Hey, 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 | 2780 days | 47% |
| Inez Cavallaro | 6/10 | 2841 days | 100% |
| John Farley | 10/10 | 3442 days | 65% |
| Frank Fabian | 8/10 | 3493 days | 59% |
| Les Hendy | 8/10 | 3519 days | 57% |
| Lea Celerier | 8/10 | 3520 days | 57% |
| Jane Scott | 9/10 | 3571 days | 53% |
| Michelle Smit | 8/10 | 3633 days | 47% |
| Jan Berendsen | 5/10 | 3728 days | 26% |
| Chandra Macraigne | 6/10 | 3763 days | 29% |
| Nanna Torp | 3/10 | 3765 days | 11% |
| Karel | 7/10 | 4502 days | 24% |
| Dick Kooij | 7/10 | 4923 days | 24% |
| Huw Davies | 8/10 | 5191 days | 26% |
| Goran Backlund | 7/10 | 5201 days | 24% |
| Marc Schmiedily | 3/10 | 5202 days | 6% |
| Martin Beuker | 8/10 | 5222 days | 26% |
| Richard Harvey | 8/10 | 5225 days | 26% |
| Mark Bogton | 5/10 | 5225 days | 16% |
| Thomas | 5/10 | 5227 days | 16% |
| Kimberley Mills | 8/10 | 5232 days | 26% |
| Scott Simpson | 5/10 | 5233 days | 16% |
| Luis Valenzuela | 5/10 | 5238 days | 16% |
| Petra | 8/10 | 5240 days | 26% |
| David Blundell | 7/10 | 5240 days | 24% |
| Lucie Rutherfurd | 9/10 | 5243 days | 27% |
| Peter W. | 3/10 | 5307 days | 6% |
| Steve Neilson | 8/10 | 5314 days | 26% |
| Erik Folkersen | 4/10 | 5321 days | 11% |
| Mark de Boer | 8/10 | 5327 days | 26% |
| Tina | 9/10 | 5337 days | 27% |
| Jacquimd13 | 10/10 | 5460 days | 27% |
| Natascha Rachel | 7/10 | 5527 days | 24% |
| A Jones | 9/10 | 5554 days | 27% |
| Walker | 5/10 | 5554 days | 16% |
| Lindsey Clough | 2/10 | 5560 days | 2% |
| Natalie Maguire | 5/10 | 5565 days | 16% |
| Andreas Rath | 6/10 | 5567 days | 21% |
| Peter & Angela Brown | 10/10 | 5572 days | 27% |
| Chris Ashton | 7/10 | 5576 days | 24% |
| Kees Stigter | 7/10 | 5578 days | 24% |
| Diete Rokosch | 9/10 | 5583 days | 27% |
| Brian | 10/10 | 5585 days | 27% |
| Ronald Lippett | 8/10 | 5587 days | 26% |
| Ines | 8/10 | 5597 days | 26% |
| Julian Seizinger | 2/10 | 5597 days | 2% |
| Ann Thompson | 9/10 | 5598 days | 27% |
| Luise Jaeger | 10/10 | 5600 days | 27% |
| Eva Stauderova | 6/10 | 5601 days | 21% |
| Marianne Astorp | 8/10 | 5601 days | 26% |
| Henrik Petersen | 7/10 | 5603 days | 24% |
| Michael Eck | 8/10 | 5603 days | 26% |
| Lili | 8/10 | 5603 days | 26% |
| Florian | 7/10 | 5603 days | 24% |
| willsworthy | 5/10 | 5702 days | 16% |
| craigy | 5/10 | 5794 days | 16% |
| BigSis | 7/10 | 5794 days | 24% |
| Russ Turner | 2/10 | 5933 days | 2% |
| Andy | 6/10 | 5937 days | 21% |
| Michael Egli | 9/10 | 5938 days | 27% |
| Alan & Lorna | 3/10 | 5940 days | 6% |
| Venot | 7/10 | 5950 days | 24% |
| Roger Trusedale | 5/10 | 5957 days | 16% |
| David Rich | 6/10 | 5960 days | 21% |
| Mathias Skov | 4/10 | 5961 days | 11% |
| Nikki Wood | 6/10 | 5969 days | 21% |
| Mike Kirchner | 2/10 | 5971 days | 2% |
| Wolfgang G | 10/10 | 5981 days | 27% |
| Bo Moenstead | 8/10 | 5984 days | 26% |
| cees juffermans | 8/10 | 5988 days | 26% |
| Camenzind | 7/10 | 5995 days | 24% |
| Angela Stringer | 4/10 | 6006 days | 11% |
