G'day, 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 Hells Gate and Wai Ora Spa.
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.
Hells Gate and Wai Ora Spa
Valid Reviews
139 Valid Reviews
The Hells Gate and Wai Ora Spa experience has a total of 145 reviews. There are 139 valid reviews that are included when calculating the ranking score and 6 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 139 valid reviews:
| Rating | Count | Percentage | |
|---|---|---|---|
| 10/10 | 14 |
|
10% |
| 9/10 | 15 |
|
11% |
| 8/10 | 32 |
|
23% |
| 7/10 | 30 |
|
22% |
| 6/10 | 13 |
|
9% |
| 5/10 | 15 |
|
11% |
| 4/10 | 4 |
|
3% |
| 3/10 | 10 |
|
7% |
| 2/10 | 5 |
|
4% |
| 1/10 | 1 |
|
1% |
68.42% Average
The raw data average (mean) for all the Hells Gate and Wai Ora Spa valid reviews is 68.42% and is based on 139 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
119 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 139 valid reviews, the experience has 119 face-to-face reviews collected during interviews by our team.
Below is the distribution of ratings for the 119 face-to-face reviews:
| Rating | Count | Percentage | |
|---|---|---|---|
| 10/10 | 10 |
|
8% |
| 9/10 | 13 |
|
11% |
| 8/10 | 30 |
|
25% |
| 7/10 | 28 |
|
24% |
| 6/10 | 11 |
|
9% |
| 5/10 | 12 |
|
10% |
| 4/10 | 3 |
|
3% |
| 3/10 | 7 |
|
6% |
| 2/10 | 4 |
|
3% |
| 1/10 | 1 |
|
1% |
68.99% Average
The raw data average (mean) for all the Hells Gate and Wai Ora Spa face-to-face reviews is 68.99% and is based on 119 face-to-face reviews. This value is not used to calculate the ranking score and it only provided here for comparison purposes.
Weighted Average
71.88%
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 |
|---|---|---|---|
| Melissa S | 2/10 | 2642 days | 54% |
| Inez Cavallaro | 6/10 | 2703 days | 100% |
| John Farley | 10/10 | 3304 days | 74% |
| Frank Fabian | 8/10 | 3355 days | 69% |
| Les Hendy | 8/10 | 3381 days | 67% |
| Lea Celerier | 8/10 | 3382 days | 67% |
| Jane Scott | 9/10 | 3432 days | 65% |
| Michelle Smit | 8/10 | 3494 days | 60% |
| Jan Berendsen | 5/10 | 3590 days | 41% |
| Chandra Macraigne | 6/10 | 3625 days | 44% |
| Nanna Torp | 3/10 | 3627 days | 28% |
| Karel | 7/10 | 4364 days | 0% |
| Dick Kooij | 7/10 | 4785 days | 32% |
| Huw Davies | 8/10 | 5053 days | 34% |
| Goran Backlund | 7/10 | 5063 days | 32% |
| Marc Schmiedily | 3/10 | 5064 days | 18% |
| Martin Beuker | 8/10 | 5084 days | 34% |
| Richard Harvey | 8/10 | 5087 days | 34% |
| Mark Bogton | 5/10 | 5087 days | 26% |
| Thomas | 5/10 | 5089 days | 26% |
| Kimberley Mills | 8/10 | 5094 days | 34% |
| Scott Simpson | 5/10 | 5095 days | 26% |
| Luis Valenzuela | 5/10 | 5100 days | 26% |
| Petra | 8/10 | 5102 days | 34% |
| David Blundell | 7/10 | 5102 days | 32% |
| Lucie Rutherfurd | 9/10 | 5105 days | 34% |
| Peter W. | 3/10 | 5169 days | 18% |
| Steve Neilson | 8/10 | 5176 days | 34% |
| Erik Folkersen | 4/10 | 5183 days | 22% |
| Mark de Boer | 8/10 | 5189 days | 34% |
| Tina | 9/10 | 5199 days | 34% |
| Jacquimd13 | 10/10 | 5322 days | 35% |
| Natascha Rachel | 7/10 | 5389 days | 32% |
| A Jones | 9/10 | 5416 days | 34% |
| Walker | 5/10 | 5416 days | 26% |
| Lindsey Clough | 2/10 | 5422 days | 15% |
| Natalie Maguire | 5/10 | 5427 days | 26% |
| Andreas Rath | 6/10 | 5429 days | 30% |
| Peter & Angela Brown | 10/10 | 5434 days | 35% |
| Chris Ashton | 7/10 | 5438 days | 32% |
| Kees Stigter | 7/10 | 5440 days | 32% |
| Diete Rokosch | 9/10 | 5445 days | 34% |
| Brian | 10/10 | 5447 days | 35% |
| Ronald Lippett | 8/10 | 5449 days | 34% |
| Ines | 8/10 | 5459 days | 34% |
| Julian Seizinger | 2/10 | 5459 days | 15% |
| Ann Thompson | 9/10 | 5460 days | 34% |
| Luise Jaeger | 10/10 | 5462 days | 35% |
| Eva Stauderova | 6/10 | 5463 days | 30% |
| Marianne Astorp | 8/10 | 5463 days | 34% |
| Henrik Petersen | 7/10 | 5465 days | 32% |
| Michael Eck | 8/10 | 5465 days | 34% |
| Lili | 8/10 | 5465 days | 34% |
| Florian | 7/10 | 5465 days | 32% |
| willsworthy | 5/10 | 5564 days | 26% |
| craigy | 5/10 | 5656 days | 26% |
