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 | 2631 days | 54% |
| Inez Cavallaro | 6/10 | 2692 days | 100% |
| John Farley | 10/10 | 3293 days | 74% |
| Frank Fabian | 8/10 | 3344 days | 69% |
| Les Hendy | 8/10 | 3370 days | 68% |
| Lea Celerier | 8/10 | 3371 days | 67% |
| Jane Scott | 9/10 | 3422 days | 65% |
| Michelle Smit | 8/10 | 3484 days | 60% |
| Jan Berendsen | 5/10 | 3579 days | 41% |
| Chandra Macraigne | 6/10 | 3614 days | 44% |
| Nanna Torp | 3/10 | 3616 days | 27% |
| Karel | 7/10 | 4353 days | 0% |
| Dick Kooij | 7/10 | 4774 days | 32% |
| Huw Davies | 8/10 | 5042 days | 33% |
| Goran Backlund | 7/10 | 5052 days | 32% |
| Marc Schmiedily | 3/10 | 5053 days | 18% |
| Martin Beuker | 8/10 | 5073 days | 33% |
| Richard Harvey | 8/10 | 5076 days | 33% |
| Mark Bogton | 5/10 | 5076 days | 26% |
| Thomas | 5/10 | 5078 days | 26% |
| Kimberley Mills | 8/10 | 5083 days | 33% |
| Scott Simpson | 5/10 | 5084 days | 26% |
| Luis Valenzuela | 5/10 | 5089 days | 26% |
| Petra | 8/10 | 5091 days | 33% |
| David Blundell | 7/10 | 5091 days | 32% |
| Lucie Rutherfurd | 9/10 | 5094 days | 34% |
| Peter W. | 3/10 | 5158 days | 18% |
| Steve Neilson | 8/10 | 5165 days | 33% |
| Erik Folkersen | 4/10 | 5172 days | 22% |
| Mark de Boer | 8/10 | 5178 days | 33% |
| Tina | 9/10 | 5188 days | 34% |
| Jacquimd13 | 10/10 | 5311 days | 34% |
| Natascha Rachel | 7/10 | 5378 days | 32% |
| A Jones | 9/10 | 5405 days | 34% |
| Walker | 5/10 | 5405 days | 26% |
| Lindsey Clough | 2/10 | 5411 days | 15% |
| Natalie Maguire | 5/10 | 5416 days | 26% |
| Andreas Rath | 6/10 | 5418 days | 29% |
| Peter & Angela Brown | 10/10 | 5423 days | 34% |
| Chris Ashton | 7/10 | 5427 days | 32% |
| Kees Stigter | 7/10 | 5429 days | 32% |
| Diete Rokosch | 9/10 | 5434 days | 34% |
| Brian | 10/10 | 5436 days | 34% |
| Ronald Lippett | 8/10 | 5438 days | 33% |
| Ines | 8/10 | 5448 days | 33% |
| Julian Seizinger | 2/10 | 5448 days | 15% |
| Ann Thompson | 9/10 | 5449 days | 34% |
| Luise Jaeger | 10/10 | 5451 days | 34% |
| Eva Stauderova | 6/10 | 5452 days | 29% |
| Marianne Astorp | 8/10 | 5452 days | 33% |
| Henrik Petersen | 7/10 | 5454 days | 32% |
| Michael Eck | 8/10 | 5454 days | 33% |
| Lili | 8/10 | 5454 days | 33% |
| Florian | 7/10 | 5454 days | 32% |
| willsworthy | 5/10 | 5553 days | 26% |
| craigy | 5/10 | 5645 days | 26% |
| BigSis | 7/10 | 5645 days | 32% |
| Russ Turner | 2/10 | 5784 days | 15% |
| Andy | 6/10 | 5788 days | 29% |
| Michael Egli | 9/10 | 5789 days | 34% |
| Alan & Lorna | 3/10 | 5791 days | 18% |
| Venot | 7/10 | 5801 days | 32% |
| Roger Trusedale | 5/10 | 5808 days | 26% |
| David Rich | 6/10 | 5811 days | 29% |
| Mathias Skov | 4/10 | 5812 days | 22% |
| Nikki Wood | 6/10 | 5820 days | 29% |
| Mike Kirchner | 2/10 | 5822 days | 15% |
| Wolfgang G | 10/10 | 5832 days | 34% |
| Bo Moenstead | 8/10 | 5835 days | 33% |
