Kia ora, 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 | 2231 days | 54% |
| Inez Cavallaro | 6/10 | 2292 days | 100% |
| John Farley | 10/10 | 2893 days | 83% |
| Frank Fabian | 8/10 | 2944 days | 78% |
| Les Hendy | 8/10 | 2970 days | 77% |
| Lea Celerier | 8/10 | 2971 days | 77% |
| Jane Scott | 9/10 | 3021 days | 75% |
| Michelle Smit | 8/10 | 3083 days | 71% |
| Jan Berendsen | 5/10 | 3179 days | 51% |
| Chandra Macraigne | 6/10 | 3214 days | 56% |
| Nanna Torp | 3/10 | 3216 days | 35% |
| Karel | 7/10 | 3953 days | 22% |
| Dick Kooij | 7/10 | 4374 days | 0% |
| Huw Davies | 8/10 | 4642 days | 28% |
| Goran Backlund | 7/10 | 4652 days | 26% |
| Marc Schmiedily | 3/10 | 4653 days | 15% |
| Martin Beuker | 8/10 | 4673 days | 28% |
| Richard Harvey | 8/10 | 4676 days | 28% |
| Mark Bogton | 5/10 | 4676 days | 21% |
| Thomas | 5/10 | 4678 days | 21% |
| Kimberley Mills | 8/10 | 4683 days | 28% |
| Scott Simpson | 5/10 | 4684 days | 21% |
| Luis Valenzuela | 5/10 | 4689 days | 21% |
| Petra | 8/10 | 4691 days | 28% |
| David Blundell | 7/10 | 4691 days | 26% |
| Lucie Rutherfurd | 9/10 | 4694 days | 28% |
| Peter W. | 3/10 | 4758 days | 15% |
| Steve Neilson | 8/10 | 4765 days | 28% |
| Erik Folkersen | 4/10 | 4772 days | 18% |
| Mark de Boer | 8/10 | 4778 days | 28% |
| Tina | 9/10 | 4788 days | 28% |
| Jacquimd13 | 10/10 | 4911 days | 28% |
| Natascha Rachel | 7/10 | 4978 days | 26% |
| A Jones | 9/10 | 5005 days | 28% |
| Walker | 5/10 | 5005 days | 21% |
| Lindsey Clough | 2/10 | 5011 days | 13% |
| Natalie Maguire | 5/10 | 5016 days | 21% |
| Andreas Rath | 6/10 | 5018 days | 24% |
| Peter & Angela Brown | 10/10 | 5023 days | 28% |
| Chris Ashton | 7/10 | 5027 days | 26% |
| Kees Stigter | 7/10 | 5029 days | 26% |
| Diete Rokosch | 9/10 | 5034 days | 28% |
| Brian | 10/10 | 5036 days | 28% |
| Ronald Lippett | 8/10 | 5038 days | 28% |
| Ines | 8/10 | 5048 days | 28% |
| Julian Seizinger | 2/10 | 5048 days | 13% |
| Ann Thompson | 9/10 | 5049 days | 28% |
| Luise Jaeger | 10/10 | 5051 days | 28% |
| Eva Stauderova | 6/10 | 5052 days | 24% |
| Marianne Astorp | 8/10 | 5052 days | 28% |
| Henrik Petersen | 7/10 | 5054 days | 26% |
| Michael Eck | 8/10 | 5054 days | 28% |
| Lili | 8/10 | 5054 days | 28% |
| Florian | 7/10 | 5054 days | 26% |
| willsworthy | 5/10 | 5153 days | 21% |
| craigy | 5/10 | 5245 days | 21% |
| BigSis | 7/10 | 5245 days | 26% |
| Russ Turner | 2/10 | 5384 days | 13% |
| Andy | 6/10 | 5388 days | 24% |
| Michael Egli | 9/10 | 5389 days | 28% |
| Alan & Lorna | 3/10 | 5391 days | 15% |
| Venot | 7/10 | 5401 days | 26% |
| Roger Trusedale | 5/10 | 5408 days | 21% |
| David Rich | 6/10 | 5411 days | 24% |
| Mathias Skov | 4/10 | 5412 days | 18% |
| Nikki Wood | 6/10 | 5420 days | 24% |
| Mike Kirchner | 2/10 | 5422 days | 13% |
| Wolfgang G | 10/10 | 5432 days | 28% |
