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
71.85%
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 | 2371 days | 48% |
| Inez Cavallaro | 6/10 | 2432 days | 100% |
| John Farley | 10/10 | 3033 days | 77% |
| Frank Fabian | 8/10 | 3084 days | 72% |
| Les Hendy | 8/10 | 3110 days | 71% |
| Lea Celerier | 8/10 | 3111 days | 70% |
| Jane Scott | 9/10 | 3161 days | 68% |
| Michelle Smit | 8/10 | 3223 days | 63% |
| Jan Berendsen | 5/10 | 3319 days | 41% |
| Chandra Macraigne | 6/10 | 3354 days | 46% |
| Nanna Torp | 3/10 | 3356 days | 24% |
| Karel | 7/10 | 4093 days | 4% |
| Dick Kooij | 7/10 | 4514 days | 18% |
| Huw Davies | 8/10 | 4782 days | 20% |
| Goran Backlund | 7/10 | 4792 days | 18% |
| Marc Schmiedily | 3/10 | 4793 days | 5% |
| Martin Beuker | 8/10 | 4813 days | 20% |
| Richard Harvey | 8/10 | 4816 days | 20% |
| Mark Bogton | 5/10 | 4816 days | 12% |
| Thomas | 5/10 | 4818 days | 12% |
| Kimberley Mills | 8/10 | 4823 days | 20% |
| Scott Simpson | 5/10 | 4824 days | 12% |
| Luis Valenzuela | 5/10 | 4829 days | 12% |
| Petra | 8/10 | 4831 days | 20% |
| David Blundell | 7/10 | 4831 days | 18% |
| Lucie Rutherfurd | 9/10 | 4834 days | 20% |
| Peter W. | 3/10 | 4898 days | 5% |
| Steve Neilson | 8/10 | 4905 days | 20% |
| Erik Folkersen | 4/10 | 4912 days | 9% |
| Mark de Boer | 8/10 | 4918 days | 20% |
| Tina | 9/10 | 4928 days | 20% |
| Jacquimd13 | 10/10 | 5051 days | 21% |
| Natascha Rachel | 7/10 | 5118 days | 18% |
| A Jones | 9/10 | 5145 days | 20% |
| Walker | 5/10 | 5145 days | 12% |
| Lindsey Clough | 2/10 | 5151 days | 2% |
| Natalie Maguire | 5/10 | 5156 days | 12% |
| Andreas Rath | 6/10 | 5158 days | 16% |
| Peter & Angela Brown | 10/10 | 5163 days | 21% |
| Chris Ashton | 7/10 | 5167 days | 18% |
| Kees Stigter | 7/10 | 5169 days | 18% |
| Diete Rokosch | 9/10 | 5174 days | 20% |
| Brian | 10/10 | 5176 days | 21% |
| Ronald Lippett | 8/10 | 5178 days | 20% |
| Ines | 8/10 | 5188 days | 20% |
| Julian Seizinger | 2/10 | 5188 days | 2% |
| Ann Thompson | 9/10 | 5189 days | 20% |
| Luise Jaeger | 10/10 | 5191 days | 21% |
| Eva Stauderova | 6/10 | 5192 days | 16% |
| Marianne Astorp | 8/10 | 5192 days | 20% |
| Henrik Petersen | 7/10 | 5194 days | 18% |
| Michael Eck | 8/10 | 5194 days | 20% |
| Lili | 8/10 | 5194 days | 20% |
| Florian | 7/10 | 5194 days | 18% |
| willsworthy | 5/10 | 5293 days | 12% |
| craigy | 5/10 | 5385 days | 12% |
| BigSis | 7/10 | 5385 days | 18% |
| Russ Turner | 2/10 | 5524 days | 2% |
| Andy | 6/10 | 5528 days | 16% |
| Michael Egli | 9/10 | 5529 days | 20% |
| Alan & Lorna | 3/10 | 5531 days | 5% |
| Venot | 7/10 | 5541 days | 18% |
| Roger Trusedale | 5/10 | 5548 days | 12% |
| David Rich | 6/10 | 5551 days | 16% |
| Mathias Skov | 4/10 | 5552 days | 9% |
| Nikki Wood | 6/10 | 5560 days | 16% |
| Mike Kirchner | 2/10 | 5562 days | 2% |
| Wolfgang G | 10/10 | 5572 days | 21% |
| Bo Moenstead | 8/10 | 5575 days | 20% |
| cees juffermans | 8/10 | 5579 days | 20% |
| Camenzind | 7/10 | 5586 days | 18% |
