Hi, 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 | 2602 days | 53% |
| Inez Cavallaro | 6/10 | 2663 days | 100% |
| John Farley | 10/10 | 3264 days | 75% |
| Frank Fabian | 8/10 | 3315 days | 70% |
| Les Hendy | 8/10 | 3341 days | 68% |
| Lea Celerier | 8/10 | 3342 days | 68% |
| Jane Scott | 9/10 | 3393 days | 65% |
| Michelle Smit | 8/10 | 3455 days | 60% |
| Jan Berendsen | 5/10 | 3550 days | 41% |
| Chandra Macraigne | 6/10 | 3585 days | 44% |
| Nanna Torp | 3/10 | 3587 days | 27% |
| Karel | 7/10 | 4324 days | 0% |
| Dick Kooij | 7/10 | 4745 days | 30% |
| Huw Davies | 8/10 | 5013 days | 31% |
| Goran Backlund | 7/10 | 5023 days | 30% |
| Marc Schmiedily | 3/10 | 5024 days | 16% |
| Martin Beuker | 8/10 | 5044 days | 31% |
| Richard Harvey | 8/10 | 5047 days | 31% |
| Mark Bogton | 5/10 | 5047 days | 24% |
| Thomas | 5/10 | 5049 days | 24% |
| Kimberley Mills | 8/10 | 5054 days | 31% |
| Scott Simpson | 5/10 | 5055 days | 24% |
| Luis Valenzuela | 5/10 | 5060 days | 24% |
| Petra | 8/10 | 5062 days | 31% |
| David Blundell | 7/10 | 5062 days | 30% |
| Lucie Rutherfurd | 9/10 | 5065 days | 32% |
| Peter W. | 3/10 | 5129 days | 16% |
| Steve Neilson | 8/10 | 5136 days | 31% |
| Erik Folkersen | 4/10 | 5143 days | 20% |
| Mark de Boer | 8/10 | 5149 days | 31% |
| Tina | 9/10 | 5159 days | 32% |
| Jacquimd13 | 10/10 | 5282 days | 32% |
| Natascha Rachel | 7/10 | 5349 days | 30% |
| A Jones | 9/10 | 5376 days | 32% |
| Walker | 5/10 | 5376 days | 24% |
| Lindsey Clough | 2/10 | 5382 days | 13% |
| Natalie Maguire | 5/10 | 5387 days | 24% |
| Andreas Rath | 6/10 | 5389 days | 27% |
| Peter & Angela Brown | 10/10 | 5394 days | 32% |
| Chris Ashton | 7/10 | 5398 days | 30% |
| Kees Stigter | 7/10 | 5400 days | 30% |
| Diete Rokosch | 9/10 | 5405 days | 32% |
| Brian | 10/10 | 5407 days | 32% |
| Ronald Lippett | 8/10 | 5409 days | 31% |
| Ines | 8/10 | 5419 days | 31% |
| Julian Seizinger | 2/10 | 5419 days | 13% |
| Ann Thompson | 9/10 | 5420 days | 32% |
| Luise Jaeger | 10/10 | 5422 days | 32% |
| Eva Stauderova | 6/10 | 5423 days | 27% |
| Marianne Astorp | 8/10 | 5423 days | 31% |
| Henrik Petersen | 7/10 | 5425 days | 30% |
| Michael Eck | 8/10 | 5425 days | 31% |
| Lili | 8/10 | 5425 days | 31% |
| Florian | 7/10 | 5425 days | 30% |
| willsworthy | 5/10 | 5524 days | 24% |
| craigy | 5/10 | 5616 days | 24% |
| BigSis | 7/10 | 5616 days | 30% |
| Russ Turner | 2/10 | 5755 days | 13% |
| Andy | 6/10 | 5759 days | 27% |
| Michael Egli | 9/10 | 5760 days | 32% |
| Alan & Lorna | 3/10 | 5762 days | 16% |
| Venot | 7/10 | 5772 days | 30% |
| Roger Trusedale | 5/10 | 5779 days | 24% |
| David Rich | 6/10 | 5782 days | 27% |
| Mathias Skov | 4/10 | 5783 days | 20% |
| Nikki Wood | 6/10 | 5791 days | 27% |
| Mike Kirchner | 2/10 | 5793 days | 13% |
| Wolfgang G | 10/10 | 5803 days | 32% |
| Bo Moenstead | 8/10 | 5806 days | 31% |
