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.
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
92.17%
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 | 598 days | 44.14 | 100% | |
| Cherie and Dan | 10/10 | 938 days |  |
8.91 | 20% |
| Netta Tyler | 10/10 | 991 days | 6.71 | 15% | |
| Theerada Wongkaew | 10/10 | 1032 days | |
5.63 | 13% |
| Gazmira Molina | 8/10 | 1075 days | |
4.81 | 11% |
| Jessica Nasstrom | 8/10 | 1082 days | |
4.78 | 11% |
| Adeline | 8/10 | 1087 days | |
4.76 | 11% |
| Rebecca Pierce | 10/10 | 1114 days | 4.97 | 11% | |
| Jane Simmons | 10/10 | 1236 days | 4.76 | 11% | |
| Julia Clark | 9/10 | 1303 days | 4.64 | 11% | |
| Kristina Breitwieser | 10/10 | 1308 days | |
4.64 | 11% |
| Olivier Anciaux | 7/10 | 1321 days | |
4.2 | 10% |
| Justine Hoffmann | 9/10 | 1353 days | |
4.56 | 10% |
| Ruven Rintelmann | 9/10 | 1358 days | |
4.55 | 10% |
| Niels Hoogendooen | 8/10 | 1371 days | |
4.3 | 10% |
| Marie Brauherr | 10/10 | 1379 days | |
4.51 | 10% |
| Luisa and Hannes | 8/10 | 1383 days | |
4.28 | 10% |
| Christian Boudreau | 9/10 | 1401 days | |
4.48 | 10% |
| Manuela Opprecht | 7/10 | 1733 days | 3.56 | 8% | |
| Damaris Mayer | 3/10 | 1733 days | |
3.01 | 7% |
| Sophie Huybrechts | 10/10 | 1775 days | |
3.84 | 9% |
| Ally Cook | 9/10 | 1779 days | |
3.83 | 9% |
| Jessie Sabine | 9/10 | 2078 days | |
3.32 | 8% |
| Katrina Gamby | 10/10 | 2436 days | |
2.7 | 6% |
| Sonia Sennane | 10/10 | 2790 days | |
2.1 | 5% |
| Melanie Friessen | 9/10 | 2791 days | |
2.1 | 5% |
| Barry Baily | 10/10 | 2802 days | |
2.08 | 5% |
| Elisabeth | 9/10 | 2811 days | |
2.06 | 5% |
| Lotte Foged | 8/10 | 2816 days | |
1.95 | 4% |
| Anika | 8/10 | 2817 days | |
1.95 | 4% |
| Paul | 8/10 | 2887 days | |
1.83 | 4% |
| Elke & Charlotte | 9/10 | 2900 days | |
1.91 | 4% |
| Kris Gijbels | 9/10 | 3133 days | |
1.51 | 3% |
| Patrick Gloede | 10/10 | 3138 days | |
1.5 | 3% |
| Norm and Sky | 9/10 | 3143 days | |
1.49 | 3% |
| Roald and Ellen | 9/10 | 3144 days | |
1.49 | 3% |
| B Kleven | 10/10 | 3149 days | |
1.48 | 3% |
| Ann-Katrine & Sille | 10/10 | 3153 days | |
1.48 | 3% |
| Erland Ostberg | 8/10 | 3157 days | |
1.4 | 3% |
| Helene Descamps | 9/10 | 3171 days | |
1.45 | 3% |
| Heather Deobald | 9/10 | 3173 days | |
1.44 | 3% |
| Christina Fischer | 6/10 | 3178 days | |
1.19 | 3% |
| Shoe | 10/10 | 3245 days | 1.32 | 3% | |
| RobThexton | 10/10 | 3398 days | 1.06 | 2% | |
| Martin | 9/10 | 3459 days | |
0.95 | 2% |
| cpochin | 10/10 | 3489 days | 0.9 | 2% | |
| John Casey | 10/10 | 3501 days | |
0.88 | 2% |
| Peter Schmidt | 10/10 | 3520 days | 0.85 | 2% | |
| Elisabeth Egerup | 10/10 | 3527 days | |
0.84 | 2% |
| Vera Van Schie | 10/10 | 3528 days | |
0.83 | 2% |
| Chris Glasg | 10/10 | 3528 days | |
0.83 | 2% |
| Klass | 9/10 | 3534 days | |
0.82 | 2% |
| Belinda Godhard | 9/10 | 3545 days | |
0.8 | 2% |
| Theta | 9/10 | 3548 days | 0.8 | 2% | |
| jamesg | 9/10 | 3608 days | |
0.7 | 2% |
| Mille Winther | 10/10 | 3621 days | |
0.67 | 2% |
| Christine Van Den Berg Michele Imbach | 10/10 | 3633 days | |
0.65 | 1% |
| Eilahtan4 | 10/10 | 3671 days | 0.59 | 1% | |
| NZDiver | 10/10 | 3732 days | 0.48 | 1% | |
| Nikki Turner | 10/10 | 3775 days | |
0.41 | 1% |
| Christine Dadd | 8/10 | 3842 days | |
0.28 | 1% |
| KatieR | 10/10 | 3852 days | |
0.28 | 1% |
| Michael Maddams | 9/10 | 3852 days | |
0.28 | 1% |
| Russ C | 8/10 | 3854 days | 0.26 | 1% | |
| danam | 10/10 | 3855 days | |
0.27 | 1% |
| Katy1 | 9/10 | 3856 days | |
0.27 | 1% |
| StefanieGermany | 9/10 | 3871 days | |
0.25 | 1% |
| lannie | 9/10 | 3887 days | |
0.22 | 0% |
| AbigailB | 10/10 | 3899 days | |
0.2 | 0% |
| ReneeA | 10/10 | 3902 days | |
0.19 | 0% |
| Ute | 9/10 | 3906 days | |
0.19 | 0% |
| Annika | 10/10 | 3918 days | |
0.17 | 0% |
| Salick | 9/10 | 3918 days | |
0.17 | 0% |
| Thomas | 8/10 | 3925 days | |
0.15 | 0% |
| Prentner | 10/10 | 3934 days | |
0.14 | 0% |
| Evi | 9/10 | 3959 days | |
0.1 | 0% |
| Limor | 8/10 | 3960 days | |
0.09 | 0% |
| Christian | 10/10 | 4070 days | |
0.0 | 0% |
| Lee Chapman | 10/10 | 4170 days | 0.0 | 0% | |
| Jo and Tony | 10/10 | 4246 days | |
0.0 | 0% |
| Lara Gema Conde | 5/10 | 4346 days | |
0.0 | 0% |
| Trish | 10/10 | 4583 days | |
0.0 | 0% |
| Fran | 8/10 | 4584 days | |
0.0 | 0% |
| SueLinsk | 10/10 | 4584 days | |
0.0 | 0% |
| Rosemary | 9/10 | 4584 days | |
0.0 | 0% |
| Martin Christina | 9/10 | 4590 days | |
0.0 | 0% |
| Meike | 8/10 | 4617 days | |
0.0 | 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
-3.98% 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 199 days.
The Dive Tutukaka experience has been adjusted for 199 days. Adjustments are according to the following table.
| Days | Adjustment |
|---|---|
| … | … |
| 196 | -3.92% |
| 197 | -3.94% |
| 198 | -3.96% |
| 199 | -3.98% |
| 200 | -4.00% |
| 201 | -4.02% |
| 202 | -4.04% |
| … | … |
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.