| Angela Stringer | 4/10 | 5597 days | 9% |
| blokzyl | 8/10 | 5617 days | 20% |
| aages | 9/10 | 5621 days | 20% |
| Emma Coltman | 5/10 | 5630 days | 12% |
| Helen Pet | 9/10 | 5636 days | 20% |
| nancyburns | 7/10 | 5658 days | 18% |
| Von | 5/10 | 5658 days | 12% |
| rita | 7/10 | 5737 days | 18% |
| Jess Thompson | 10/10 | 5750 days | 21% |
| Boxa Smith | 10/10 | 5750 days | 21% |
| LowerD | 9/10 | 5866 days | 20% |
| Sofie | 8/10 | 5872 days | 20% |
| Arjan Muis | 7/10 | 5874 days | 18% |
| Marion | 10/10 | 5876 days | 21% |
| Kim | 6/10 | 5876 days | 16% |
| MichaelS1 | 3/10 | 5888 days | 5% |
| ClodaghM | 8/10 | 5889 days | 20% |
| Andrew Wilson | 9/10 | 5889 days | 20% |
| FiensG | 8/10 | 5891 days | 20% |
| Joel | 7/10 | 5892 days | 18% |
| Robert | 4/10 | 5895 days | 9% |
| Chris | 8/10 | 5896 days | 20% |
| JuliaG1 | 7/10 | 5905 days | 18% |
| DavidMurray | 7/10 | 5906 days | 18% |
| AndrewF78 | 6/10 | 5908 days | 16% |
| Sarah | 8/10 | 5908 days | 20% |
| Carmel | 7/10 | 5912 days | 18% |
| marcusr | 7/10 | 5913 days | 18% |
| BethanD | 9/10 | 5919 days | 20% |
| ClaudiaK | 1/10 | 5921 days | 0% |
| Miguel | 3/10 | 5922 days | 5% |
| Ko | 8/10 | 5936 days | 20% |
| Nienhaus | 7/10 | 5939 days | 18% |
| Kern | 3/10 | 5956 days | 5% |
| Stephanie | 9/10 | 5972 days | 20% |
| Miha | 10/10 | 5976 days | 21% |
| Jacinta | 3/10 | 6002 days | 5% |
| Lara | 7/10 | 6049 days | 18% |
| Katie | 7/10 | 6067 days | 18% |
| Daniela Bell | 10/10 | 6078 days | 21% |
| Jenny | 7/10 | 6082 days | 18% |
| maria d | 10/10 | 6114 days | 21% |
| fgregory | 3/10 | 6134 days | 5% |
| woodolly | 3/10 | 6215 days | 5% |
| Christian | 6/10 | 6259 days | 16% |
| Alexandra Vogeli | 8/10 | 6259 days | 20% |
| Richard Steward | 9/10 | 6269 days | 20% |
| boukje | 8/10 | 6272 days | 20% |
| Stephanie | 10/10 | 6284 days | 21% |
| Carla | 8/10 | 6284 days | 20% |
| Melissa Steedman | 7/10 | 6311 days | 18% |
| Vanessa Brennan | 5/10 | 6311 days | 12% |
| Maria | 8/10 | 6315 days | 20% |
| Gerber Liselotte | 7/10 | 6346 days | 18% |
| Manuel | 5/10 | 6361 days | 12% |
| Tom Clements | 6/10 | 6362 days | 16% |
| Sally Walker | 9/10 | 6389 days | 20% |
| Bridgy | 10/10 | 6562 days | 21% |
| andrew julie | 8/10 | 6596 days | 20% |
| Bas Marieke | 8/10 | 6613 days | 20% |
| Richhouse | 8/10 | 6618 days | 20% |
| Dennis | 7/10 | 6619 days | 18% |
| Rietveld | 6/10 | 6630 days | 16% |
| Susanne | 5/10 | 6635 days | 12% |
| Lucy | 7/10 | 6635 days | 18% |
| Ralph | 7/10 | 6637 days | 18% |
| Nissa | 7/10 | 6637 days | 18% |
| Ash Sturm | 6/10 | 6754 days | 16% |
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
-3.16% Adjustment
There may be an adjustment if this experience hasn't received any reviews within the last 76 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 | -3.11% |
| 198 | -3.13% |
| 199 | -3.14% |
| 200 | -3.16% |
| 201 | -3.17% |
| 202 | -3.19% |
| 203 | -3.21% |
| … | … |
Balancing Adjustment
7.78% 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.