Hi, 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.
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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
91.32%
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 | Relative Weight |
|---|---|---|---|
| Barbara McNab | 10/10 | 2597 days | 100% |
| Cherie and Dan | 10/10 | 2937 days | 77% |
| Netta Tyler | 10/10 | 2989 days | 74% |
| Theerada Wongkaew | 10/10 | 3031 days | 71% |
| Gazmira Molina | 8/10 | 3074 days | 66% |
| Jessica Nasstrom | 8/10 | 3081 days | 66% |
| Adeline | 8/10 | 3086 days | 65% |
| Rebecca Pierce | 10/10 | 3112 days | 65% |
| Jane Simmons | 10/10 | 3234 days | 57% |
| Julia Clark | 9/10 | 3302 days | 52% |
| Kristina Breitwieser | 10/10 | 3307 days | 52% |
| Olivier Anciaux | 7/10 | 3320 days | 46% |
| Justine Hoffmann | 9/10 | 3352 days | 48% |
| Ruven Rintelmann | 9/10 | 3357 days | 48% |
| Niels Hoogendooen | 8/10 | 3370 days | 47% |
| Marie Brauherr | 10/10 | 3378 days | 47% |
| Luisa and Hannes | 8/10 | 3382 days | 46% |
| Christian Boudreau | 9/10 | 3400 days | 45% |
| Manuela Opprecht | 7/10 | 3732 days | 20% |
| Damaris Mayer | 3/10 | 3732 days | 4% |
| Sophie Huybrechts | 10/10 | 3774 days | 21% |
| Ally Cook | 9/10 | 3778 days | 20% |
| Jessie Sabine | 9/10 | 4077 days | 0% |
| Katrina Gamby | 10/10 | 4435 days | 14% |
| Sonia Sennane | 10/10 | 4789 days | 14% |
| Melanie Friessen | 9/10 | 4790 days | 14% |
| Barry Baily | 10/10 | 4801 days | 14% |
| Elisabeth | 9/10 | 4810 days | 14% |
| Lotte Foged | 8/10 | 4815 days | 14% |
| Anika | 8/10 | 4816 days | 14% |
| Paul | 8/10 | 4886 days | 14% |
| Elke & Charlotte | 9/10 | 4899 days | 14% |
| Kris Gijbels | 9/10 | 5132 days | 14% |
| Patrick Gloede | 10/10 | 5137 days | 14% |
| Norm and Sky | 9/10 | 5142 days | 14% |
| Roald and Ellen | 9/10 | 5143 days | 14% |
| B Kleven | 10/10 | 5148 days | 14% |
| Ann-Katrine & Sille | 10/10 | 5152 days | 14% |
| Erland Ostberg | 8/10 | 5156 days | 14% |
| Helene Descamps | 9/10 | 5170 days | 14% |
| Heather Deobald | 9/10 | 5172 days | 14% |
| Christina Fischer | 6/10 | 5177 days | 9% |
| Shoe | 10/10 | 5244 days | 14% |
| RobThexton | 10/10 | 5397 days | 14% |
| Martin | 9/10 | 5458 days | 14% |
| cpochin | 10/10 | 5488 days | 14% |
| John Casey | 10/10 | 5500 days | 14% |
| Peter Schmidt | 10/10 | 5519 days | 14% |
| Elisabeth Egerup | 10/10 | 5526 days | 14% |
| Vera Van Schie | 10/10 | 5527 days | 14% |
| Chris Glasg | 10/10 | 5527 days | 14% |
| Klass | 9/10 | 5533 days | 14% |
| Belinda Godhard | 9/10 | 5544 days | 14% |
| Theta | 9/10 | 5547 days | 14% |
| jamesg | 9/10 | 5607 days | 14% |
| Mille Winther | 10/10 | 5620 days | 14% |
| Christine Van Den Berg Michele Imbach | 10/10 | 5632 days | 14% |
| Eilahtan4 | 10/10 | 5670 days | 14% |
| NZDiver | 10/10 | 5731 days | 14% |
| Nikki Turner | 10/10 | 5774 days | 14% |
| Christine Dadd | 8/10 | 5841 days | 14% |
| KatieR | 10/10 | 5851 days | 14% |
| Michael Maddams | 9/10 | 5851 days | 14% |
| Russ C | 8/10 | 5853 days | 14% |
| danam | 10/10 | 5854 days | 14% |
| Katy1 | 9/10 | 5855 days | 14% |
| StefanieGermany | 9/10 | 5870 days | 14% |
| lannie | 9/10 | 5886 days | 14% |
| AbigailB | 10/10 | 5898 days | 14% |
| ReneeA | 10/10 | 5901 days | 14% |
| Ute | 9/10 | 5905 days | 14% |
| Annika | 10/10 | 5917 days | 14% |
| Salick | 9/10 | 5917 days | 14% |
| Thomas | 8/10 | 5924 days | 14% |
| Prentner | 10/10 | 5933 days | 14% |
| Evi | 9/10 | 5958 days | 14% |
| Limor | 8/10 | 5959 days | 14% |
| Christian | 10/10 | 6068 days | 14% |
| Lee Chapman | 10/10 | 6169 days | 14% |
| Jo and Tony | 10/10 | 6245 days | 14% |
| Lara Gema Conde | 5/10 | 6345 days | 6% |
| Trish | 10/10 | 6582 days | 14% |
| Fran | 8/10 | 6583 days | 14% |
| SueLinsk | 10/10 | 6583 days | 14% |
| Rosemary | 9/10 | 6583 days | 14% |
| Martin Christina | 9/10 | 6589 days | 14% |
| Meike | 8/10 | 6616 days | 14% |
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
-3.57% Adjustment
There may be an adjustment if this experience hasn't received any reviews within the last 63 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 | -3.51% |
| 198 | -3.53% |
| 199 | -3.55% |
| 200 | -3.57% |
| 201 | -3.58% |
| 202 | -3.60% |
| 203 | -3.62% |
| … | … |
Balancing Adjustment
1.33% Adjustment
Every experience's review score is adjusted to balance out the disproportional number of negative reviews that are contributed.
You won't be surprised to learn that disgruntled customers are more likely to leave a review than happy ones. They are motivated to share their experience and warn others. We consider this a good thing and it's why reading the reviews is important. However we've learned it can misrepresent the experience in a more overall sense.
We apply a balancing adjustment to counteract this effect and ensure the ranking score is a more fair representation of the experience. This adjustment is applied equally to all experiences.
Final Ranking Score
89%
The final ranking score once any adjustments, ratings, and rounding has been applied. This value is recalculated each day and a short rolling average is applied. Therefore it may not be precisely accurate based on the other values presented.