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
71.83%
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 | 2247 days | 48% |
| Inez Cavallaro | 6/10 | 2308 days | 100% |
| John Farley | 10/10 | 2909 days | 80% |
| Frank Fabian | 8/10 | 2960 days | 75% |
| Les Hendy | 8/10 | 2986 days | 73% |
| Lea Celerier | 8/10 | 2987 days | 73% |
| Jane Scott | 9/10 | 3038 days | 71% |
| Michelle Smit | 8/10 | 3100 days | 66% |
| Jan Berendsen | 5/10 | 3195 days | 44% |
| Chandra Macraigne | 6/10 | 3230 days | 50% |
| Nanna Torp | 3/10 | 3232 days | 26% |
| Karel | 7/10 | 3969 days | 11% |
| Dick Kooij | 7/10 | 4390 days | 17% |
| Huw Davies | 8/10 | 4658 days | 19% |
| Goran Backlund | 7/10 | 4668 days | 17% |
| Marc Schmiedily | 3/10 | 4669 days | 4% |
| Martin Beuker | 8/10 | 4689 days | 19% |
| Richard Harvey | 8/10 | 4692 days | 19% |
| Mark Bogton | 5/10 | 4692 days | 12% |
| Thomas | 5/10 | 4694 days | 12% |
| Kimberley Mills | 8/10 | 4699 days | 19% |
| Scott Simpson | 5/10 | 4700 days | 12% |
| Luis Valenzuela | 5/10 | 4705 days | 12% |
| Petra | 8/10 | 4707 days | 19% |
| David Blundell | 7/10 | 4707 days | 17% |
| Lucie Rutherfurd | 9/10 | 4710 days | 19% |
| Peter W. | 3/10 | 4774 days | 4% |
| Steve Neilson | 8/10 | 4781 days | 19% |
| Erik Folkersen | 4/10 | 4788 days | 8% |
| Mark de Boer | 8/10 | 4794 days | 19% |
| Tina | 9/10 | 4804 days | 19% |
| Jacquimd13 | 10/10 | 4927 days | 19% |
| Natascha Rachel | 7/10 | 4994 days | 17% |
| A Jones | 9/10 | 5021 days | 19% |
| Walker | 5/10 | 5021 days | 12% |
| Lindsey Clough | 2/10 | 5027 days | 2% |
| Natalie Maguire | 5/10 | 5032 days | 12% |
| Andreas Rath | 6/10 | 5034 days | 15% |
| Peter & Angela Brown | 10/10 | 5039 days | 19% |
| Chris Ashton | 7/10 | 5043 days | 17% |
| Kees Stigter | 7/10 | 5045 days | 17% |
| Diete Rokosch | 9/10 | 5050 days | 19% |
| Brian | 10/10 | 5052 days | 19% |
| Ronald Lippett | 8/10 | 5054 days | 19% |
| Ines | 8/10 | 5064 days | 19% |
| Julian Seizinger | 2/10 | 5064 days | 2% |
| Ann Thompson | 9/10 | 5065 days | 19% |
| Luise Jaeger | 10/10 | 5067 days | 19% |
| Eva Stauderova | 6/10 | 5068 days | 15% |
| Marianne Astorp | 8/10 | 5068 days | 19% |
| Henrik Petersen | 7/10 | 5070 days | 17% |
| Michael Eck | 8/10 | 5070 days | 19% |
| Lili | 8/10 | 5070 days | 19% |
| Florian | 7/10 | 5070 days | 17% |
| willsworthy | 5/10 | 5169 days | 12% |
| craigy | 5/10 | 5261 days | 12% |
| BigSis | 7/10 | 5261 days | 17% |
| Russ Turner | 2/10 | 5400 days | 2% |
| Andy | 6/10 | 5404 days | 15% |
| Michael Egli | 9/10 | 5405 days | 19% |
| Alan & Lorna | 3/10 | 5407 days | 4% |
| Venot | 7/10 | 5417 days | 17% |
| Roger Trusedale | 5/10 | 5424 days | 12% |
| David Rich | 6/10 | 5427 days | 15% |
| Mathias Skov | 4/10 | 5428 days | 8% |
| Nikki Wood | 6/10 | 5436 days | 15% |
| Mike Kirchner | 2/10 | 5438 days | 2% |
| Wolfgang G | 10/10 | 5448 days | 19% |
| Bo Moenstead | 8/10 | 5451 days | 19% |
| cees juffermans | 8/10 | 5455 days | 19% |