| BigSis | 7/10 | 5656 days | 32% |
| Russ Turner | 2/10 | 5795 days | 15% |
| Andy | 6/10 | 5799 days | 30% |
| Michael Egli | 9/10 | 5800 days | 34% |
| Alan & Lorna | 3/10 | 5802 days | 18% |
| Venot | 7/10 | 5812 days | 32% |
| Roger Trusedale | 5/10 | 5819 days | 26% |
| David Rich | 6/10 | 5822 days | 30% |
| Mathias Skov | 4/10 | 5823 days | 22% |
| Nikki Wood | 6/10 | 5831 days | 30% |
| Mike Kirchner | 2/10 | 5833 days | 15% |
| Wolfgang G | 10/10 | 5843 days | 35% |
| Bo Moenstead | 8/10 | 5846 days | 34% |
| cees juffermans | 8/10 | 5850 days | 34% |
| Camenzind | 7/10 | 5857 days | 32% |
| Angela Stringer | 4/10 | 5868 days | 22% |
| blokzyl | 8/10 | 5888 days | 34% |
| aages | 9/10 | 5892 days | 34% |
| Emma Coltman | 5/10 | 5901 days | 26% |
| Helen Pet | 9/10 | 5907 days | 34% |
| nancyburns | 7/10 | 5929 days | 32% |
| Von | 5/10 | 5929 days | 26% |
| rita | 7/10 | 6008 days | 32% |
| Jess Thompson | 10/10 | 6021 days | 35% |
| Boxa Smith | 10/10 | 6021 days | 35% |
| LowerD | 9/10 | 6137 days | 34% |
| Sofie | 8/10 | 6143 days | 34% |
| Arjan Muis | 7/10 | 6145 days | 32% |
| Marion | 10/10 | 6147 days | 35% |
| Kim | 6/10 | 6147 days | 30% |
| MichaelS1 | 3/10 | 6159 days | 18% |
| ClodaghM | 8/10 | 6160 days | 34% |
| Andrew Wilson | 9/10 | 6160 days | 34% |
| FiensG | 8/10 | 6162 days | 34% |
| Joel | 7/10 | 6163 days | 32% |
| Robert | 4/10 | 6166 days | 22% |
| Chris | 8/10 | 6167 days | 34% |
| JuliaG1 | 7/10 | 6176 days | 32% |
| DavidMurray | 7/10 | 6177 days | 32% |
| AndrewF78 | 6/10 | 6179 days | 30% |
| Sarah | 8/10 | 6179 days | 34% |
| Carmel | 7/10 | 6183 days | 32% |
| marcusr | 7/10 | 6184 days | 32% |
| BethanD | 9/10 | 6190 days | 34% |
| ClaudiaK | 1/10 | 6192 days | 13% |
| Miguel | 3/10 | 6193 days | 18% |
| Ko | 8/10 | 6207 days | 34% |
| Nienhaus | 7/10 | 6210 days | 32% |
| Kern | 3/10 | 6227 days | 18% |
| Stephanie | 9/10 | 6243 days | 34% |
| Miha | 10/10 | 6248 days | 35% |
| Jacinta | 3/10 | 6273 days | 18% |
| Lara | 7/10 | 6320 days | 32% |
| Katie | 7/10 | 6338 days | 32% |
| Daniela Bell | 10/10 | 6349 days | 35% |
| Jenny | 7/10 | 6353 days | 32% |
| maria d | 10/10 | 6385 days | 35% |
| fgregory | 3/10 | 6405 days | 18% |
| woodolly | 3/10 | 6486 days | 18% |
| Christian | 6/10 | 6530 days | 30% |
| Alexandra Vogeli | 8/10 | 6530 days | 34% |
| Richard Steward | 9/10 | 6540 days | 34% |
| boukje | 8/10 | 6543 days | 34% |
| Stephanie | 10/10 | 6555 days | 35% |
| Carla | 8/10 | 6555 days | 34% |
| Melissa Steedman | 7/10 | 6582 days | 32% |
| Vanessa Brennan | 5/10 | 6582 days | 26% |
| Maria | 8/10 | 6586 days | 34% |
| Gerber Liselotte | 7/10 | 6617 days | 32% |
| Manuel | 5/10 | 6632 days | 26% |
| Tom Clements | 6/10 | 6633 days | 30% |
| Sally Walker | 9/10 | 6660 days | 34% |
| Bridgy | 10/10 | 6833 days | 35% |
| andrew julie | 8/10 | 6867 days | 34% |
| Bas Marieke | 8/10 | 6884 days | 34% |
| Richhouse | 8/10 | 6889 days | 34% |
| Dennis | 7/10 | 6890 days | 32% |
| Rietveld | 6/10 | 6901 days | 30% |
| Susanne | 5/10 | 6906 days | 26% |
| Lucy | 7/10 | 6906 days | 32% |
| Ralph | 7/10 | 6908 days | 32% |
| Nissa | 7/10 | 6908 days | 32% |
| Ash Sturm | 6/10 | 7025 days | 30% |
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 Hells Gate and Wai Ora Spa experience has plenty of reviews and does not meet the criteria for any adjustment.
Recent Reviews Adjustment
-4.12% Adjustment
There may be an adjustment if this experience hasn't received any reviews within the last 48 days. However the Hells Gate and Wai Ora Spa 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 Hells Gate and Wai Ora Spa experience has been adjusted for 200 days. Adjustments are according to the following table.
| Days | Adjustment |
|---|---|
| … | … |
| 197 | -4.06% |
| 198 | -4.08% |
| 199 | -4.10% |
| 200 | -4.12% |
| 201 | -4.14% |
| 202 | -4.16% |
| 203 | -4.18% |
| … | … |
Balancing Adjustment
8.35% 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
76%
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.