| cees juffermans | 8/10 | 5839 days | 33% |
| Camenzind | 7/10 | 5846 days | 32% |
| Angela Stringer | 4/10 | 5857 days | 22% |
| blokzyl | 8/10 | 5877 days | 33% |
| aages | 9/10 | 5881 days | 34% |
| Emma Coltman | 5/10 | 5890 days | 26% |
| Helen Pet | 9/10 | 5896 days | 34% |
| nancyburns | 7/10 | 5918 days | 32% |
| Von | 5/10 | 5918 days | 26% |
| rita | 7/10 | 5997 days | 32% |
| Jess Thompson | 10/10 | 6010 days | 34% |
| Boxa Smith | 10/10 | 6010 days | 34% |
| LowerD | 9/10 | 6126 days | 34% |
| Sofie | 8/10 | 6132 days | 33% |
| Arjan Muis | 7/10 | 6134 days | 32% |
| Marion | 10/10 | 6136 days | 34% |
| Kim | 6/10 | 6136 days | 29% |
| MichaelS1 | 3/10 | 6148 days | 18% |
| ClodaghM | 8/10 | 6149 days | 33% |
| Andrew Wilson | 9/10 | 6149 days | 34% |
| FiensG | 8/10 | 6151 days | 33% |
| Joel | 7/10 | 6152 days | 32% |
| Robert | 4/10 | 6156 days | 22% |
| Chris | 8/10 | 6156 days | 33% |
| JuliaG1 | 7/10 | 6165 days | 32% |
| DavidMurray | 7/10 | 6166 days | 32% |
| AndrewF78 | 6/10 | 6168 days | 29% |
| Sarah | 8/10 | 6169 days | 33% |
| Carmel | 7/10 | 6173 days | 32% |
| marcusr | 7/10 | 6174 days | 32% |
| BethanD | 9/10 | 6179 days | 34% |
| ClaudiaK | 1/10 | 6181 days | 13% |
| Miguel | 3/10 | 6183 days | 18% |
| Ko | 8/10 | 6197 days | 33% |
| Nienhaus | 7/10 | 6199 days | 32% |
| Kern | 3/10 | 6217 days | 18% |
| Stephanie | 9/10 | 6232 days | 34% |
| Miha | 10/10 | 6237 days | 34% |
| Jacinta | 3/10 | 6263 days | 18% |
| Lara | 7/10 | 6310 days | 32% |
| Katie | 7/10 | 6328 days | 32% |
| Daniela Bell | 10/10 | 6339 days | 34% |
| Jenny | 7/10 | 6343 days | 32% |
| maria d | 10/10 | 6375 days | 34% |
| fgregory | 3/10 | 6395 days | 18% |
| woodolly | 3/10 | 6476 days | 18% |
| Christian | 6/10 | 6519 days | 29% |
| Alexandra Vogeli | 8/10 | 6519 days | 33% |
| Richard Steward | 9/10 | 6529 days | 34% |
| boukje | 8/10 | 6533 days | 33% |
| Stephanie | 10/10 | 6544 days | 34% |
| Carla | 8/10 | 6544 days | 33% |
| Melissa Steedman | 7/10 | 6571 days | 32% |
| Vanessa Brennan | 5/10 | 6571 days | 26% |
| Maria | 8/10 | 6575 days | 33% |
| Gerber Liselotte | 7/10 | 6606 days | 32% |
| Manuel | 5/10 | 6621 days | 26% |
| Tom Clements | 6/10 | 6622 days | 29% |
| Sally Walker | 9/10 | 6649 days | 34% |
| Bridgy | 10/10 | 6822 days | 34% |
| andrew julie | 8/10 | 6856 days | 33% |
| Bas Marieke | 8/10 | 6873 days | 33% |
| Richhouse | 8/10 | 6878 days | 33% |
| Dennis | 7/10 | 6879 days | 32% |
| Rietveld | 6/10 | 6890 days | 29% |
| Susanne | 5/10 | 6895 days | 26% |
| Lucy | 7/10 | 6895 days | 32% |
| Ralph | 7/10 | 6897 days | 32% |
| Nissa | 7/10 | 6897 days | 32% |
| Ash Sturm | 6/10 | 7014 days | 29% |
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 45 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 | -4.12% |
| 203 | -4.14% |
| … | … |
Balancing Adjustment
8.32% 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.