| blokzyl | 8/10 | 6026 days | 26% |
| aages | 9/10 | 6030 days | 27% |
| Emma Coltman | 5/10 | 6039 days | 16% |
| Helen Pet | 9/10 | 6045 days | 27% |
| nancyburns | 7/10 | 6067 days | 24% |
| Von | 5/10 | 6067 days | 16% |
| rita | 7/10 | 6146 days | 24% |
| Jess Thompson | 10/10 | 6159 days | 27% |
| Boxa Smith | 10/10 | 6159 days | 27% |
| LowerD | 9/10 | 6275 days | 27% |
| Sofie | 8/10 | 6281 days | 26% |
| Arjan Muis | 7/10 | 6283 days | 24% |
| Marion | 10/10 | 6286 days | 27% |
| Kim | 6/10 | 6286 days | 21% |
| MichaelS1 | 3/10 | 6297 days | 6% |
| ClodaghM | 8/10 | 6298 days | 26% |
| Andrew Wilson | 9/10 | 6298 days | 27% |
| FiensG | 8/10 | 6300 days | 26% |
| Joel | 7/10 | 6301 days | 24% |
| Robert | 4/10 | 6305 days | 11% |
| Chris | 8/10 | 6305 days | 26% |
| JuliaG1 | 7/10 | 6314 days | 24% |
| DavidMurray | 7/10 | 6315 days | 24% |
| AndrewF78 | 6/10 | 6317 days | 21% |
| Sarah | 8/10 | 6318 days | 26% |
| Carmel | 7/10 | 6322 days | 24% |
| marcusr | 7/10 | 6323 days | 24% |
| BethanD | 9/10 | 6328 days | 27% |
| ClaudiaK | 1/10 | 6330 days | 0% |
| Miguel | 3/10 | 6332 days | 6% |
| Ko | 8/10 | 6346 days | 26% |
| Nienhaus | 7/10 | 6348 days | 24% |
| Kern | 3/10 | 6366 days | 6% |
| Stephanie | 9/10 | 6381 days | 27% |
| Miha | 10/10 | 6386 days | 27% |
| Jacinta | 3/10 | 6412 days | 6% |
| Lara | 7/10 | 6459 days | 24% |
| Katie | 7/10 | 6477 days | 24% |
| Daniela Bell | 10/10 | 6488 days | 27% |
| Jenny | 7/10 | 6492 days | 24% |
| maria d | 10/10 | 6524 days | 27% |
| fgregory | 3/10 | 6544 days | 6% |
| woodolly | 3/10 | 6625 days | 6% |
| Christian | 6/10 | 6668 days | 21% |
| Alexandra Vogeli | 8/10 | 6668 days | 26% |
| Richard Steward | 9/10 | 6678 days | 27% |
| boukje | 8/10 | 6682 days | 26% |
| Stephanie | 10/10 | 6693 days | 27% |
| Carla | 8/10 | 6693 days | 26% |
| Melissa Steedman | 7/10 | 6720 days | 24% |
| Vanessa Brennan | 5/10 | 6720 days | 16% |
| Maria | 8/10 | 6724 days | 26% |
| Gerber Liselotte | 7/10 | 6755 days | 24% |
| Manuel | 5/10 | 6770 days | 16% |
| Tom Clements | 6/10 | 6771 days | 21% |
| Sally Walker | 9/10 | 6798 days | 27% |
| Bridgy | 10/10 | 6971 days | 27% |
| andrew julie | 8/10 | 7005 days | 26% |
| Bas Marieke | 8/10 | 7022 days | 26% |
| Richhouse | 8/10 | 7027 days | 26% |
| Dennis | 7/10 | 7028 days | 24% |
| Rietveld | 6/10 | 7039 days | 21% |
| Susanne | 5/10 | 7044 days | 16% |
| Lucy | 7/10 | 7044 days | 24% |
| Ralph | 7/10 | 7046 days | 24% |
| Nissa | 7/10 | 7046 days | 24% |
| Ash Sturm | 6/10 | 7163 days | 21% |
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
-2.26% Adjustment
There may be an adjustment if this experience hasn't received any reviews within the last 114 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 | -2.23% |
| 198 | -2.24% |
| 199 | -2.25% |
| 200 | -2.26% |
| 201 | -2.27% |
| 202 | -2.29% |
| 203 | -2.30% |
| … | … |
Balancing Adjustment
7.22% 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
77%
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.