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 | 2601 days | 53% |
| Inez Cavallaro | 6/10 | 2661 days | 100% |
| John Farley | 10/10 | 3263 days | 75% |
| Frank Fabian | 8/10 | 3314 days | 69% |
| Les Hendy | 8/10 | 3340 days | 68% |
| Lea Celerier | 8/10 | 3341 days | 68% |
| Jane Scott | 9/10 | 3391 days | 65% |
| Michelle Smit | 8/10 | 3453 days | 60% |
| Jan Berendsen | 5/10 | 3549 days | 41% |
| Chandra Macraigne | 6/10 | 3584 days | 44% |
| Nanna Torp | 3/10 | 3586 days | 27% |
| Karel | 7/10 | 4323 days | 0% |
| Dick Kooij | 7/10 | 4744 days | 30% |
| Huw Davies | 8/10 | 5012 days | 31% |
| Goran Backlund | 7/10 | 5022 days | 30% |
| Marc Schmiedily | 3/10 | 5023 days | 16% |
| Martin Beuker | 8/10 | 5043 days | 31% |
| Richard Harvey | 8/10 | 5046 days | 31% |
| Mark Bogton | 5/10 | 5046 days | 24% |
| Thomas | 5/10 | 5048 days | 24% |
| Kimberley Mills | 8/10 | 5053 days | 31% |
| Scott Simpson | 5/10 | 5054 days | 24% |
| Luis Valenzuela | 5/10 | 5059 days | 24% |
| Petra | 8/10 | 5061 days | 31% |
| David Blundell | 7/10 | 5061 days | 30% |
| Lucie Rutherfurd | 9/10 | 5064 days | 32% |
| Peter W. | 3/10 | 5128 days | 16% |
| Steve Neilson | 8/10 | 5135 days | 31% |
| Erik Folkersen | 4/10 | 5142 days | 20% |
| Mark de Boer | 8/10 | 5148 days | 31% |
| Tina | 9/10 | 5158 days | 32% |
| Jacquimd13 | 10/10 | 5280 days | 32% |
| Natascha Rachel | 7/10 | 5347 days | 30% |
| A Jones | 9/10 | 5375 days | 32% |
| Walker | 5/10 | 5375 days | 24% |
| Lindsey Clough | 2/10 | 5381 days | 13% |
| Natalie Maguire | 5/10 | 5386 days | 24% |
| Andreas Rath | 6/10 | 5388 days | 27% |
| Peter & Angela Brown | 10/10 | 5393 days | 32% |
| Chris Ashton | 7/10 | 5397 days | 30% |
| Kees Stigter | 7/10 | 5399 days | 30% |
| Diete Rokosch | 9/10 | 5404 days | 32% |
| Brian | 10/10 | 5406 days | 32% |
| Ronald Lippett | 8/10 | 5408 days | 31% |
| Ines | 8/10 | 5418 days | 31% |
| Julian Seizinger | 2/10 | 5418 days | 13% |
| Ann Thompson | 9/10 | 5419 days | 32% |
| Luise Jaeger | 10/10 | 5421 days | 32% |
| Eva Stauderova | 6/10 | 5422 days | 27% |
| Marianne Astorp | 8/10 | 5422 days | 31% |
| Henrik Petersen | 7/10 | 5424 days | 30% |
| Michael Eck | 8/10 | 5424 days | 31% |
| Lili | 8/10 | 5424 days | 31% |
| Florian | 7/10 | 5424 days | 30% |
| willsworthy | 5/10 | 5523 days | 24% |
| craigy | 5/10 | 5614 days | 24% |
| BigSis | 7/10 | 5614 days | 30% |
| Russ Turner | 2/10 | 5754 days | 13% |
| Andy | 6/10 | 5758 days | 27% |
| Michael Egli | 9/10 | 5759 days | 32% |
| Alan & Lorna | 3/10 | 5761 days | 16% |
| Venot | 7/10 | 5771 days | 30% |
| Roger Trusedale | 5/10 | 5778 days | 24% |
| David Rich | 6/10 | 5781 days | 27% |
| Mathias Skov | 4/10 | 5782 days | 20% |
| Nikki Wood | 6/10 | 5790 days | 27% |
| Mike Kirchner | 2/10 | 5792 days | 13% |
| Wolfgang G | 10/10 | 5802 days | 32% |
| Bo Moenstead | 8/10 | 5805 days | 31% |
| cees juffermans | 8/10 | 5809 days | 31% |
