 6210 days | 28% |
| Katy1 | 9/10 | 6211 days | 27% |
| StefanieGermany | 9/10 | 6226 days | 27% |
| lannie | 9/10 | 6242 days | 27% |
| AbigailB | 10/10 | 6254 days | 28% |
| ReneeA | 10/10 | 6257 days | 28% |
| Ute | 9/10 | 6261 days | 27% |
| Annika | 10/10 | 6273 days | 28% |
| Salick | 9/10 | 6273 days | 27% |
| Thomas | 8/10 | 6280 days | 27% |
| Prentner | 10/10 | 6289 days | 28% |
| Evi | 9/10 | 6314 days | 27% |
| Limor | 8/10 | 6315 days | 27% |
| Christian | 10/10 | 6424 days | 28% |
| Lee Chapman | 10/10 | 6525 days | 28% |
| Jo and Tony | 10/10 | 6601 days | 28% |
| Lara Gema Conde | 5/10 | 6701 days | 18% |
| Trish | 10/10 | 6938 days | 28% |
| Fran | 8/10 | 6939 days | 27% |
| SueLinsk | 10/10 | 6939 days | 28% |
| Rosemary | 9/10 | 6939 days | 27% |
| Martin Christina | 9/10 | 6945 days | 27% |
| Meike | 8/10 | 6972 days | 27% |
Adjustments
Several adjustments to the weighted average are added to improve relevancy and credibility. These adjustments apply equally to all experiences that meet the criteria.
Sample Size Adjustment
No Adjustment
A reasonable number of reviews are necessary in order for the average to be credible and for an experience to take a prime position within the ranking tables. As such, experiences with only a few reviews have a moderated score. This does not mean that the experience or the reviews can't be trusted. The Dive Tutukaka experience has plenty of reviews and does not meet the criteria for any adjustment.
Recent Reviews Adjustment
-3.74% Adjustment
There may be an adjustment if this experience hasn't received any reviews within the last 60 days. However the Dive Tutukaka experience does not meet the criteria for any adjustment.
In addition, an experience's ranking score may be adjusted for each day there is no new ranking. After 1 day the adjustment comes into effect. The maximum number of days that can be adjusted for is 200 days. Due to the seasonal nature of many businesses, this adjustment is applied dynamically throughout the year.
The Dive Tutukaka experience has been adjusted for 200 days. Adjustments are according to the following table.
| Days | Adjustment |
|---|---|
| … | … |
| 197 | -3.68% |
| 198 | -3.70% |
| 199 | -3.72% |
| 200 | -3.74% |
| 201 | -3.76% |
| 202 | -3.77% |
| 203 | -3.79% |
| … | … |
Balancing Adjustment
1.29% 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 customers 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
89%
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.