| Bo Moenstead | 8/10 | 5435 days | 28% |
| cees juffermans | 8/10 | 5439 days | 28% |
| Camenzind | 7/10 | 5446 days | 26% |
| Angela Stringer | 4/10 | 5457 days | 18% |
| blokzyl | 8/10 | 5477 days | 28% |
| aages | 9/10 | 5481 days | 28% |
| Emma Coltman | 5/10 | 5490 days | 21% |
| Helen Pet | 9/10 | 5496 days | 28% |
| nancyburns | 7/10 | 5518 days | 26% |
| Von | 5/10 | 5518 days | 21% |
| rita | 7/10 | 5597 days | 26% |
| Jess Thompson | 10/10 | 5610 days | 28% |
| Boxa Smith | 10/10 | 5610 days | 28% |
| LowerD | 9/10 | 5726 days | 28% |
| Sofie | 8/10 | 5732 days | 28% |
| Arjan Muis | 7/10 | 5734 days | 26% |
| Marion | 10/10 | 5736 days | 28% |
| Kim | 6/10 | 5736 days | 24% |
| MichaelS1 | 3/10 | 5748 days | 15% |
| ClodaghM | 8/10 | 5749 days | 28% |
| Andrew Wilson | 9/10 | 5749 days | 28% |
| FiensG | 8/10 | 5751 days | 28% |
| Joel | 7/10 | 5752 days | 26% |
| Robert | 4/10 | 5755 days | 18% |
| Chris | 8/10 | 5756 days | 28% |
| JuliaG1 | 7/10 | 5765 days | 26% |
| DavidMurray | 7/10 | 5766 days | 26% |
| AndrewF78 | 6/10 | 5768 days | 24% |
| Sarah | 8/10 | 5768 days | 28% |
| Carmel | 7/10 | 5772 days | 26% |
| marcusr | 7/10 | 5773 days | 26% |
| BethanD | 9/10 | 5779 days | 28% |
| ClaudiaK | 1/10 | 5781 days | 11% |
| Miguel | 3/10 | 5782 days | 15% |
| Ko | 8/10 | 5796 days | 28% |
| Nienhaus | 7/10 | 5799 days | 26% |
| Kern | 3/10 | 5816 days | 15% |
| Stephanie | 9/10 | 5832 days | 28% |
| Miha | 10/10 | 5836 days | 28% |
| Jacinta | 3/10 | 5862 days | 15% |
| Lara | 7/10 | 5909 days | 26% |
| Katie | 7/10 | 5927 days | 26% |
| Daniela Bell | 10/10 | 5938 days | 28% |
| Jenny | 7/10 | 5942 days | 26% |
| maria d | 10/10 | 5974 days | 28% |
| fgregory | 3/10 | 5994 days | 15% |
| woodolly | 3/10 | 6075 days | 15% |
| Christian | 6/10 | 6119 days | 24% |
| Alexandra Vogeli | 8/10 | 6119 days | 28% |
| Richard Steward | 9/10 | 6129 days | 28% |
| boukje | 8/10 | 6132 days | 28% |
| Stephanie | 10/10 | 6144 days | 28% |
| Carla | 8/10 | 6144 days | 28% |
| Melissa Steedman | 7/10 | 6171 days | 26% |
| Vanessa Brennan | 5/10 | 6171 days | 21% |
| Maria | 8/10 | 6175 days | 28% |
| Gerber Liselotte | 7/10 | 6206 days | 26% |
| Manuel | 5/10 | 6221 days | 21% |
| Tom Clements | 6/10 | 6222 days | 24% |
| Sally Walker | 9/10 | 6249 days | 28% |
| Bridgy | 10/10 | 6422 days | 28% |
| andrew julie | 8/10 | 6456 days | 28% |
| Bas Marieke | 8/10 | 6473 days | 28% |
| Richhouse | 8/10 | 6478 days | 28% |
| Dennis | 7/10 | 6479 days | 26% |
| Rietveld | 6/10 | 6490 days | 24% |
| Susanne | 5/10 | 6495 days | 21% |
| Lucy | 7/10 | 6495 days | 26% |
| Ralph | 7/10 | 6497 days | 26% |
| Nissa | 7/10 | 6497 days | 26% |
| Ash Sturm | 6/10 | 6614 days | 24% |
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
8.33% 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.