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
71.87%
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 | 2591 days | 53% |
| Inez Cavallaro | 6/10 | 2652 days | 100% |
| John Farley | 10/10 | 3253 days | 75% |
| Frank Fabian | 8/10 | 3304 days | 70% |
| Les Hendy | 8/10 | 3330 days | 68% |
| Lea Celerier | 8/10 | 3331 days | 68% |
| Jane Scott | 9/10 | 3382 days | 65% |
| Michelle Smit | 8/10 | 3444 days | 60% |
| Jan Berendsen | 5/10 | 3539 days | 41% |
| Chandra Macraigne | 6/10 | 3574 days | 44% |
| Nanna Torp | 3/10 | 3576 days | 26% |
| Karel | 7/10 | 4313 days | 0% |
| Dick Kooij | 7/10 | 4734 days | 29% |
| Huw Davies | 8/10 | 5002 days | 31% |
| Goran Backlund | 7/10 | 5012 days | 29% |
| Marc Schmiedily | 3/10 | 5013 days | 15% |
| Martin Beuker | 8/10 | 5033 days | 31% |
| Richard Harvey | 8/10 | 5036 days | 31% |
| Mark Bogton | 5/10 | 5036 days | 23% |
| Thomas | 5/10 | 5038 days | 23% |
| Kimberley Mills | 8/10 | 5043 days | 31% |
| Scott Simpson | 5/10 | 5044 days | 23% |
| Luis Valenzuela | 5/10 | 5049 days | 23% |
| Petra | 8/10 | 5051 days | 31% |
| David Blundell | 7/10 | 5051 days | 29% |
| Lucie Rutherfurd | 9/10 | 5054 days | 31% |
| Peter W. | 3/10 | 5118 days | 15% |
| Steve Neilson | 8/10 | 5125 days | 31% |
| Erik Folkersen | 4/10 | 5132 days | 19% |
| Mark de Boer | 8/10 | 5138 days | 31% |
| Tina | 9/10 | 5148 days | 31% |
| Jacquimd13 | 10/10 | 5271 days | 31% |
| Natascha Rachel | 7/10 | 5338 days | 29% |
| A Jones | 9/10 | 5365 days | 31% |
| Walker | 5/10 | 5365 days | 23% |
| Lindsey Clough | 2/10 | 5371 days | 12% |
| Natalie Maguire | 5/10 | 5376 days | 23% |
| Andreas Rath | 6/10 | 5378 days | 26% |
| Peter & Angela Brown | 10/10 | 5383 days | 31% |
| Chris Ashton | 7/10 | 5387 days | 29% |
| Kees Stigter | 7/10 | 5389 days | 29% |
| Diete Rokosch | 9/10 | 5394 days | 31% |
| Brian | 10/10 | 5396 days | 31% |
| Ronald Lippett | 8/10 | 5398 days | 31% |
| Ines | 8/10 | 5408 days | 31% |
| Julian Seizinger | 2/10 | 5408 days | 12% |
| Ann Thompson | 9/10 | 5409 days | 31% |
| Luise Jaeger | 10/10 | 5411 days | 31% |
| Eva Stauderova | 6/10 | 5412 days | 26% |
| Marianne Astorp | 8/10 | 5412 days | 31% |
| Henrik Petersen | 7/10 | 5414 days | 29% |
| Michael Eck | 8/10 | 5414 days | 31% |
| Lili | 8/10 | 5414 days | 31% |
| Florian | 7/10 | 5414 days | 29% |
| willsworthy | 5/10 | 5513 days | 23% |
| craigy | 5/10 | 5605 days | 23% |
| BigSis | 7/10 | 5605 days | 29% |
| Russ Turner | 2/10 | 5744 days | 12% |
| Andy | 6/10 | 5748 days | 26% |
| Michael Egli | 9/10 | 5749 days | 31% |
| Alan & Lorna | 3/10 | 5751 days | 15% |
| Venot | 7/10 | 5761 days | 29% |
| Roger Trusedale | 5/10 | 5768 days | 23% |
| David Rich | 6/10 | 5771 days | 26% |
| Mathias Skov | 4/10 | 5772 days | 19% |
| Nikki Wood | 6/10 | 5780 days | 26% |
| Mike Kirchner | 2/10 | 5782 days | 12% |
| Wolfgang G | 10/10 | 5792 days | 31% |
| Bo Moenstead | 8/10 | 5795 days | 31% |
| cees juffermans | 8/10 | 5799 days | 31% |
| Camenzind | 7/10 | 5806 days | 29% |