| Camenzind | 7/10 | 5816 days | 30% |
| Angela Stringer | 4/10 | 5827 days | 20% |
| blokzyl | 8/10 | 5847 days | 31% |
| aages | 9/10 | 5851 days | 32% |
| Emma Coltman | 5/10 | 5860 days | 24% |
| Helen Pet | 9/10 | 5866 days | 32% |
| nancyburns | 7/10 | 5888 days | 30% |
| Von | 5/10 | 5888 days | 24% |
| rita | 7/10 | 5966 days | 30% |
| Jess Thompson | 10/10 | 5979 days | 32% |
| Boxa Smith | 10/10 | 5979 days | 32% |
| LowerD | 9/10 | 6095 days | 32% |
| Sofie | 8/10 | 6102 days | 31% |
| Arjan Muis | 7/10 | 6104 days | 30% |
| Marion | 10/10 | 6106 days | 32% |
| Kim | 6/10 | 6106 days | 27% |
| MichaelS1 | 3/10 | 6118 days | 16% |
| ClodaghM | 8/10 | 6119 days | 31% |
| Andrew Wilson | 9/10 | 6119 days | 32% |
| FiensG | 8/10 | 6121 days | 31% |
| Joel | 7/10 | 6122 days | 30% |
| Robert | 4/10 | 6125 days | 20% |
| Chris | 8/10 | 6126 days | 31% |
| JuliaG1 | 7/10 | 6135 days | 30% |
| DavidMurray | 7/10 | 6136 days | 30% |
| AndrewF78 | 6/10 | 6138 days | 27% |
| Sarah | 8/10 | 6138 days | 31% |
| Carmel | 7/10 | 6142 days | 30% |
| marcusr | 7/10 | 6143 days | 30% |
| BethanD | 9/10 | 6149 days | 32% |
| ClaudiaK | 1/10 | 6151 days | 11% |
| Miguel | 3/10 | 6152 days | 16% |
| Ko | 8/10 | 6166 days | 31% |
| Nienhaus | 7/10 | 6169 days | 30% |
| Kern | 3/10 | 6186 days | 16% |
| Stephanie | 9/10 | 6202 days | 32% |
| Miha | 10/10 | 6206 days | 32% |
| Jacinta | 3/10 | 6232 days | 16% |
| Lara | 7/10 | 6279 days | 30% |
| Katie | 7/10 | 6297 days | 30% |
| Daniela Bell | 10/10 | 6308 days | 32% |
| Jenny | 7/10 | 6312 days | 30% |
| maria d | 10/10 | 6344 days | 32% |
| fgregory | 3/10 | 6364 days | 16% |
| woodolly | 3/10 | 6445 days | 16% |
| Christian | 6/10 | 6489 days | 27% |
| Alexandra Vogeli | 8/10 | 6489 days | 31% |
| Richard Steward | 9/10 | 6499 days | 32% |
| boukje | 8/10 | 6502 days | 31% |
| Stephanie | 10/10 | 6514 days | 32% |
| Carla | 8/10 | 6514 days | 31% |
| Melissa Steedman | 7/10 | 6541 days | 30% |
| Vanessa Brennan | 5/10 | 6541 days | 24% |
| Maria | 8/10 | 6545 days | 31% |
| Gerber Liselotte | 7/10 | 6576 days | 30% |
| Manuel | 5/10 | 6591 days | 24% |
| Tom Clements | 6/10 | 6592 days | 27% |
| Sally Walker | 9/10 | 6619 days | 32% |
| Bridgy | 10/10 | 6791 days | 32% |
| andrew julie | 8/10 | 6825 days | 31% |
| Bas Marieke | 8/10 | 6842 days | 31% |
| Richhouse | 8/10 | 6848 days | 31% |
| Dennis | 7/10 | 6849 days | 30% |
| Rietveld | 6/10 | 6860 days | 27% |
| Susanne | 5/10 | 6865 days | 24% |
| Lucy | 7/10 | 6865 days | 30% |
| Ralph | 7/10 | 6867 days | 30% |
| Nissa | 7/10 | 6867 days | 30% |
| Ash Sturm | 6/10 | 6984 days | 27% |
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
-4.06% 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 | -4.00% |
| 198 | -4.02% |
| 199 | -4.04% |
| 200 | -4.06% |
| 201 | -4.08% |
| 202 | -4.10% |
| 203 | -4.12% |
| … | … |
Balancing Adjustment
8.31% 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.