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
91.90%
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 | 88 days | 98.77 | 100% | |
| Cherie and Dan | 10/10 | 428 days |  |
85.17 | 86% |
| Netta Tyler | 10/10 | 481 days | 63.34 | 64% | |
| Theerada Wongkaew | 10/10 | 522 days | |
68.19 | 69% |
| Gazmira Molina | 8/10 | 565 days | |
59.41 | 60% |
| Jessica Nasstrom | 8/10 | 572 days | |
58.01 | 58% |
| Adeline | 8/10 | 577 days | |
57.02 | 57% |
| Rebecca Pierce | 10/10 | 604 days | 43.2 | 43% | |
| Jane Simmons | 10/10 | 726 days | 26.58 | 26% | |
| Julia Clark | 9/10 | 793 days | 19.45 | 19% | |
| Kristina Breitwieser | 10/10 | 798 days | |
22.77 | 22% |
| Olivier Anciaux | 7/10 | 811 days | |
21.34 | 21% |
| Justine Hoffmann | 9/10 | 843 days | |
18.08 | 17% |
| Ruven Rintelmann | 9/10 | 848 days | |
17.6 | 17% |
| Niels Hoogendooen | 8/10 | 861 days | |
16.41 | 16% |
| Marie Brauherr | 10/10 | 869 days | |
15.71 | 15% |
| Luisa and Hannes | 8/10 | 873 days | |
15.37 | 15% |
| Christian Boudreau | 9/10 | 891 days | |
13.91 | 13% |
| Manuela Opprecht | 7/10 | 1223 days | 4.82 | 4% | |
| Damaris Mayer | 3/10 | 1223 days | |
5.36 | 4% |
| Sophie Huybrechts | 10/10 | 1265 days | |
5.72 | 5% |
| Ally Cook | 9/10 | 1269 days | |
5.71 | 5% |
| Jessie Sabine | 9/10 | 1568 days | |
5.22 | 4% |
| Katrina Gamby | 10/10 | 1926 days | |
4.63 | 4% |
| Sonia Sennane | 10/10 | 2280 days | |
4.05 | 3% |
| Melanie Friessen | 9/10 | 2281 days | |
4.05 | 3% |
| Barry Baily | 10/10 | 2292 days | |
4.03 | 3% |
| Elisabeth | 9/10 | 2301 days | |
4.02 | 3% |
| Lotte Foged | 8/10 | 2306 days | |
4.01 | 3% |
| Anika | 8/10 | 2307 days | |
4.01 | 3% |
| Paul | 8/10 | 2377 days | |
3.89 | 3% |
| Elke & Charlotte | 9/10 | 2390 days | |
3.87 | 3% |
| Kris Gijbels | 9/10 | 2623 days | |
3.49 | 2% |
| Patrick Gloede | 10/10 | 2628 days | |
3.48 | 2% |
| Norm and Sky | 9/10 | 2633 days | |
3.47 | 2% |
| Roald and Ellen | 9/10 | 2634 days | |
3.47 | 2% |
| B Kleven | 10/10 | 2639 days | |
3.46 | 2% |
| Ann-Katrine & Sille | 10/10 | 2643 days | |
3.46 | 2% |
| Erland Ostberg | 8/10 | 2647 days | |
3.45 | 2% |
| Helene Descamps | 9/10 | 2661 days | |
3.43 | 2% |
| Heather Deobald | 9/10 | 2663 days | |
3.42 | 2% |
| Christina Fischer | 6/10 | 2668 days | |
3.41 | 2% |
| Shoe | 10/10 | 2735 days | 2.75 | 2% | |
| RobThexton | 10/10 | 2888 days | 2.54 | 2% | |
| Martin | 9/10 | 2949 days | |
2.95 | 2% |
| cpochin | 10/10 | 2979 days | 2.42 | 1% | |
| John Casey | 10/10 | 2991 days | |
2.88 | 2% |
| Peter Schmidt | 10/10 | 3010 days | 2.38 | 1% | |
| Elisabeth Egerup | 10/10 | 3017 days | |
2.84 | 2% |
| Vera Van Schie | 10/10 | 3018 days | |
2.84 | 2% |
| Chris Glasg | 10/10 | 3018 days | |
2.84 | 2% |
| Klass | 9/10 | 3024 days | |
2.83 | 2% |
| Belinda Godhard | 9/10 | 3035 days | |
2.81 | 2% |
| Theta | 9/10 | 3038 days | 2.34 | 1% | |
| jamesg | 9/10 | 3098 days | |
2.71 | 2% |
| Mille Winther | 10/10 | 3111 days | |
2.69 | 2% |
| Christine Van Den Berg Michele Imbach | 10/10 | 3123 days | |
2.67 | 2% |
| Eilahtan4 | 10/10 | 3161 days | 2.17 | 1% | |
| NZDiver | 10/10 | 3222 days | 2.09 | 1% | |
| Nikki Turner | 10/10 | 3265 days | |
2.43 | 1% |
| Christine Dadd | 8/10 | 3332 days | |
2.32 | 1% |
| KatieR | 10/10 | 3342 days | |
2.31 | 1% |
| Michael Maddams | 9/10 | 3342 days | |
2.31 | 1% |
| Russ C | 8/10 | 3344 days | 1.92 | 1% | |
| danam | 10/10 | 3345 days | |
2.3 | 1% |
| Katy1 | 9/10 | 3346 days | |
2.3 | 1% |
| StefanieGermany | 9/10 | 3361 days | |
2.28 | 1% |
| lannie | 9/10 | 3377 days | |
2.25 | 1% |
| AbigailB | 10/10 | 3389 days | |
2.23 | 1% |
| ReneeA | 10/10 | 3392 days | |
2.22 | 1% |
| Ute | 9/10 | 3396 days | |
2.22 | 1% |
| Annika | 10/10 | 3408 days | |
2.2 | 1% |
| Salick | 9/10 | 3408 days | |
2.2 | 1% |
| Thomas | 8/10 | 3415 days | |
2.19 | 1% |
| Prentner | 10/10 | 3424 days | |
2.17 | 1% |
| Evi | 9/10 | 3449 days | |
2.13 | 1% |
| Limor | 8/10 | 3450 days | |
2.13 | 1% |
| Christian | 10/10 | 3560 days | |
1.95 | 1% |
| Lee Chapman | 10/10 | 3660 days | 1.49 | 0% | |
| Jo and Tony | 10/10 | 3736 days | |
1.66 | 1% |
| Lara Gema Conde | 5/10 | 3836 days | |
1.49 | 0% |
| Trish | 10/10 | 4073 days | |
1.1 | 0% |
| Fran | 8/10 | 4074 days | |
1.1 | 0% |
| SueLinsk | 10/10 | 4074 days | |
1.1 | 0% |
| Rosemary | 9/10 | 4074 days | |
1.1 | 0% |
| Martin Christina | 9/10 | 4080 days | |
1.09 | 0% |
| Meike | 8/10 | 4107 days | |
1.05 | 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
-1.38% 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 69 days. Adjustments are according to the following table.
| Days | Adjustment |
|---|---|
| … | … |
| 66 | -1.32% |
| 67 | -1.34% |
| 68 | -1.36% |
| 69 | -1.38% |
| 70 | -1.40% |
| 71 | -1.42% |
| 72 | -1.44% |
| … | … |
Final Ranking Score
91%
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.