| Angela Stringer | 4/10 | 5817 days | 19% |
| blokzyl | 8/10 | 5837 days | 31% |
| aages | 9/10 | 5841 days | 31% |
| Emma Coltman | 5/10 | 5850 days | 23% |
| Helen Pet | 9/10 | 5856 days | 31% |
| nancyburns | 7/10 | 5878 days | 29% |
| Von | 5/10 | 5878 days | 23% |
| rita | 7/10 | 5957 days | 29% |
| Jess Thompson | 10/10 | 5970 days | 31% |
| Boxa Smith | 10/10 | 5970 days | 31% |
| LowerD | 9/10 | 6086 days | 31% |
| Sofie | 8/10 | 6092 days | 31% |
| Arjan Muis | 7/10 | 6094 days | 29% |
| Marion | 10/10 | 6097 days | 31% |
| Kim | 6/10 | 6097 days | 26% |
| MichaelS1 | 3/10 | 6108 days | 15% |
| ClodaghM | 8/10 | 6109 days | 31% |
| Andrew Wilson | 9/10 | 6109 days | 31% |
| FiensG | 8/10 | 6111 days | 31% |
| Joel | 7/10 | 6112 days | 29% |
| Robert | 4/10 | 6116 days | 19% |
| Chris | 8/10 | 6117 days | 31% |
| JuliaG1 | 7/10 | 6125 days | 29% |
| DavidMurray | 7/10 | 6126 days | 29% |
| AndrewF78 | 6/10 | 6128 days | 26% |
| Sarah | 8/10 | 6129 days | 31% |
| Carmel | 7/10 | 6133 days | 29% |
| marcusr | 7/10 | 6134 days | 29% |
| BethanD | 9/10 | 6139 days | 31% |
| ClaudiaK | 1/10 | 6141 days | 10% |
| Miguel | 3/10 | 6143 days | 15% |
| Ko | 8/10 | 6157 days | 31% |
| Nienhaus | 7/10 | 6160 days | 29% |
| Kern | 3/10 | 6177 days | 15% |
| Stephanie | 9/10 | 6192 days | 31% |
| Miha | 10/10 | 6197 days | 31% |
| Jacinta | 3/10 | 6223 days | 15% |
| Lara | 7/10 | 6270 days | 29% |
| Katie | 7/10 | 6288 days | 29% |
| Daniela Bell | 10/10 | 6299 days | 31% |
| Jenny | 7/10 | 6303 days | 29% |
| maria d | 10/10 | 6335 days | 31% |
| fgregory | 3/10 | 6355 days | 15% |
| woodolly | 3/10 | 6436 days | 15% |
| Christian | 6/10 | 6479 days | 26% |
| Alexandra Vogeli | 8/10 | 6479 days | 31% |
| Richard Steward | 9/10 | 6489 days | 31% |
| boukje | 8/10 | 6493 days | 31% |
| Stephanie | 10/10 | 6504 days | 31% |
| Carla | 8/10 | 6504 days | 31% |
| Melissa Steedman | 7/10 | 6531 days | 29% |
| Vanessa Brennan | 5/10 | 6531 days | 23% |
| Maria | 8/10 | 6535 days | 31% |
| Gerber Liselotte | 7/10 | 6566 days | 29% |
| Manuel | 5/10 | 6581 days | 23% |
| Tom Clements | 6/10 | 6582 days | 26% |
| Sally Walker | 9/10 | 6609 days | 31% |
| Bridgy | 10/10 | 6782 days | 31% |
| andrew julie | 8/10 | 6816 days | 31% |
| Bas Marieke | 8/10 | 6833 days | 31% |
| Richhouse | 8/10 | 6838 days | 31% |
| Dennis | 7/10 | 6839 days | 29% |
| Rietveld | 6/10 | 6850 days | 26% |
| Susanne | 5/10 | 6855 days | 23% |
| Lucy | 7/10 | 6855 days | 29% |
| Ralph | 7/10 | 6857 days | 29% |
| Nissa | 7/10 | 6857 days | 29% |
| Ash Sturm | 6/10 | 6974 days | 26% |
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
-4.07% Adjustment
There may be an adjustment if this experience hasn't received any reviews within the last 42 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 | -4.01% |
| 198 | -4.03% |
| 199 | -4.05% |
| 200 | -4.07% |
| 201 | -4.09% |
| 202 | -4.11% |
| 203 | -4.13% |
| … | … |
Balancing Adjustment
8.32% 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.