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 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
90.23%
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 | 829 days | 16.21 | 100% | |
| Cherie and Dan | 10/10 | 1169 days |  |
4.86 | 30% |
| Netta Tyler | 10/10 | 1221 days | 4.75 | 29% | |
| Theerada Wongkaew | 10/10 | 1263 days | |
4.67 | 29% |
| Gazmira Molina | 8/10 | 1306 days | |
4.36 | 27% |
| Jessica Nasstrom | 8/10 | 1313 days | |
4.34 | 27% |
| Adeline | 8/10 | 1318 days | |
4.34 | 27% |
| Rebecca Pierce | 10/10 | 1344 days | 4.51 | 28% | |
| Jane Simmons | 10/10 | 1466 days | 4.27 | 26% | |
| Julia Clark | 9/10 | 1534 days | 4.14 | 26% | |
| Kristina Breitwieser | 10/10 | 1539 days | |
4.13 | 25% |
| Olivier Anciaux | 7/10 | 1552 days | |
3.74 | 23% |
| Justine Hoffmann | 9/10 | 1584 days | |
4.04 | 25% |
| Ruven Rintelmann | 9/10 | 1589 days | |
4.03 | 25% |
| Niels Hoogendooen | 8/10 | 1602 days | |
3.81 | 23% |
| Marie Brauherr | 10/10 | 1610 days | |
3.99 | 25% |
| Luisa and Hannes | 8/10 | 1614 days | |
3.79 | 23% |
| Christian Boudreau | 9/10 | 1632 days | |
3.95 | 24% |
| Manuela Opprecht | 7/10 | 1964 days | 3.0 | 19% | |
| Damaris Mayer | 3/10 | 1964 days | |
2.54 | 16% |
| Sophie Huybrechts | 10/10 | 2006 days | |
3.22 | 20% |
| Ally Cook | 9/10 | 2010 days | |
3.21 | 20% |
| Jessie Sabine | 9/10 | 2309 days | |
2.62 | 16% |
| Katrina Gamby | 10/10 | 2667 days | |
1.92 | 12% |
| Sonia Sennane | 10/10 | 3021 days | |
1.23 | 8% |
| Melanie Friessen | 9/10 | 3022 days | |
1.23 | 8% |
| Barry Baily | 10/10 | 3033 days | |
1.21 | 7% |
| Elisabeth | 9/10 | 3042 days | |
1.19 | 7% |
| Lotte Foged | 8/10 | 3047 days | |
1.12 | 7% |
| Anika | 8/10 | 3048 days | |
1.12 | 7% |
| Paul | 8/10 | 3118 days | |
0.99 | 6% |
| Elke & Charlotte | 9/10 | 3131 days | |
1.02 | 6% |
| Kris Gijbels | 9/10 | 3364 days | |
0.56 | 3% |
| Patrick Gloede | 10/10 | 3369 days | |
0.55 | 3% |
| Norm and Sky | 9/10 | 3374 days | |
0.54 | 3% |
| Roald and Ellen | 9/10 | 3375 days | |
0.54 | 3% |
| B Kleven | 10/10 | 3380 days | |
0.53 | 3% |
| Ann-Katrine & Sille | 10/10 | 3384 days | |
0.52 | 3% |
| Erland Ostberg | 8/10 | 3388 days | |
0.49 | 3% |
| Helene Descamps | 9/10 | 3402 days | |
0.49 | 3% |
| Heather Deobald | 9/10 | 3404 days | |
0.48 | 3% |
| Christina Fischer | 6/10 | 3409 days | |
0.39 | 2% |
| Shoe | 10/10 | 3476 days | 0.34 | 2% | |
| RobThexton | 10/10 | 3629 days | 0.04 | 0% | |
| Martin | 9/10 | 3690 days | |
0.0 | 0% |
| cpochin | 10/10 | 3720 days | 0.0 | 0% | |
| John Casey | 10/10 | 3732 days | |
0.0 | 0% |
| Peter Schmidt | 10/10 | 3751 days | 0.0 | 0% | |
| Elisabeth Egerup | 10/10 | 3758 days | |
0.0 | 0% |
| Vera Van Schie | 10/10 | 3759 days | |
0.0 | 0% |
| Chris Glasg | 10/10 | 3759 days | |
0.0 | 0% |
| Klass | 9/10 | 3765 days | |
0.0 | 0% |
| Belinda Godhard | 9/10 | 3776 days | |
0.0 | 0% |
| Theta | 9/10 | 3779 days | 0.0 | 0% | |
| jamesg | 9/10 | 3839 days | |
0.0 | 0% |
| Mille Winther | 10/10 | 3852 days | |
0.0 | 0% |
| Christine Van Den Berg Michele Imbach | 10/10 | 3864 days | |
0.0 | 0% |
| Eilahtan4 | 10/10 | 3902 days | 0.0 | 0% | |
| NZDiver | 10/10 | 3963 days | 0.0 | 0% | |
| Nikki Turner | 10/10 | 4006 days | |
0.0 | 0% |
| Christine Dadd | 8/10 | 4073 days | |
0.0 | 0% |
| KatieR | 10/10 | 4083 days | |
0.0 | 0% |
| Michael Maddams | 9/10 | 4083 days | |
0.0 | 0% |
| Russ C | 8/10 | 4085 days | 0.0 | 0% | |
| danam | 10/10 | 4086 days | |
0.0 | 0% |
| Katy1 | 9/10 | 4087 days | |
0.0 | 0% |
| StefanieGermany | 9/10 | 4102 days | |
0.0 | 0% |
| lannie | 9/10 | 4118 days | |
0.0 | 0% |
| AbigailB | 10/10 | 4130 days | |
0.0 | 0% |
| ReneeA | 10/10 | 4133 days | |
0.0 | 0% |
| Ute | 9/10 | 4137 days | |
0.0 | 0% |
| Annika | 10/10 | 4149 days | |
0.0 | 0% |
| Salick | 9/10 | 4149 days | |
0.0 | 0% |
| Thomas | 8/10 | 4156 days | |
0.0 | 0% |
| Prentner | 10/10 | 4165 days | |
0.0 | 0% |
| Evi | 9/10 | 4190 days | |
0.0 | 0% |
| Limor | 8/10 | 4191 days | |
0.0 | 0% |
| Christian | 10/10 | 4300 days | |
0.0 | 0% |
| Lee Chapman | 10/10 | 4401 days | 0.0 | 0% | |
| Jo and Tony | 10/10 | 4477 days | |
0.0 | 0% |
| Lara Gema Conde | 5/10 | 4577 days | |
0.0 | 0% |
| Trish | 10/10 | 4814 days | |
0.0 | 0% |
| Fran | 8/10 | 4815 days | |
0.0 | 0% |
| SueLinsk | 10/10 | 4815 days | |
0.0 | 0% |
| Rosemary | 9/10 | 4815 days | |
0.0 | 0% |
| Martin Christina | 9/10 | 4821 days | |
0.0 | 0% |
| Meike | 8/10 | 4848 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
-2.33% Adjustment
There may be an adjustment if this experience hasn't received any reviews within the last 111 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 | -2.29% |
| 198 | -2.30% |
| 199 | -2.32% |
| 200 | -2.33% |
| 201 | -2.34% |
| 202 | -2.35% |
| 203 | -2.36% |
| … | … |
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.