Ranking Score Explained
Hi there, 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
69.81%
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 | 1295 days | 92% |
| Inez Cavallaro | 6/10 | 1356 days | 100% |
| John Farley | 10/10 | 1957 days | 88% |
| Frank Fabian | 8/10 | 2008 days | 80% |
| Les Hendy | 8/10 | 2034 days | 78% |
| Lea Celerier | 8/10 | 2035 days | 78% |
| Jane Scott | 9/10 | 2085 days | 80% |
| Michelle Smit | 8/10 | 2147 days | 72% |
| Jan Berendsen | 5/10 | 2243 days | 55% |
| Chandra Macraigne | 6/10 | 2278 days | 55% |
| Nanna Torp | 3/10 | 2280 days | 50% |
| Karel | 7/10 | 3017 days | 22% |
| Dick Kooij | 7/10 | 3438 days | 0% |
| Huw Davies | 8/10 | 3706 days | 17% |
| Goran Backlund | 7/10 | 3716 days | 16% |
| Marc Schmiedily | 3/10 | 3717 days | 12% |
| Martin Beuker | 8/10 | 3737 days | 17% |
| Richard Harvey | 8/10 | 3740 days | 17% |
| Mark Bogton | 5/10 | 3740 days | 13% |
| Thomas | 5/10 | 3742 days | 13% |
| Kimberley Mills | 8/10 | 3747 days | 17% |
| Scott Simpson | 5/10 | 3748 days | 13% |
| Luis Valenzuela | 5/10 | 3753 days | 13% |
| Petra | 8/10 | 3755 days | 17% |
| David Blundell | 7/10 | 3755 days | 16% |
| Lucie Rutherfurd | 9/10 | 3758 days | 19% |
| Peter W. | 3/10 | 3822 days | 12% |
| Steve Neilson | 8/10 | 3829 days | 17% |
| Erik Folkersen | 4/10 | 3836 days | 12% |
| Mark de Boer | 8/10 | 3842 days | 17% |
| Tina | 9/10 | 3852 days | 19% |
| Jacquimd13 | 10/10 | 3975 days | 19% |
| Natascha Rachel | 7/10 | 4042 days | 16% |
| A Jones | 9/10 | 4069 days | 19% |
| Walker | 5/10 | 4069 days | 13% |
| Lindsey Clough | 2/10 | 4075 days | 11% |
| Natalie Maguire | 5/10 | 4080 days | 13% |
| Andreas Rath | 6/10 | 4082 days | 14% |
| Peter & Angela Brown | 10/10 | 4087 days | 19% |
| Chris Ashton | 7/10 | 4091 days | 16% |
| Kees Stigter | 7/10 | 4093 days | 16% |
| Diete Rokosch | 9/10 | 4098 days | 19% |
| Brian | 10/10 | 4100 days | 19% |
| Ronald Lippett | 8/10 | 4102 days | 17% |
| Ines | 8/10 | 4112 days | 17% |
| Julian Seizinger | 2/10 | 4112 days | 11% |
| Ann Thompson | 9/10 | 4113 days | 19% |
| Luise Jaeger | 10/10 | 4115 days | 19% |
| Eva Stauderova | 6/10 | 4116 days | 14% |
| Marianne Astorp | 8/10 | 4116 days | 17% |
| Henrik Petersen | 7/10 | 4118 days | 16% |
| Michael Eck | 8/10 | 4118 days | 17% |
| Lili | 8/10 | 4118 days | 17% |
| Florian | 7/10 | 4118 days | 16% |
| willsworthy | 5/10 | 4217 days | 13% |
| craigy | 5/10 | 4309 days | 13% |
| BigSis | 7/10 | 4309 days | 16% |
| Russ Turner | 2/10 | 4448 days | 11% |
| Andy | 6/10 | 4452 days | 14% |
| Michael Egli | 9/10 | 4453 days | 19% |
| Alan & Lorna | 3/10 | 4455 days | 12% |
| Venot | 7/10 | 4465 days | 16% |
| Roger Trusedale | 5/10 | 4472 days | 13% |
| David Rich | 6/10 | 4475 days | 14% |
| Mathias Skov | 4/10 | 4476 days | 12% |
| Nikki Wood | 6/10 | 4484 days | 14% |
| Mike Kirchner | 2/10 | 4486 days | 11% |
| Wolfgang G | 10/10 | 4496 days | 19% |
| Bo Moenstead | 8/10 | 4499 days | 17% |
| cees juffermans | 8/10 | 4503 days | 17% |
| Camenzind | 7/10 | 4510 days | 16% |
| Angela Stringer | 4/10 | 4521 days | 12% |
| blokzyl | 8/10 | 4541 days | 17% |
| aages | 9/10 | 4545 days | 19% |
| Emma Coltman | 5/10 | 4554 days | 13% |