| cees juffermans | 8/10 | 5810 days | 31% |
| Camenzind | 7/10 | 5817 days | 30% |
| Angela Stringer | 4/10 | 5828 days | 20% |
| blokzyl | 8/10 | 5848 days | 31% |
| aages | 9/10 | 5852 days | 32% |
| Emma Coltman | 5/10 | 5861 days | 24% |
| Helen Pet | 9/10 | 5867 days | 32% |
| nancyburns | 7/10 | 5889 days | 30% |
| Von | 5/10 | 5889 days | 24% |
| rita | 7/10 | 5968 days | 30% |
| Jess Thompson | 10/10 | 5981 days | 32% |
| Boxa Smith | 10/10 | 5981 days | 32% |
| LowerD | 9/10 | 6097 days | 32% |
| Sofie | 8/10 | 6103 days | 31% |
| Arjan Muis | 7/10 | 6105 days | 30% |
| Marion | 10/10 | 6107 days | 32% |
| Kim | 6/10 | 6107 days | 27% |
| MichaelS1 | 3/10 | 6119 days | 16% |
| ClodaghM | 8/10 | 6120 days | 31% |
| Andrew Wilson | 9/10 | 6120 days | 32% |
| FiensG | 8/10 | 6122 days | 31% |
| Joel | 7/10 | 6123 days | 30% |
| Robert | 4/10 | 6127 days | 20% |
| Chris | 8/10 | 6127 days | 31% |
| JuliaG1 | 7/10 | 6136 days | 30% |
| DavidMurray | 7/10 | 6137 days | 30% |
| AndrewF78 | 6/10 | 6139 days | 27% |
| Sarah | 8/10 | 6140 days | 31% |
| Carmel | 7/10 | 6144 days | 30% |
| marcusr | 7/10 | 6145 days | 30% |
| BethanD | 9/10 | 6150 days | 32% |
| ClaudiaK | 1/10 | 6152 days | 11% |
| Miguel | 3/10 | 6154 days | 16% |
| Ko | 8/10 | 6168 days | 31% |
| Nienhaus | 7/10 | 6170 days | 30% |
| Kern | 3/10 | 6188 days | 16% |
| Stephanie | 9/10 | 6203 days | 32% |
| Miha | 10/10 | 6208 days | 32% |
| Jacinta | 3/10 | 6234 days | 16% |
| Lara | 7/10 | 6281 days | 30% |
| Katie | 7/10 | 6299 days | 30% |
| Daniela Bell | 10/10 | 6310 days | 32% |
| Jenny | 7/10 | 6314 days | 30% |
| maria d | 10/10 | 6346 days | 32% |
| fgregory | 3/10 | 6366 days | 16% |
| woodolly | 3/10 | 6447 days | 16% |
| Christian | 6/10 | 6490 days | 27% |
| Alexandra Vogeli | 8/10 | 6490 days | 31% |
| Richard Steward | 9/10 | 6500 days | 32% |
| boukje | 8/10 | 6504 days | 31% |
| Stephanie | 10/10 | 6515 days | 32% |
| Carla | 8/10 | 6515 days | 31% |
| Melissa Steedman | 7/10 | 6542 days | 30% |
| Vanessa Brennan | 5/10 | 6542 days | 24% |
| Maria | 8/10 | 6546 days | 31% |
| Gerber Liselotte | 7/10 | 6577 days | 30% |
| Manuel | 5/10 | 6592 days | 24% |
| Tom Clements | 6/10 | 6593 days | 27% |
| Sally Walker | 9/10 | 6620 days | 32% |
| Bridgy | 10/10 | 6793 days | 32% |
| andrew julie | 8/10 | 6827 days | 31% |
| Bas Marieke | 8/10 | 6844 days | 31% |
| Richhouse | 8/10 | 6849 days | 31% |
| Dennis | 7/10 | 6850 days | 30% |
| Rietveld | 6/10 | 6861 days | 27% |
| Susanne | 5/10 | 6866 days | 24% |
| Lucy | 7/10 | 6866 days | 30% |
| Ralph | 7/10 | 6868 days | 30% |
| Nissa | 7/10 | 6868 days | 30% |
| Ash Sturm | 6/10 | 6985 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
-4.05% 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 | -3.99% |
| 198 | -4.01% |
| 199 | -4.03% |
| 200 | -4.05% |
| 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.