Ranking Score Explained
Hi there, 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.
Nick Morrison
Rankers owner
Dive Tutukaka
Valid Reviews
87 Valid Reviews
The Dive Tutukaka experience has a total of 87 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 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
92.49%
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 | Face-to-Face | Weight | Relative Weight |
|---|---|---|---|---|---|
| Barbara McNab | 10/10 | 328 days | 82.95 | 100% | |
| Cherie and Dan | 10/10 | 668 days |  |
40.67 | 49% |
| Netta Tyler | 10/10 | 720 days | 27.28 | 32% | |
| Theerada Wongkaew | 10/10 | 762 days | |
27.09 | 32% |
| Gazmira Molina | 8/10 | 805 days | |
21.99 | 26% |
| Jessica Nasstrom | 8/10 | 812 days | |
21.23 | 25% |
| Adeline | 8/10 | 817 days | |
20.7 | 24% |
| Rebecca Pierce | 10/10 | 843 days | 15.06 | 18% | |
| Jane Simmons | 10/10 | 965 days | 7.68 | 9% | |
| Julia Clark | 9/10 | 1033 days | 5.61 | 6% | |
| Kristina Breitwieser | 10/10 | 1038 days | |
6.62 | 7% |
| Olivier Anciaux | 7/10 | 1051 days | |
6.37 | 7% |
| Justine Hoffmann | 9/10 | 1083 days | |
6.03 | 7% |
| Ruven Rintelmann | 9/10 | 1088 days | |
6.01 | 7% |
| Niels Hoogendooen | 8/10 | 1101 days | |
5.99 | 6% |
| Marie Brauherr | 10/10 | 1109 days | |
5.98 | 6% |
| Luisa and Hannes | 8/10 | 1113 days | |
5.97 | 6% |
| Christian Boudreau | 9/10 | 1131 days | |
5.94 | 6% |
| Manuela Opprecht | 7/10 | 1463 days | 4.5 | 5% | |
| Damaris Mayer | 3/10 | 1463 days | |
4.99 | 5% |
| Sophie Huybrechts | 10/10 | 1505 days | |
5.33 | 6% |
| Ally Cook | 9/10 | 1509 days | |
5.32 | 6% |
| Jessie Sabine | 9/10 | 1808 days | |
4.83 | 5% |
| Katrina Gamby | 10/10 | 2166 days | |
4.24 | 4% |
| Sonia Sennane | 10/10 | 2520 days | |
3.66 | 4% |
| Melanie Friessen | 9/10 | 2521 days | |
3.66 | 4% |
| Barry Baily | 10/10 | 2532 days | |
3.64 | 4% |
| Elisabeth | 9/10 | 2541 days | |
3.62 | 4% |
| Lotte Foged | 8/10 | 2546 days | |
3.61 | 4% |
| Anika | 8/10 | 2547 days | |
3.61 | 4% |
| Paul | 8/10 | 2617 days | |
3.5 | 3% |
| Elke & Charlotte | 9/10 | 2630 days | |
3.48 | 3% |
| Kris Gijbels | 9/10 | 2863 days | |
3.09 | 3% |
| Patrick Gloede | 10/10 | 2868 days | |
3.09 | 3% |
| Norm and Sky | 9/10 | 2873 days | |
3.08 | 3% |
| Roald and Ellen | 9/10 | 2874 days | |
3.08 | 3% |
| B Kleven | 10/10 | 2879 days | |
3.07 | 3% |
| Ann-Katrine & Sille | 10/10 | 2883 days | |
3.06 | 3% |
| Erland Ostberg | 8/10 | 2887 days | |
3.05 | 3% |
| Helene Descamps | 9/10 | 2901 days | |
3.03 | 3% |
| Heather Deobald | 9/10 | 2903 days | |
3.03 | 3% |
| Christina Fischer | 6/10 | 2908 days | |
3.02 | 3% |
| Shoe | 10/10 | 2975 days | 2.42 | 2% | |
| RobThexton | 10/10 | 3128 days | 2.22 | 2% | |
| Martin | 9/10 | 3189 days | |
2.56 | 2% |
