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
92.39%
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 | 229 days | 91.69 | 100% | |
| Cherie and Dan | 10/10 | 569 days |  |
58.61 | 64% |
| Netta Tyler | 10/10 | 621 days | 40.6 | 44% | |
| Theerada Wongkaew | 10/10 | 663 days | |
41.49 | 45% |
| Gazmira Molina | 8/10 | 706 days | |
34.77 | 37% |
| Jessica Nasstrom | 8/10 | 713 days | |
33.75 | 36% |
| Adeline | 8/10 | 718 days | |
33.03 | 35% |
| Rebecca Pierce | 10/10 | 744 days | 24.52 | 26% | |
| Jane Simmons | 10/10 | 866 days | 13.31 | 14% | |
| Julia Clark | 9/10 | 934 days | 9.11 | 9% | |
| Kristina Breitwieser | 10/10 | 939 days | |
10.63 | 11% |
| Olivier Anciaux | 7/10 | 952 days | |
9.89 | 10% |
| Justine Hoffmann | 9/10 | 984 days | |
8.34 | 8% |
| Ruven Rintelmann | 9/10 | 989 days | |
8.14 | 8% |
| Niels Hoogendooen | 8/10 | 1002 days | |
7.64 | 8% |
| Marie Brauherr | 10/10 | 1010 days | |
7.37 | 7% |
| Luisa and Hannes | 8/10 | 1014 days | |
7.25 | 7% |
| Christian Boudreau | 9/10 | 1032 days | |
6.75 | 7% |
| Manuela Opprecht | 7/10 | 1364 days | 4.63 | 4% | |
| Damaris Mayer | 3/10 | 1364 days | |
5.14 | 5% |
| Sophie Huybrechts | 10/10 | 1406 days | |
5.49 | 5% |
| Ally Cook | 9/10 | 1410 days | |
5.48 | 5% |
| Jessie Sabine | 9/10 | 1709 days | |
4.99 | 5% |
| Katrina Gamby | 10/10 | 2067 days | |
4.4 | 4% |
| Sonia Sennane | 10/10 | 2421 days | |
3.82 | 3% |
| Melanie Friessen | 9/10 | 2422 days | |
3.82 | 3% |
| Barry Baily | 10/10 | 2433 days | |
3.8 | 3% |
| Elisabeth | 9/10 | 2442 days | |
3.79 | 3% |
| Lotte Foged | 8/10 | 2447 days | |
3.78 | 3% |
| Anika | 8/10 | 2448 days | |
3.78 | 3% |
| Paul | 8/10 | 2518 days | |
3.66 | 3% |
| Elke & Charlotte | 9/10 | 2531 days | |
3.64 | 3% |
| Kris Gijbels | 9/10 | 2764 days | |
3.26 | 3% |
| Patrick Gloede | 10/10 | 2769 days | |
3.25 | 3% |
| Norm and Sky | 9/10 | 2774 days | |
3.24 | 3% |
| Roald and Ellen | 9/10 | 2775 days | |
3.24 | 3% |
| B Kleven | 10/10 | 2780 days | |
3.23 | 3% |
| Ann-Katrine & Sille | 10/10 | 2784 days | |
3.22 | 3% |
| Erland Ostberg | 8/10 | 2788 days | |
3.22 | 3% |
| Helene Descamps | 9/10 | 2802 days | |
3.19 | 3% |
| Heather Deobald | 9/10 | 2804 days | |
3.19 | 3% |
| Christina Fischer | 6/10 | 2809 days | |
3.18 | 3% |
| Shoe | 10/10 | 2876 days | 2.56 | 2% | |
| RobThexton | 10/10 | 3029 days | 2.35 | 2% | |
| Martin | 9/10 | 3090 days | |
2.72 | 2% |
| cpochin | 10/10 | 3120 days | 2.23 | 2% | |
| John Casey | 10/10 | 3132 days | |
2.65 | 2% |
| Peter Schmidt | 10/10 | 3151 days | 2.18 | 2% | |
| Elisabeth Egerup | 10/10 | 3158 days | |
2.61 | 2% |
| Vera Van Schie | 10/10 | 3159 days | |
2.61 | 2% |
| Chris Glasg | 10/10 | 3159 days | |
2.61 | 2% |
| Klass | 9/10 | 3165 days | |
2.6 | 2% |
| Belinda Godhard | 9/10 | 3176 days | |
2.58 | 2% |
| Theta | 9/10 | 3179 days | 2.15 | 1% | |
| jamesg | 9/10 | 3239 days | |
2.48 | 2% |
| Mille Winther | 10/10 | 3252 days | |
2.45 | 2% |
| Christine Van Den Berg Michele Imbach | 10/10 | 3264 days | |
2.43 | 2% |
| Eilahtan4 | 10/10 | 3302 days | 1.98 | 1% | |
| NZDiver | 10/10 | 3363 days | 1.89 | 1% | |
| Nikki Turner | 10/10 | 3406 days | |
2.2 | 2% |
| Christine Dadd | 8/10 | 3473 days | |
2.09 | 1% |
| KatieR | 10/10 | 3483 days | |
2.07 | 1% |
| Michael Maddams | 9/10 | 3483 days | |
2.07 | 1% |
| Russ C | 8/10 | 3485 days | 1.73 | 1% | |
| danam | 10/10 | 3486 days | |
2.07 | 1% |
| Katy1 | 9/10 | 3487 days | |
2.07 | 1% |
| StefanieGermany | 9/10 | 3502 days | |
2.04 | 1% |
| lannie | 9/10 | 3518 days | |
2.02 | 1% |
| AbigailB | 10/10 | 3530 days | |
2.0 | 1% |
| ReneeA | 10/10 | 3533 days | |
1.99 | 1% |
| Ute | 9/10 | 3537 days | |
1.99 | 1% |
| Annika | 10/10 | 3549 days | |
1.97 | 1% |
| Salick | 9/10 | 3549 days | |
1.97 | 1% |
| Thomas | 8/10 | 3556 days | |
1.95 | 1% |
| Prentner | 10/10 | 3565 days | |
1.94 | 1% |
| Evi | 9/10 | 3590 days | |
1.9 | 1% |
| Limor | 8/10 | 3591 days | |
1.9 | 1% |
| Christian | 10/10 | 3701 days | |
1.72 | 1% |
| Lee Chapman | 10/10 | 3801 days | 1.29 | 1% | |
| Jo and Tony | 10/10 | 3877 days | |
1.43 | 1% |
| Lara Gema Conde | 5/10 | 3977 days | |
1.26 | 0% |
| Trish | 10/10 | 4214 days | |
0.87 | 0% |
| Fran | 8/10 | 4215 days | |
0.87 | 0% |
| SueLinsk | 10/10 | 4215 days | |
0.87 | 0% |
| Rosemary | 9/10 | 4215 days | |
0.87 | 0% |
| Martin Christina | 9/10 | 4221 days | |
0.86 | 0% |
| Meike | 8/10 | 4248 days | |
0.82 | 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
-4.18% 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 209 days. Adjustments are according to the following table.
| Days | Adjustment |
|---|---|
| … | … |
| 206 | -4.12% |
| 207 | -4.14% |
| 208 | -4.16% |
| 209 | -4.18% |
| 210 | -4.20% |
| 211 | -4.22% |
| 212 | -4.24% |
| … | … |
Final Ranking Score
88%
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.