| Helen Pet | 9/10 | 4560 days | 19% |
| nancyburns | 7/10 | 4582 days | 16% |
| Von | 5/10 | 4582 days | 13% |
| rita | 7/10 | 4661 days | 16% |
| Jess Thompson | 10/10 | 4674 days | 19% |
| Boxa Smith | 10/10 | 4674 days | 19% |
| LowerD | 9/10 | 4790 days | 19% |
| Sofie | 8/10 | 4796 days | 17% |
| Arjan Muis | 7/10 | 4798 days | 16% |
| Marion | 10/10 | 4800 days | 19% |
| Kim | 6/10 | 4800 days | 14% |
| MichaelS1 | 3/10 | 4812 days | 12% |
| ClodaghM | 8/10 | 4813 days | 17% |
| Andrew Wilson | 9/10 | 4813 days | 19% |
| FiensG | 8/10 | 4815 days | 17% |
| Joel | 7/10 | 4816 days | 16% |
| Robert | 4/10 | 4819 days | 12% |
| Chris | 8/10 | 4820 days | 17% |
| JuliaG1 | 7/10 | 4829 days | 16% |
| DavidMurray | 7/10 | 4830 days | 16% |
| AndrewF78 | 6/10 | 4832 days | 14% |
| Sarah | 8/10 | 4832 days | 17% |
| Carmel | 7/10 | 4836 days | 16% |
| marcusr | 7/10 | 4837 days | 16% |
| BethanD | 9/10 | 4843 days | 19% |
| ClaudiaK | 1/10 | 4845 days | 11% |
| Miguel | 3/10 | 4846 days | 12% |
| Ko | 8/10 | 4860 days | 17% |
| Nienhaus | 7/10 | 4863 days | 16% |
| Kern | 3/10 | 4880 days | 12% |
| Stephanie | 9/10 | 4896 days | 19% |
| Miha | 10/10 | 4901 days | 19% |
| Jacinta | 3/10 | 4926 days | 12% |
| Lara | 7/10 | 4973 days | 16% |
| Katie | 7/10 | 4991 days | 16% |
| Daniela Bell | 10/10 | 5002 days | 19% |
| Jenny | 7/10 | 5006 days | 16% |
| maria d | 10/10 | 5038 days | 19% |
| fgregory | 3/10 | 5058 days | 12% |
| woodolly | 3/10 | 5139 days | 12% |
| Christian | 6/10 | 5183 days | 14% |
| Alexandra Vogeli | 8/10 | 5183 days | 17% |
| Richard Steward | 9/10 | 5193 days | 19% |
| boukje | 8/10 | 5196 days | 17% |
| Stephanie | 10/10 | 5208 days | 19% |
| Carla | 8/10 | 5208 days | 17% |
| Melissa Steedman | 7/10 | 5235 days | 16% |
| Vanessa Brennan | 5/10 | 5235 days | 13% |
| Maria | 8/10 | 5239 days | 17% |
| Gerber Liselotte | 7/10 | 5270 days | 16% |
| Manuel | 5/10 | 5285 days | 13% |
| Tom Clements | 6/10 | 5286 days | 14% |
| Sally Walker | 9/10 | 5313 days | 19% |
| Bridgy | 10/10 | 5486 days | 19% |
| andrew julie | 8/10 | 5520 days | 17% |
| Bas Marieke | 8/10 | 5537 days | 17% |
| Richhouse | 8/10 | 5542 days | 17% |
| Dennis | 7/10 | 5543 days | 16% |
| Rietveld | 6/10 | 5554 days | 14% |
| Susanne | 5/10 | 5559 days | 13% |
| Lucy | 7/10 | 5559 days | 16% |
| Ralph | 7/10 | 5561 days | 16% |
| Nissa | 7/10 | 5561 days | 16% |
| Ash Sturm | 6/10 | 5678 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 Hells Gate and Wai Ora Spa experience has plenty of reviews and does not meet the criteria for any adjustment.
Recent Reviews Adjustment
-2.72% Adjustment
There may be an adjustment if this experience hasn't received any reviews within the last 95 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 | -2.67% |
| 198 | -2.69% |
| 199 | -2.70% |
| 200 | -2.72% |
| 201 | -2.73% |
| 202 | -2.74% |
| 203 | -2.76% |
| … | … |
Final Ranking Score
67%
The final ranking score once adjustments and rounding has been applied. This value is cached and recalculated each day. Therefore it may not be precisely accurate based on the other values presented.
If you have any questions or comments about our ranking score calculation please get in touch at info@rankers.co.nz.