| cpochin | 10/10 | 3219 days | 2.09 | 2% | |
| John Casey | 10/10 | 3231 days | |
2.49 | 2% |
| Peter Schmidt | 10/10 | 3250 days | 2.05 | 2% | |
| Elisabeth Egerup | 10/10 | 3257 days | |
2.45 | 2% |
| Vera Van Schie | 10/10 | 3258 days | |
2.44 | 2% |
| Chris Glasg | 10/10 | 3258 days | |
2.44 | 2% |
| Klass | 9/10 | 3264 days | |
2.43 | 2% |
| Belinda Godhard | 9/10 | 3275 days | |
2.42 | 2% |
| Theta | 9/10 | 3278 days | 2.01 | 2% | |
| jamesg | 9/10 | 3338 days | |
2.31 | 2% |
| Mille Winther | 10/10 | 3351 days | |
2.29 | 2% |
| Christine Van Den Berg Michele Imbach | 10/10 | 3363 days | |
2.27 | 2% |
| Eilahtan4 | 10/10 | 3401 days | 1.84 | 1% | |
| NZDiver | 10/10 | 3462 days | 1.76 | 1% | |
| Nikki Turner | 10/10 | 3505 days | |
2.04 | 2% |
| Christine Dadd | 8/10 | 3572 days | |
1.93 | 2% |
| KatieR | 10/10 | 3582 days | |
1.91 | 2% |
| Michael Maddams | 9/10 | 3582 days | |
1.91 | 2% |
| Russ C | 8/10 | 3584 days | 1.59 | 1% | |
| danam | 10/10 | 3585 days | |
1.91 | 2% |
| Katy1 | 9/10 | 3586 days | |
1.91 | 2% |
| StefanieGermany | 9/10 | 3601 days | |
1.88 | 1% |
| lannie | 9/10 | 3617 days | |
1.85 | 1% |
| AbigailB | 10/10 | 3629 days | |
1.83 | 1% |
| ReneeA | 10/10 | 3632 days | |
1.83 | 1% |
| Ute | 9/10 | 3636 days | |
1.82 | 1% |
| Annika | 10/10 | 3648 days | |
1.8 | 1% |
| Salick | 9/10 | 3648 days | |
1.8 | 1% |
| Thomas | 8/10 | 3655 days | |
1.79 | 1% |
| Prentner | 10/10 | 3664 days | |
1.78 | 1% |
| Evi | 9/10 | 3689 days | |
1.74 | 1% |
| Limor | 8/10 | 3690 days | |
1.73 | 1% |
| Christian | 10/10 | 3799 days | |
1.56 | 1% |
| Lee Chapman | 10/10 | 3900 days | 1.16 | 1% | |
| Jo and Tony | 10/10 | 3976 days | |
1.26 | 1% |
| Lara Gema Conde | 5/10 | 4076 days | |
1.1 | 1% |
| Trish | 10/10 | 4313 days | |
0.71 | 0% |
| Fran | 8/10 | 4314 days | |
0.71 | 0% |
| SueLinsk | 10/10 | 4314 days | |
0.71 | 0% |
| Rosemary | 9/10 | 4314 days | |
0.71 | 0% |
| Martin Christina | 9/10 | 4320 days | |
0.7 | 0% |
| Meike | 8/10 | 4347 days | |
0.65 | 0% |
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
-6.16% Adjustment
There may be an adjustment if an 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 364 days.
The Dive Tutukaka experience has been adjusted for 308 days. Adjustments are according to the following table.
| Days | Adjustment |
|---|---|
| … | … |
| 305 | -6.10% |
| 306 | -6.12% |
| 307 | -6.14% |
| 308 | -6.16% |
| 309 | -6.18% |
| 310 | -6.20% |
| 311 | -6.22% |
| … | … |
Final Ranking Score
86%
The final ranking score once adjustments and rounding has been applied. This value is cached and recalculated each day. Therefore it may not be precisely accurate based on the other values presented.
If you have any questions or comments about our ranking score calculation please get in touch at info@rankers.co.nz.