| Camenzind | 7/10 | 5462 days | 17% |
| Angela Stringer | 4/10 | 5473 days | 8% |
| blokzyl | 8/10 | 5493 days | 19% |
| aages | 9/10 | 5497 days | 19% |
| Emma Coltman | 5/10 | 5506 days | 12% |
| Helen Pet | 9/10 | 5512 days | 19% |
| nancyburns | 7/10 | 5534 days | 17% |
| Von | 5/10 | 5534 days | 12% |
| rita | 7/10 | 5613 days | 17% |
| Jess Thompson | 10/10 | 5626 days | 19% |
| Boxa Smith | 10/10 | 5626 days | 19% |
| LowerD | 9/10 | 5742 days | 19% |
| Sofie | 8/10 | 5748 days | 19% |
| Arjan Muis | 7/10 | 5750 days | 17% |
| Marion | 10/10 | 5753 days | 19% |
| Kim | 6/10 | 5753 days | 15% |
| MichaelS1 | 3/10 | 5764 days | 4% |
| ClodaghM | 8/10 | 5765 days | 19% |
| Andrew Wilson | 9/10 | 5765 days | 19% |
| FiensG | 8/10 | 5767 days | 19% |
| Joel | 7/10 | 5768 days | 17% |
| Robert | 4/10 | 5772 days | 8% |
| Chris | 8/10 | 5773 days | 19% |
| JuliaG1 | 7/10 | 5781 days | 17% |
| DavidMurray | 7/10 | 5782 days | 17% |
| AndrewF78 | 6/10 | 5784 days | 15% |
| Sarah | 8/10 | 5785 days | 19% |
| Carmel | 7/10 | 5789 days | 17% |
| marcusr | 7/10 | 5790 days | 17% |
| BethanD | 9/10 | 5795 days | 19% |
| ClaudiaK | 1/10 | 5797 days | 0% |
| Miguel | 3/10 | 5799 days | 4% |
| Ko | 8/10 | 5813 days | 19% |
| Nienhaus | 7/10 | 5816 days | 17% |
| Kern | 3/10 | 5833 days | 4% |
| Stephanie | 9/10 | 5848 days | 19% |
| Miha | 10/10 | 5853 days | 19% |
| Jacinta | 3/10 | 5879 days | 4% |
| Lara | 7/10 | 5926 days | 17% |
| Katie | 7/10 | 5944 days | 17% |
| Daniela Bell | 10/10 | 5955 days | 19% |
| Jenny | 7/10 | 5959 days | 17% |
| maria d | 10/10 | 5991 days | 19% |
| fgregory | 3/10 | 6011 days | 4% |
| woodolly | 3/10 | 6092 days | 4% |
| Christian | 6/10 | 6135 days | 15% |
| Alexandra Vogeli | 8/10 | 6135 days | 19% |
| Richard Steward | 9/10 | 6145 days | 19% |
| boukje | 8/10 | 6149 days | 19% |
| Stephanie | 10/10 | 6160 days | 19% |
| Carla | 8/10 | 6160 days | 19% |
| Melissa Steedman | 7/10 | 6187 days | 17% |
| Vanessa Brennan | 5/10 | 6187 days | 12% |
| Maria | 8/10 | 6191 days | 19% |
| Gerber Liselotte | 7/10 | 6222 days | 17% |
| Manuel | 5/10 | 6237 days | 12% |
| Tom Clements | 6/10 | 6238 days | 15% |
| Sally Walker | 9/10 | 6265 days | 19% |
| Bridgy | 10/10 | 6438 days | 19% |
| andrew julie | 8/10 | 6472 days | 19% |
| Bas Marieke | 8/10 | 6489 days | 19% |
| Richhouse | 8/10 | 6494 days | 19% |
| Dennis | 7/10 | 6495 days | 17% |
| Rietveld | 6/10 | 6506 days | 15% |
| Susanne | 5/10 | 6511 days | 12% |
| Lucy | 7/10 | 6511 days | 17% |
| Ralph | 7/10 | 6513 days | 17% |
| Nissa | 7/10 | 6513 days | 17% |
| Ash Sturm | 6/10 | 6630 days | 15% |
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
-4.02% Adjustment
There may be an adjustment if this experience hasn't received any reviews within the last 41 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 | -3.96% |
| 198 | -3.98% |
| 199 | -4.00% |
| 200 | -4.02% |
| 201 | -4.04% |
| 202 | -4.06% |
| 203 | -4.08% |
| … | … |
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.