Hi, 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
91.60%
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 | 2837 days | 100% |
| Cherie and Dan | 10/10 | 3177 days | 77% |
| Netta Tyler | 10/10 | 3229 days | 74% |
| Theerada Wongkaew | 10/10 | 3271 days | 71% |
| Gazmira Molina | 8/10 | 3314 days | 66% |
| Jessica Nasstrom | 8/10 | 3321 days | 66% |
| Adeline | 8/10 | 3326 days | 66% |
| Rebecca Pierce | 10/10 | 3352 days | 65% |
| Jane Simmons | 10/10 | 3474 days | 57% |
| Julia Clark | 9/10 | 3542 days | 52% |
| Kristina Breitwieser | 10/10 | 3547 days | 52% |
| Olivier Anciaux | 7/10 | 3560 days | 47% |
| Justine Hoffmann | 9/10 | 3592 days | 48% |
| Ruven Rintelmann | 9/10 | 3597 days | 48% |
| Niels Hoogendooen | 8/10 | 3610 days | 47% |
| Marie Brauherr | 10/10 | 3618 days | 47% |
| Luisa and Hannes | 8/10 | 3622 days | 46% |
| Christian Boudreau | 9/10 | 3640 days | 45% |
| Manuela Opprecht | 7/10 | 3972 days | 21% |
| Damaris Mayer | 3/10 | 3972 days | 11% |
| Sophie Huybrechts | 10/10 | 4014 days | 21% |
| Ally Cook | 9/10 | 4018 days | 20% |
| Jessie Sabine | 9/10 | 4317 days | 0% |
| Katrina Gamby | 10/10 | 4675 days | 30% |
| Sonia Sennane | 10/10 | 5029 days | 30% |
| Melanie Friessen | 9/10 | 5030 days | 30% |
| Barry Baily | 10/10 | 5041 days | 30% |
| Elisabeth | 9/10 | 5050 days | 30% |
| Lotte Foged | 8/10 | 5055 days | 30% |
| Anika | 8/10 | 5056 days | 30% |
| Paul | 8/10 | 5126 days | 30% |
| Elke & Charlotte | 9/10 | 5139 days | 30% |
| Kris Gijbels | 9/10 | 5372 days | 30% |
| Patrick Gloede | 10/10 | 5377 days | 30% |
| Norm and Sky | 9/10 | 5382 days | 30% |
| Roald and Ellen | 9/10 | 5383 days | 30% |
| B Kleven | 10/10 | 5388 days | 30% |
| Ann-Katrine & Sille | 10/10 | 5392 days | 30% |
| Erland Ostberg | 8/10 | 5396 days | 30% |
| Helene Descamps | 9/10 | 5410 days | 30% |
| Heather Deobald | 9/10 | 5412 days | 30% |
| Christina Fischer | 6/10 | 5417 days | 26% |
| Shoe | 10/10 | 5484 days | 30% |
| RobThexton | 10/10 | 5637 days | 30% |
| Martin | 9/10 | 5698 days | 30% |
| cpochin | 10/10 | 5728 days | 30% |
| John Casey | 10/10 | 5740 days | 30% |
| Peter Schmidt | 10/10 | 5759 days | 30% |
| Elisabeth Egerup | 10/10 | 5766 days | 30% |
| Vera Van Schie | 10/10 | 5767 days | 30% |
| Chris Glasg | 10/10 | 5767 days | 30% |
| Klass | 9/10 | 5773 days | 30% |
| Belinda Godhard | 9/10 | 5784 days | 30% |
| Theta | 9/10 | 5787 days | 30% |
| jamesg | 9/10 | 5847 days | 30% |
| Mille Winther | 10/10 | 5860 days | 30% |
| Christine Van Den Berg Michele Imbach | 10/10 | 5872 days | 30% |
| Eilahtan4 | 10/10 | 5910 days | 30% |
| NZDiver | 10/10 | 5971 days | 30% |
| Nikki Turner | 10/10 | 6014 days | 30% |
| Christine Dadd | 8/10 | 6081 days | 30% |
| KatieR | 10/10 | 6091 days | 30% |
| Michael Maddams | 9/10 | 6091 days | 30% |
| Russ C | 8/10 | 6093 days | 30% |
| danam | 10/10 | 6094 days | 30% |
| Katy1 | 9/10 | 6095 days | 30% |
| StefanieGermany | 9/10 | 6110 days | 30% |
| lannie | 9/10 | 6126 days | 30% |
| AbigailB | 10/10 | 6138 days | 30% |
| ReneeA | 10/10 | 6141 days | 30% |
| Ute | 9/10 | 6145 days | 30% |
| Annika | 10/10 | 6157 days | 30% |
| Salick | 9/10 | 6157 days | 30% |
| Thomas | 8/10 | 6164 days | 30% |
| Prentner | 10/10 | 6173 days | 30% |
| Evi | 9/10 | 6198 days | 30% |
| Limor | 8/10 | 6199 days | 30% |
| Christian | 10/10 | 6308 days | 30% |
| Lee Chapman | 10/10 | 6409 days | 30% |
| Jo and Tony | 10/10 | 6485 days | 30% |
| Lara Gema Conde | 5/10 | 6585 days | 22% |
| Trish | 10/10 | 6822 days | 30% |
| Fran | 8/10 | 6823 days | 30% |
| SueLinsk | 10/10 | 6823 days | 30% |
| Rosemary | 9/10 | 6823 days | 30% |
| Martin Christina | 9/10 | 6829 days | 30% |
| Meike | 8/10 | 6856 days | 30% |
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
-4.07% Adjustment
There may be an adjustment if this experience hasn't received any reviews within the last 42 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 | -4.01% |
| 198 | -4.03% |
| 199 | -4.05% |
| 200 | -4.07% |
| 201 | -4.09% |
| 202 | -4.11% |
| 203 | -4.13% |
| … | … |
Balancing Adjustment
1.37% 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.